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Dynamic Distortion Correction for Endoscopy Systems with Exchangeable Optics [chapter]

Thomas Stehle, Michael Hennes, Sebastian Gross, Alexander Behrens, Jonas Wulff, Til Aach
2009 Bildverarbeitung für die Medizin 2009  
In case of endoscopy systems with exchangeable optics, e.g. in bladder endoscopy or sinus endoscopy, the camera sensor and the optics do not form a rigid system but they can be shifted and rotated with  ...  In this paper, we describe an algorithm for the dynamic correction of lens distortion in cystoscopy which is based on a one time calibration.  ...  Systems for bladder or sinