@inproceedings{10.1117/12.2652955,
author = {Awanish Pratap Singh and Madita G{\"o}b and Martin Ahrens and Tim Eixmann and Hinnerk Schulz-Hildebrandt and Gereon H{\"u}ttmann and Robert Huber and Maik Rahlves},
title = {{Synchronous high-speed OCT imaging with sensor less brushless DC motor and FDML laser in a phase-locked loop}},
volume = {12367},
booktitle = {Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVII},
editor = {Joseph A. Izatt and James G. Fujimoto},
organization = {International Society for Optics and Photonics},
publisher = {SPIE},
pages = {1236703},
abstract = {High-speed endoscopic optical coherence tomography (OCT) imaging in the MHz range has shown great potential in various medical applications ranging from cancer screening to vascular disease monitoring. High-speed imaging always suffers from non-uniform rotational distortion (NURD) due to asynchronous motor rotation with the OCT system. Several research groups have previously attempted to solve this problem, using either an expensive motor with a sensor or numerical correction after data acquisition. However, both techniques pose challenges for practical use. Therefore, in this study, we use an inexpensive sensorless brushless DC motor with a Fourier domain mode-locked (FDML) laser-based MHz OCT system and try to resolve the problem of synchronization using three different modalities, (i) Slave-mode: The FDML frequency serves as a master frequency for the motor, which is phase-locked to the FDML frequency, (ii) Master-mode: The revolution trigger obtained from the motor’s back electromotive force (BEMF) signal serves as a trigger signal for the OCT imaging system, (iii) Both: Fully synchronized setup, where the motor rotation is synchronized with the laser and the imaging system is synchronized with the motor to achieve phase-stable OCT imaging. The first case slightly fluctuates in live preview and imaging due to the absence of a revolution trigger, while the second has varying motor speeds. Therefore, we use the third case to phase-lock the motor with FDML and get a distortion-free live preview and image acquisition. Finally, we demonstrate high-speed SS-OCT structural imaging (at 3.3 MHz A-scan rates) of a finger with a 16 mm diameter probe (at 40,000 rpm).},
keywords = {Optical Coherence Tomography, Endoscopy, FDML , Closed Loop Motor Control, NURD compensation, Brushless DC Motor, Back Electromotive Force},
year = {2023},
doi = {10.1117/12.2652955},
URL = {https://doi.org/10.1117/12.2652955}
}

@article{RN5328,
   author = {Pfäffle, C;Spahr, H;Gercke, K;Puyo, L;Höhl, S;Melenberg, D;Miura, Y;Hüttmann, G and Hillmann, D},
   title = {Phase-Sensitive Measurements of Depth-Dependent Signal Transduction in the Inner Plexiform Layer},
   journal = {Frontiers in Medicine},
   volume = {9},
   ISSN = {2296-858X},
   DOI = {10.3389/fmed.2022.885187},
keywords = {optoretinography, optical coherence tomography, phase-sensitive OCT, functional imaging, inner
plexiform layer, retina},
   url = {https://www.frontiersin.org/articles/10.3389/fmed.2022.885187},
   year = {2022},
   type = {Journal Article}
}

@article{Kohlfarber2022,
   author = {Kohlfaerber, T;Pieper, M;Münter, M;Holzhausen, C;Ahrens, M;Idel, C;Bruchhage, K-L;Leichtle, A;König, P;Hüttmann, G and Schulz-Hildebrandt, H},
   title = {Dynamic microscopic optical coherence tomography to visualize the morphological and functional micro-anatomy of the airways},
   journal = {Biomedical Optics Express},
   volume = {13 (6)},
   pages = {3211-3223},
   DOI = {10.1364/BOE.456104},
  
   year = {2022},
   type = {Journal Article}
}

@article{von-der-Burchardt2022,
   author = {von der Burchard, C;Sudkamp, H;Tode, J;Ehlken, C;Purtskhvanidze, K;Moltmann, M;Heimes, B;Koch, P;Münst, M;vom Endt, M;Kepp, T;Theisen-Kunde, D;König, I;Hüttmann, G and Roider, J},
   title = {Self-Examination Low-Cost Full-Field Optical Coherence Tomography (SELFF-OCT) for neovascular age-related macular degeneration: a cross-sectional diagnostic accuracy study},
   journal = {BMJ Open},
   volume = {12},
   number = {6},
   pages = {e055082},
   DOI = {10.1136/bmjopen-2021-055082},
   url = {http://bmjopen.bmj.com/content/12/6/e055082.abstract},
   year = {2022},
   type = {Journal Article}
}

@article{Musial-2022,
   author = {Musial, G;Kohlfaerber, T;Ahrens, M;Schulz-Hildebrandt, H;Steven, P and Hüttmann, G},
   title = {Dynamic Contrast Microscopic Optical Coherence Tomography As a Novel Method for Assessing Corneal Epithelium During Exposure to Benzalkonium Chloride},
   journal = {Translational Vision Science & Technology},
keywords = {toxicity; optical coherence tomography; benzalkonium chloride},
   volume = {11(5)},

   pages = {28-28},
   ISSN = {2164-2591},
   DOI = {10.1167/tvst.11.5.28},
   url = {https://doi.org/10.1167/tvst.11.5.28},
   year = {2022},
   type = {Journal Article}
}

@inproceedings{RN5321,
   author = {Pfäffle, C;Spahr, H;Gercke, K;Burhan, S;Melenberg, D;Miura, Y;Hüttmann, G and Hillmann, D},
   title = {Phase-sensitive measurements of depth dependent signal transduction in the inner plexiform layer},
   booktitle = {SPIE BiOS},
   publisher = {SPIE},
   volume = {11623},
   url = {https://doi.org/10.1117/12.2577605},
   type = {Conference Proceedings}
}

@article{Hakert2021,
   author = {H. Hakert, M. Eibl, M. Tillich, R.Pries, G. Hüttmann, R. Brinkmann, B. Wollenberg, K-L. Bruchhage, S. Karpf and R. Huber},
   title = {Time-encoded stimulated Raman scattering microscopy of tumorous human pharynx tissue in the fingerprint region from 1500–1800  cm-1},
   journal = {Optics Letters},
   volume = {46(14)},
   number = {14},
   pages = {3456-3459},
keywords = {AG-Huber_NL, Clinical applications, Master oscillator power amplifiers, Optical coherence tomography, Raman scattering, Stimulated Raman scattering, Stimulated scattering},
   DOI = {https://doi.org/10.1364/OL.424726},
   year = {2021},
   type = {Journal Article}
}

@article{PenateMedina2021,
   author = {Peñate Medina, T;Kolb, J P;Hüttmann, G;Huber, R;Peñate Medina, O;Ha, L;Ulloa, P;Larsen, N;Ferrari, A;Rafecas, M;Ellrichmann, M;Pravdivtseva, M S.;Anikeeva, M;Humbert, J;Both, M;Hundt, J E. and Hövener, J-B},
   title = {Imaging Inflammation - From Whole Body Imaging to Cellular Resolution},
   journal = {Frontiers in immunology},
keywords = {AG-Huber, MRI, PET, SPECT, optical imaging, Optical coherence tomography (OCT), precision medicine, Two-Photon microscopy (TPM), hyperpolarization},
   volume = {12},
   pages = {692222-692222},
   ISSN = {1664-3224},
   DOI = {10.3389/fimmu.2021.692222},
   url = {https://pubmed.ncbi.nlm.nih.gov/34248987
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8264453/},
   year = {2021},
   type = {Journal Article}
}

@inproceedings{10.1117/12.2577822,

title = {Novel method to assess the impact of aging and sun exposure on skin morphology by optical coherence tomography},

author = {Felix Hilge and Michael Evers and Malte Casper and Joshua Zev Glahn and Weeranut Phothong M.D. and Garuna Kositratna M.D. and Hinnerk Schulz-Hildebrandt and Gereon H\"{u}ttmann and Dieter Manstein M.D.},

editor = {Bernard Choi and Haishan Zeng},

url = {https://doi.org/10.1117/12.2577822},

doi = {10.1117/12.2577822},

year  = {2021},

date = {2021-01-01},

booktitle = {Photonics in Dermatology and Plastic Surgery 2021},

volume = {11618},

publisher = {SPIE},

organization = {International Society for Optics and Photonics},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@article{Münter2021,
   author = {M. Münter, M. Pieper, T. Kohlfaerber, E. Bodenstorfer, M. Ahrens, C. Winter, R. Huber, P. König, G. Hüttmann and H. Schulz-Hildebrandt},
   title = {Microscopic optical coherence tomography (mOCT) at 600 kHz for 4D volumetric imaging and dynamic contrast},
   journal = {BiomedOptE},
   volume = {12(10)},
   Keywords = {CMOS cameras,Full field optical coherence tomography,High numerical aperture optics, Image processing,In vivo imaging,Medical imaging,Ag-Huber},
   pages = {6024-6039},
   DOI = {10.1364/BOE.425001},
  
   year = {2021},
   type = {Journal Article}
}

@inproceedings{10.1117/12.2575733,

title = {Endo-microscopic optical coherence tomography (emOCT) with dynamic contrast},

author = {Hinnerk Schulz-Hildebrandt and Martin Ahrens and Michael M\"{u}nter and Elisa Wilken and Tabea Kohlf\"{a}rber and Cornelia Holzhausen and Peter K\"{o}nig and Gereon H\"{u}ttmann},

editor = {Guillermo Tearney J M.D. and Thomas D Wang and Melissa J Suter},

url = {https://doi.org/10.1117/12.2575733},

doi = {10.1117/12.2575733},

year  = {2021},

date = {2021-01-01},

booktitle = {Endoscopic Microscopy XVI},

volume = {11620},

publisher = {SPIE},

organization = {International Society for Optics and Photonics},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@article{Jackle2021,
abstract = {Background: In endovascular aneuysm repair (EVAR) procedures, medical instruments are currently navigated with a two-dimensional imaging based guidance requiring X-rays and contrast agent. Methods: Novel approaches for obtaining the three-dimensional instrument positions are introduced. Firstly, a method based on fibre optical shape sensing, one electromagnetic sensor and a preoperative computed tomography (CT) scan is described. Secondly, an approach based on image processing using one 2D fluoroscopic image and a preoperative CT scan is introduced. Results: For the tracking based method, average errors from 1.81 to 3.13 mm and maximum errors from 3.21 to 5.46 mm were measured. For the image-based approach, average errors from 3.07 to 6.02 mm and maximum errors from 8.05 to 15.75 mm were measured. Conclusion: The tracking based method is promising for usage in EVAR procedures. For the image-based approach are applications in smaller vessels more suitable, since its errors increase with the vessel diameter.},
author = {J{\"{a}}ckle, Sonja and Lange, Annkristin and Garcia-Vazquez, Veronica and Eixmann, Tim and Matysiak, Florian and Sieren, Malte Maria and Horn, Marco and Schulz-Hildebrandt, Hinnerk and H{\"{u}}ttmann, Gereon and Ernst, Floris and Heldmann, Stefan and P{\"{a}}tz, Torben and Preusser, Tobias},
doi = {10.1002/rcs.2327},
file = {:Users/schulz-hildebrandt/Documents/Mendeley Desktop/J{\"{a}}ckle et al/International Journal of Medical Robotics and Computer Assisted Surgery/J{\"{a}}ckle et al. - 2021 - Instrument localisation for endovascular aneurysm repair Comparison of two methods based on tracking systems or.pdf:pdf},
issn = {1478596X},
journal = {International Journal of Medical Robotics and Computer Assisted Surgery},
keywords = {2D/3D registration,3D localisation,computer-assisted surgery,electromagnetic tracking system,endovascular procedures,fibre optical shape sensing},
number = {6},
pages = {e2327},
year = {2021},
title = {{Instrument localisation for endovascular aneurysm repair: Comparison of two methods based on tracking systems or using imaging}},
volume = {17}
}

@inproceedings{10.1117/12.2583030,
author = {Michel Wunderlich and Peter Koch and Helge Sudkamp and Michael M{\"u}nst and Malte vom Endt and Moritz Moltmann and Gereon H{\"u}ttmann},
title = {{Eye tracking with off-axis full-field OCT by local analysis of recorded interferograms}},
volume = {11623},
booktitle = {Ophthalmic Technologies XXXI},
editor = {Daniel X. Hammer and Karen M. Joos and Daniel V. Palanker},
organization = {International Society for Optics and Photonics},
publisher = {SPIE},
pages = {116231Q},
keywords = {Retinal motion tracking in Off-Axis Full-Field OCT by local analy, Michel Wunderlich, Medizinsches Laserzentrum Lübeck, motion tracking, eye tracking, off-axis full-field time-domain OCT, OCT, retina},
year = {2021},
doi = {10.1117/12.2583030},
URL = {https://doi.org/10.1117/12.2583030}
}

@inproceedings{10.1117/12.2583811,

title = {Comparison between dynamic microscopic OCT and autofluorescence multiphoton microscopy for label-free analysis of murine trachea},

author = {Tabea Kohlfaerber and Michael M\"{u}nter and Mario Pieper and Peter K\"{o}nig and Ramtin Rahmanzadeh and Gereon H\"{u}ttmann and Hinnerk Schulz-Hildebrandt},

editor = {Joseph A Izatt and James G Fujimoto},

url = {https://doi.org/10.1117/12.2583811},

doi = {10.1117/12.2583811},

year  = {2021},

date = {2021-01-01},

booktitle = {Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXV},

volume = {11630},

publisher = {SPIE},

organization = {International Society for Optics and Photonics},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@article{Cereda-2021,
   author = {Cereda, M G;Parrulli, S;Douven, Y. G. M.;Faridpooya, K;van Romunde, S;Hüttmann, G;Eixmann, T;Schulz-Hildebrandt, H;Kronreif, G;Beelen, M and de Smet, M D.},
   title = {Clinical Evaluation of an Instrument-Integrated OCT-Based Distance Sensor for Robotic Vitreoretinal Surgery},
   journal = {Ophthalmology Science},
   volume = {1(4)},
  
   pages = {100085},
   ISSN = {2666-9145},
   DOI = {https://doi.org/10.1016/j.xops.2021.100085},
  
   year = {2021},
   type = {Journal Article}
}

@article{Jaeckle2021c,
author = {J{\"{a}}ckle, Sonja and Eixmann, Tim and Matysiak, Florian and Sieren, Malte Maria and Horn, Marco and Schulz-Hildebrandt, Hinnerk and H{\"{u}}ttmann, Gereon and P{\"{a}}tz, Torben},
doi = {doi:10.1515/cdbme-2021-1004},
journal = {Current Directions in Biomedical Engineering},
year = {2021},
number = {1},
pages = {17--20},
title = {{3D Stent Graft Guidance based on Tracking Systems for Endovascular Aneurysm Repair:}},
url = {https://doi.org/10.1515/cdbme-2021-1004},
volume = {7},
}

@inproceedings{10.1117/12.2578787,

title = {Voice coil based endomicroscopic optical coherence tomography probe for in vivo mucosa examination},

author = {Martin Ahrens and Christian Idel and Peter K\"{o}nig and Gereon H\"{u}ttmann and Hinnerk Schulz-Hildebrandt},

editor = {Guillermo Tearney J M.D. and Thomas D Wang and Melissa J Suter},

url = {https://doi.org/10.1117/12.2578787},

doi = {10.1117/12.2578787},

year  = {2021},

date = {2021-01-01},

booktitle = {Endoscopic Microscopy XVI},

volume = {11620},

publisher = {SPIE},

organization = {International Society for Optics and Photonics},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@article{von-derBurchard2020,
   author = {von der Burchard, C;Moltmann, M.;Tode, J;Ehlken, C;Sudkamp, H;Theisen-Kunde, D;König, I;Hüttmann, G and Roider, J},
   title = {Self-examination low-cost full-field OCT (SELFF-OCT) for patients with various macular diseases},
   journal = {Graefe's Archive for Clinical and Experimental Ophthalmology},
   ISSN = {1435-702X},
   
   url = {https://doi.org/10.1007/s00417-020-05035-6},
   year = {2020},
   type = {Journal Article}
}

@article{Rahmanzadeh-2020,
   author = {Yao, C;Rudnitzki, F;He, Y;Zhang, Z;Hüttmann, G and Rahmanzadeh, R},
   title = {Cancer cell-specific protein delivery by optoporation with laser-irradiated gold nanorods},
   journal = {JBio},
   
   ISSN = {1864-063X},
   DOI = {10.1002/jbio.202000017},
  Year = {2020},
   type = {Journal Article}
}

@article{Matkivsky2020,
   author = {Matkivsky, V;Moiseev, A;Shilyagin, P;Rodionov, A;Spahr, H;Pfäffle, C;Hüttmann, G;Hillmann, D and Gelikonov, G},
   title = {Determination and correction of aberrations in full field optical coherence tomography using phase gradient autofocus by maximizing the likelihood function},
   journal = {Journal of Biophotonics},
   volume = {13(10)},
   pages = {e202000112},
   ISSN = {1864-063X},
   DOI = {10.1002/jbio.202000112},
   year = {2020},
   type = {Journal Article}
}

@article{Münter2020,
   author = {Münter, M;Endt, M v;Pieper, M;Casper, M;Ahrens, M;Kohlfaerber, T;Rahmanzadeh, R;König, P;Hüttmann, G and Schulz-Hildebrandt, H},
   title = {Dynamic contrast in scanning microscopic OCT},
   journal = {Optic Letters},
url = {https://arxiv.org/abs/2003.00006},
   year = {2020},
   type = {Journal Article}
}

@article{Fischer2020,
   author = {Fischer, T;Klinger, A;von Smolinski, D;Orzekowsky-Schroeder, R;Nitzsche, F;Bölke, T;Vogel, A;Hüttmann, G and Gebert, A},
   title = {High-resolution imaging of living gut mucosa: lymphocyte clusters beneath intestinal M cells are highly dynamic structures},
   journal = {Cell and Tissue Research},
   pages = {1-8},
   ISSN = {1432-0878},
   url = {https://doi.org/10.1007/s00441-020-03167-z},
   year = {2020},
   type = {Journal Article}
}

@article{schneider2020,
   author = {Schneider, H.;Ahrens, M.;Strumpski, M.;Ruger, C.;Hafer, M.;Huettmann, G.;Theisen-Kunde, D.;Schulz-Hildebrandt, H. and Haak, R.},
   title = {An Intraoral OCT Probe to Enhanced Detection of Approximal Carious Lesions and Assessment of Restorations},
   journal = {J Clin Med},
   volume = {9(10)},
   keywords = {OCT; intraoral probe; carious lesions; caries diagnosis; dental restorations},
   ISSN = {2077-0383 (Print)
2077-0383 (Linking)},
   DOI = {10.3390/jcm9103257},
   
   year = {2020},
   type = {Journal Article}
}

@article{jackle2020,
title = {Three-dimensional guidance including shape sensing of a stentgraft system for endovascular aneurysm repair},
author = {Jäckle,S; Garcia-Vazquez,V; Eixmann, T; Matysiak, F; von Haxthausen,F; Sieren; M m; Schulz-Hildebrandt, H;  H\"{u}ttmann, G; Ernst, F; Kleemann, M and P\"{a}tz, T},
url = {https://doi.org/10.1007/s11548-020-02167-2},

isbn = {1861-6429},
year = {2020},
date = {2020-04-06},
journal = {Int J  Comp Assis Radiology and Surgery},
abstract = {During endovascular aneurysm repair (EVAR) procedures, medical instruments are guided with two-dimensional (2D) fluoroscopy and conventional digital subtraction angiography. However, this requires X-ray exposure and contrast agent is used, and the depth information is missing. To overcome these drawbacks, a three-dimensional (3D) guidance approach based on tracking systems is introduced and evaluated.},
keywords = {HSH},
pubstate = {published},
tppubtype = {article}
}

@article{Schulz-Hildebrandt-2020,
   author = {Rakhymzhan, A;Reuter, L;Raspe, R;Bremer, D;Günther, R;Leben, R;Heidelin, J;Andresen, V;Cheremukhin, S;Schulz-Hildebrandt, H;Bixel, M G.;Adams, R H.;Radbruch, H;Hüttmann, G;Hauser, A E. and Niesner, R A.},
   title = {Coregistered Spectral Optical Coherence Tomography and Two-Photon Microscopy for Multimodal Near-Instantaneous Deep-Tissue Imaging},
  year = {2020},
   journal = {Cytometry Part A},
   volume = {97},
   number = {5},
   pages={515-527},
   ISSN = {1552-4922},
   DOI = {10.1002/cyto.a.24012},
   type = {Journal Article}
}

@proceedings{Horn2019b,
title = {First Steps into Catheter Guidance Including Shape Sensing for Endovascular Aneurysm Repair Procedures},
author = {Marco Horn and Sonja J\"{a}ckle and Felix von Haxthausen and Tim Eixmann and Hinnerk Schulz-Hildebrandt and Gereon H\"{u}ttmann and Juljan Bouchagiar and Florian Matysiak and Mark Kaschwich and Markus Kleemann and Floris Ernst and Ver\'{o}nica Garc\'{i}a-V\'{a}zquez and Torben P\"{a}tz},
doi = {10.1016/J.EJVS.2019.09.091},
issn = {1078-5884},
year  = {2019},
date = {2019-12-13},
journal = {European Journal of Vascular and Endovascular Surgery},
volume = {58},
number = {6},
pages = {e610--e611},
publisher = {W.B. Saunders},
keywords = {Sensing, Fiber},
pubstate = {published},
tppubtype = {proceedings}
}

@article{RN5217,
   author = {Spahr, Hendrik;Pfäffle, Clara;Burhan, Sazan;Kutzner, Lisa;Hilge, Felix;Hüttmann, Gereon and Hillmann, Dierck},
   title = {Phase-sensitive interferometry of decorrelated speckle patterns},
   journal = {Scientific Reports},
   volume = {9},
   number = {1},
   pages = {11748},
   ISSN = {2045-2322},
   DOI = {10.1038/s41598-019-47979-8},
   url = {https://doi.org/10.1038/s41598-019-47979-8},
   year = {2019},
   type = {Journal Article}
}

@article{RN5085,
   author = {Spahr, H;Pfäffle, C;Hüttmann, G and Hillmann, D},
   title = {Artifacts in speckle tracking and multi-aperture
Doppler OCT imaging of lateral motion},
   journal = {Optics letters},
   volume = {44(5)},
   pages = {1315-1318},
   DOI = {https://doi.org/10.1364/OL.44001315},
   url = {https://doi.org/10.1364/OL.44001315},
   year = {2019},
   type = {Journal Article}
}

@article{Rahmanzadeh-2019,
   author = {Rahmanzadeh, R;Rudnitzki, F and Hüttmann, G},
   title = {Two ways to inactivate the Ki-67 protein—Fragmentation by nanoparticles, crosslinking with fluorescent dyes},
   journal = {Journal of Biophotonics},
   Year = {2019},
   pages = {e201800460},
   ISSN = {1864-063X},
   DOI = {10.1002/jbio.201800460},
   url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/jbio.201800460},
   type = {Journal Article}
}

@article{Pfäffle2019,
   author = {Pfäffle, C;Spahr, H;Kutzner, L;Burhan, S;Hilge, F;Miura, Y;Hüttmann, G and Hillmann, D},
   title = {Simultaneous functional imaging of neuronal and photoreceptor layers in living human retina},
   journal = {Optics Letters 44(23)},
 
   pages = {5671-5674},
   DOI = {10.1364/OL.44.005671},
   
   year = {2019},
   type = {Journal Article}
}

@article{Hüttmann2019,
   author = {Kepp, T;Droigk, C;Casper, M;Evers, M;Hüttmann, G;Salma, N;Manstein, D;Heinrich, M P. and Handels, H},
   title = {Segmentation of mouse skin layers in optical coherence tomography image data using deep convolutional neural networks},
   journal = {Biomed Opt Expr 10(7)},
  
   pages = {3484-3496},
   DOI = {10.1364/BOE.10.003484},
   url = {https://doi.org/10.1364/BOE.10.003484},
   year = {2019},
   type = {Journal Article}
}

@article{Kohlfärber2019,
   author = {Kohlfaerber, T;Ding, S;Rahmanzadeh, R;Jüngst, T;Groll, J;Schulz-Hildebrandt, H and Hüttmann, G},
   title = {Investigation of cell dynamics in 3D cell spheroids and cell interaction with 3D printed scaffolds by mOCT},
   journal = {Transactions on Additive Manufacturing Meets Medicine 1(1)},
   
   DOI = {10.18416/AMMM.2019.1909S03P19},
   year = {2019},
   type = {Journal Article}
}

@inbook{Hillmann2019,
   author = {Hillmann, Dierck;Pfäffle, Clara;Spahr, Hendrik;Sudkamp, Helge;Franke, Gesa and Hüttmann, Gereon},
   title = {In Vivo FF-SS-OCT Optical Imaging of Physiological Responses to Photostimulation of Human Photoreceptor Cells},
   booktitle = {High Resolution Imaging in Microscopy and Ophthalmology: New Frontiers in Biomedical Optics},
   editor = {Bille, Josef F.},
   publisher = {Springer International Publishing},
   address = {Cham},
   pages = {181-194},
   ISBN = {978-3-030-16638-0},
   
   url = {https://doi.org/10.1007/978-3-030-16638-0_8},
   year = {2019},
   type = {Book Section}
}

@article{Vogel-2019-1,
   author = {Fischer, T;Klinger, A;Smolinski, D von;Orzekowsky-Schroeder, R;Nitzsche, F;Vogel, A;Hüttmann, G and Gebert, A},
   title = {High-resolution imaging of the living gut mucosa: lymphocyte clusters beneath intestinal M cells are highly dynamic structures},
   journal = {Cell and Tissue Research},
   ISSN = {0302-766X (Print) 
1432-0878 (Online)},
   year = {2019},
   type = {Journal Article}
}

@article{Hillmann2019,
   author = {Hillmann, D.;Pfaffle, C.;Spahr, H.;Burhan, S.;Kutzner, L.;Hilge, F. and Hüttmann, G.},
   title = {Computational adaptive optics for optical coherence tomography using multiple randomized subaperture correlations},
   journal = {Opt Lett 44 (15)},
 
   pages = {3905-3908},
   ISSN = {1539-4794 (Electronic)
0146-9592 (Linking)},
   DOI = {10.1364/OL.44.003905},
   url = {https://www.ncbi.nlm.nih.gov/pubmed/31368998},
   year = {2019},
   type = {Journal Article}
}

@article{Schulz-Hildebrandt:18,
author = {Hinnerk Schulz-Hildebrandt and Tom Pfeiffer and Tim Eixmann and Sabrina Lohmann and Martin Ahrens and Joshua Rehra and Wolfgang Draxinger and Peter K\"{o}nig and Robert Huber and Gereon H\"{u}ttmann},
journal = {Opt. Lett.},
keywords = {Fiber optics imaging; Endoscopic imaging; Medical and biological imaging; Optical coherence tomography; Fourier domain mode locking; Image quality; Optical coherence tomography; Single mode fibers; Step index fibers; Three dimensional imaging},
number = {18},
pages = {4386--4389},
publisher = {Optica Publishing Group},
title = {High-speed fiber scanning endoscope for volumetric multi-megahertz optical coherence tomography},
volume = {43},
month = {Sep},
year = {2018},
url = {https://opg.optica.org/ol/abstract.cfm?URI=ol-43-18-4386},
doi = {10.1364/OL.43.004386},
abstract = {We present a forward-viewing fiber scanning endoscope (FSE) for high-speed volumetric optical coherence tomography (OCT). The reduction in size of the probe was achieved by substituting the focusing optics by an all-fiber-based imaging system which consists of a combination of scanning single-mode fibers, a glass spacer, made from a step-index multi-mode fiber, and a gradient-index fiber. A lateral resolution of 11 $\mu$m was achieved at a working distance of 1.2 mm. The newly designed piezo-based FSE has an outer diameter of 1.6 mm and a rigid length of 13.5 mm. By moving the whole imaging optic in spirals for scanning the sample, the beam quality remains constant over the entire field of view with a diameter of 0.8 mm. The scanning frequency was adjusted to 1.22 kHz for use with a 3.28 MHz Fourier domain mode locked OCT system. Densely sampled volumes have been imaged at a rate of 6 volumes per second.},
}

@article{schulz2018novel,
title = {Novel endoscope with increased depth of field for imaging human nasal tissue by microscopic optical coherence tomography},
author = {Schulz-Hildebrandt, H; Pieper, M; Stehmar,C; Ahrens, M; Idel, C; Wollenberg,B; K\"{o}nig,P and Gereon H\"{u}ttmann},
editor = {Optic Socie Amer},
url = {https://www.osapublishing.org/abstract.cfm?URI=boe-9-2-636
https://www.osapublishing.org/boe/viewmedia.cfm?uri=boe-9-2-636&seq=0},
doi = {10.1364/BOE.9.000636},
isbn = {10.1364/BOE.9.000636},
year = {2018},
date = {2018-01-16},
journal = {Biomedical Optics Express},

pages = {636-647},
abstract = {Intravital microscopy (IVM) offers the opportunity to visualize static and dynamic changes of tissue on a cellular level. It is a valuable tool in research and may considerably improve clinical diagnosis. In contrast to confocal and non-linear microscopy, optical coherence tomography (OCT) with microscopic resolution (mOCT) provides intrinsically cross-sectional imaging. Changing focus position is not needed, which simplifies especially endoscopic imaging. For in-vivo imaging, here we are presenting endo-microscopic OCT (emOCT). A graded-index-lens (GRIN) based 2.75 mm outer diameter rigid endoscope is providing 1.5 \textendash 2 μm nearly isotropic resolution over an extended field of depth. Spherical and chromatic aberrations are used to elongate the focus length. Simulation of the OCT image formation, suggests overall a better image quality in this range compared to a focused Gaussian beam. Total imaging depth at a reduced sensitivity and lateral resolution is more than 200 μm. Using a frame rate of 80 Hz cross-sectional images of concha nasalis were demonstrated in humans, which could resolve cilial motion, cellular structures of the epithelium, vessels and blood cells. Mucus transport velocity was determined successfully. The endoscope may be used for diagnosis and treatment control of different lung diseases like cystic fibrosis or primary ciliary dyskinesia, which manifest already at the nasal mucosa.},
keywords = {Endoskope, OCM},
pubstate = {published},
tppubtype = {article}
}

@conference{Casper2017,
title = {Imaging cold-induced vasodynamic behaviour in skin using OCT for microangiography (Conference Presentation)},
author = {Malte Casper and Hinnerk Schulz-Hildebrandt and Michael Evers and Cuc Nguyen and Reginald Birngruber and Gereon H\"{u}ttmann and Dieter Manstein},
editor = {Spie},
doi = {doi: 10.1117/12.2251485},
year = {2017},
date = {2017-04-19},
booktitle = {Proceedings Volume 10037, Photonics in Dermatology and Plastic Surgery},
volume = {10037OS},
abstract = {In dermatology the reflexes of vasoconstriction and vasodilation are known as important mechanisms of thermoregulation of the inner body. Imaging the physiology of microvasculature of the skin with high spatial resolution in three dimensions while reacting to changes in temperature is crucial for understanding the complex processes of vasodynamics, which result in constriction and dilation of vessels. However, previous studies using Laser-Doppler flowmetry and -imaging could not provide reliable angiographic images which allow to quantify changes in blood vessel diameter. Here, we report a different approach for angiographic imaging of microvasculature of a anaesthetized rodent model using speckle variance optical coherence tomography (svOCT) during and after localized cooling. Therefore a commercial OCT with a center wavelength of 1.3 μm and a spatial resolution of 13µm was used in combination with a custom built cooling device to image such reflexes at the mouse ear pinna and dorsal skinfold. Cooling was applied in steps of 2−5◦ C starting at the baseline temperature of 27◦ C down to −10◦ C. To our surprise and in contrast to the general opinion in literature, we were able to observe that the majority of vessels with a diameter larger than 20 μm maintain perfused with a constant diameter when the tissue is cooled from baseline to subzero temperatures. However, vasoconstriction was observed very rarely and only in veins, which led to their occlusion. The results of this experiment lead us to reconsider essential aspects of previous understanding of temperature-induced vasodynamics in cutaneous microvasculature.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}

@article{Karpf:16,
author = {Sebastian Karpf and Matthias Eibl and Benjamin Sauer and Fred Reinholz and Gereon H\"{u}ttmann and Robert Huber},
journal = {Biomed. Opt. Express},
keywords = {Fiber optics imaging; Nonlinear optics, fibers; Lasers, fiber; Fluorescence microscopy; Nonlinear microscopy; Femtosecond pulses; In vivo imaging; Laser sources; Nanosecond pulses; Optical systems; Ultrafast lasers},
number = {7},
pages = {2432--2440},
publisher = {Optica Publishing Group},
title = {Two-photon microscopy using fiber-based nanosecond excitation},
volume = {7},
month = {Jul},
year = {2016},
url = {https://opg.optica.org/boe/abstract.cfm?URI=boe-7-7-2432},
doi = {10.1364/BOE.7.002432},
abstract = {Two-photon excitation fluorescence (TPEF) microscopy is a powerful technique for sensitive tissue imaging at depths of up to 1000 micrometers. However, due to the shallow penetration, for in vivo imaging of internal organs in patients beam delivery by an endoscope is crucial. Until today, this is hindered by linear and non-linear pulse broadening of the femtosecond pulses in the optical fibers of the endoscopes. Here we present an endoscope-ready, fiber-based TPEF microscope, using nanosecond pulses at low repetition rates instead of femtosecond pulses. These nanosecond pulses lack most of the problems connected with femtosecond pulses but are equally suited for TPEF imaging. We derive and demonstrate that at given cw-power the TPEF signal only depends on the duty cycle of the laser source. Due to the higher pulse energy at the same peak power we can also demonstrate single shot two-photon fluorescence lifetime measurements.},
}

@article{Wang2016,
   author = {Wang, S. and Huttmann, G. and Scholzen, T. and Zhang, Z. and Vogel, A. and Hasan, T. and Rahmanzadeh, R.},
   title = {A light-controlled switch after dual targeting of proliferating tumor cells via the membrane receptor EGFR and the nuclear protein Ki-67},
   journal = {Sci Rep},
   volume = {6},
   pages = {27032},
   note = {2045-2322
Wang, Sijia
Huttmann, Gereon
Scholzen, Thomas
Zhang, Zhenxi
Vogel, Alfred
Hasan, Tayyaba
Rahmanzadeh, Ramtin
Journal Article
England
Sci Rep. 2016 Jun 1;6:27032. doi: 10.1038/srep27032.},
   abstract = {Using nanotechnology for optical manipulation of molecular processes in cells with high spatial and temporal precision promises new therapeutic options. Especially tumor therapy may profit as it requires a combination of both selectivity and an effective cell killing mechanism. Here we show a dual targeting approach for selective and efficient light-controlled killing of cells which are positive for epidermal growth factor receptor (EGFR) and Ki-67. Liposomes with the covalently linked EGFR antibody Erbitux enabled selective uptake of FITC-labeled Ki-67 antibody TuBB-9 in EGFR-positive cells pre-loaded with the photoactive dye BPD. After irradiation at 690 nm, BPD disrupted the endosomal membranes and delivered the antibodies to the nucleoli of the cells. The second irradiation at 490 nm activated the FITC-labeled TuBB-9, which caused inactivation of the Ki-67 protein and subsequent cell death via apoptosis. Efficient cell killing was possible at nanomolar concentrations of TuBB-9 due to the effective transport by immune liposomes and the high efficacy of the Ki-67 light-inactivation. Delivery of the liposomal constructs and cell destruction correlated well with the EGFR expression pattern of different cell lines (HeLa, OVCAR-5, MCF-7, and human fibroblasts), demonstrating an excellent selectivity.},
   ISSN = {2045-2322},
   DOI = {10.1038/srep27032},
   year = {2016},
   type = {Journal Article}
}

@misc{Miura2013,
   author = {Miura, Y and Huettmann, G and Orzekowsky-Schroeder, R and Steven, P and Szaszák, M and Koop, N and Brinkmann, R },
   title = {Two-photon Microscopy and Fluorescence Lifetime Analysis of Lipid Peroxidation Product in Photoreceptor Outer Segment and in Retinal Pigment Epithelial Cell},
   publisher = {ARVO Meeting Abstracts},
   month = {March 26, 2012 },
   url = {http://www.abstractsonline.com/Plan/ViewAbstract.aspx?sKey=57630548-893d-4e45-9ddc-b6f547dd4ff0&cKey=d08a30bc-fe98-40a2-8a1c-1b171e4becd3&mKey=f0fce029-9bf8-4e7c-b48e-9ff7711d4a0e},
   year = {2013},
   type = {Poster}
}

@article{Yao,
   author = {Yao, C and Qu, X. and Zhang, Z. and B., Yao and Hüttmann, G and Rahmanzadeh, R.},
   title = {Influence of Laser Parameters on Membrane Permeability with Nanoparticles and Targeted Antibody Transfection},
   journal = {J Biomed Opt},
   volume = {14},
   pages = {054034},
   note = {Journal article},
   year = {2009}
}

@misc{Qu,
   author = {Qu, X. and Wang, J. and Zhang, Z. and Koop, N. and Rahmanzadeh, R. and Huttmann, G.},
   title = {Imaging of cancer cells by multiphoton microscopy using gold nanoparticles and fluorescent dyes},
   volume = {13},
   number = {3},
   pages = {031217},
   note = {Using Smart Source Parsing
May-Jun},
   abstract = {Due to their unique optical properties, optical probes, including metal nanoparticles (NPs) and fluorescent dyes, are increasingly used as labeling tools in biological imaging. Using multiphoton microscopy and fluorescence lifetime imaging (FLIM) at 750-nm excitation, we recorded intensity and FLIM images from gold NPs (30 nm) and the fluorescent dye Alexa 488 (A488) conjugated with monoclonal ACT-1 antibodies as well as Hoechst 33258 (H258) after incubation with the lymphoma cell line (Karpas-299). From the FLIM images, we can easily discriminate the imaging difference between cells and optical probes according to their distinct fluorescence lifetimes (cellular autofluorescence: 1 to 2 ns; gold NPs: <0.02 ns; A488: 3.5 ns; H258: 2.5 ns). The NP-ACT-1 and A488-ACT-1 conjugates were bound homogeneously on the surface of cells, whereas H258 stained the cell nucleus. We demonstrate that the emission intensity of gold NPs is about ten times stronger than that of the autofluorescence of Karpas-299 cells at the same excitation power. Compared with fluorescent dyes, stronger emission is also observed from gold NPs. Together with their high photostability, these observations suggest that gold NPs are a viable alternative to fluorescent dyes for cellular imaging and cancer diagnosis.},
   ISBN = {1083-3668 (Print)
1083-3668 (Linking)},
   year = {2008}
}

@article{Yao,
   author = {Yao, C. P. and Zhang, Z. X. and Rahmanzadeh, R. and Huettmann, G.},
   title = {Laser-based gene transfection and gene therapy},
   journal = {IEEE Trans Nanobioscience},
   volume = {7},
   number = {2},
   pages = {111-9},
   note = {Yao, C P
Zhang, Z X
Rahmanzadeh, R
Huettmann, G
Research Support, Non-U.S. Gov't
Review
United States
IEEE Trans Nanobioscience. 2008 Jun;7(2):111-9.},
   abstract = {The plasma membrane of mammalian cells can be transiently permeablized by optical means and exogenous materials or genes can be introduced into the cytoplasm of living cells. Until now, few mechanisms were exploited for the manipulation: laser is directly and tightly focused on the cells for optoinjection, laser-induced stress waves, photochemical internalization, and irradiation of selective cell targeting with light-absorbing particles. During the past few years, extensive progress and numerous breakthroughs have been made in this area of research. This review covers four different laser-assisted transfection techniques and their advantages and disadvantages. Universality towards various cell lines is possibly the main advantage of laser-assisted optoporation in comparison with presently existing methods of cell transfection.},
   keywords = {Cell Membrane/ radiation effects
DNA/ administration & dosage/ pharmacokinetics
Gene Therapy/ methods
Lasers
Transfection/ methods},
   year = {2008}
}

@article{Rahmanzadeh,
   author = {Rahmanzadeh, R. and Huttmann, G. and Gerdes, J. and Scholzen, T.},
   title = {Chromophore-assisted light inactivation of pKi-67 leads to inhibition of ribosomal RNA synthesis},
   journal = {Cell Prolif},
   volume = {40},
   number = {3},
   pages = {422-30},
   note = {Rahmanzadeh, R
Huttmann, G
Gerdes, J
Scholzen, T
England
Cell Prolif. 2007 Jun;40(3):422-30.},
   abstract = {OBJECTIVES: Expression of the nuclear Ki-67 protein (pKi-67) is strongly associated with cell proliferation. For this reason, antibodies against this protein are widely used as prognostic tools for the assessment of cell proliferation in biopsies from cancer patients. Despite this broad application in histopathology, functional evidence for the physiological role of pKi-67 is still missing. Recently, we proposed a function of pKi-67 in the early steps of ribosomal RNA (rRNA) synthesis. Here, we have examined the involvement of pKi-67 in this process by photochemical inhibition using chromophore-assisted light inactivation (CALI). MATERIALS AND METHODS: Anti-pKi-67 antibodies were labelled with the fluorochrome fluorescein 5(6)-isothiocyanate and were irradiated after binding to their target protein. RESULTS: Performing CALI in vitro on cell lysates led to specific cross-linking of pKi-67. Moreover, the upstream binding factor (UBF) necessary for rRNA transcription was also partly subjected to cross-link formation, indicating a close spatial proximity of UBF and pKi-67. CALI in living cells, using micro-injected antibody, caused a striking relocalization of UBF from foci within the nucleoli to spots located at the nucleolar rim or within the nucleoplasm. pKi-67-CALI resulted in dramatic inhibition of RNA polymerase I-dependent nucleolar rRNA synthesis, whereas RNA polymerase II-dependent nucleoplasmic RNA synthesis remained almost unaltered. CONCLUSIONS: Our data presented here argue for a crucial role of pKi-67 in RNA polymerase I-dependent nucleolar rRNA synthesis.},
   keywords = {Antibodies, Antinuclear
Antibodies, Monoclonal
Cell Division/physiology
Cell Nucleolus/physiology
Fluorescein-5-isothiocyanate
Fluorescent Dyes
HeLa Cells
Humans
Ki-67 Antigen/*genetics/*metabolism
Photochemistry
RNA Polymerase I/metabolism
RNA, Ribosomal/*biosynthesis},
   year = {2007}
}

@article{Yao,
   author = {Yao, C. and Rahmanzadeh, R. and Endl, E. and Zhang, Z. and Gerdes, J. and Huttmann, G.},
   title = {Elevation of plasma membrane permeability by laser irradiation of selectively bound nanoparticles},
   journal = {J Biomed Opt},
   volume = {10},
   number = {6},
   pages = {064012},
   note = {Yao, Cuiping
Rahmanzadeh, Ramtin
Endl, Elmar
Zhang, Zhenxi
Gerdes, Johannes
Huttmann, Gereon
Research Support, Non-U.S. Gov't
United States
J Biomed Opt. 2005 Nov-Dec;10(6):064012.},
   abstract = {Irradiation of nanoabsorbers with pico- and nanosecond laser pulses could result in thermal effects with a spatial confinement of less than 50 nm. Therefore absorbing nanoparticles could be used to create controlled cellular effects. We describe a combination of laser irradiation with nanoparticles, which changes the plasma membrane permeability. We demonstrate that the system enables molecules to penetrate impermeable cell membranes. Laser light at 532 nm is used to irradiate conjugates of colloidal gold, which are delivered by antibodies to the plasma membrane of the Hodgkin's disease cell line L428 and/or the human large-cell anaplastic lymphoma cell line Karpas 299. After irradiation, membrane permeability is evaluated by fluorescence microscopy and flow cytometry using propidium iodide (PI) and fluorescein isothiocyanate (FITC) dextran. The fraction of transiently permeabilized and then resealed cells is affected by the laser parameter, the gold concentration, and the membrane protein of the different cell lines to which the nanoparticles are bound. Furthermore, a dependence on particle size is found for these interactions in the different cell lines. The results suggest that after optimization, this method could be used for gene transfection and gene therapy.},
   keywords = {Biopolymers/pharmacokinetics
Cell Line, Tumor
Cell Membrane Permeability/ physiology/ radiation effects
Drug Delivery Systems/ methods
Fluoresceins/ pharmacokinetics
Humans
Lasers
Lymphoma/ metabolism
Nanostructures},
   year = {2005}
}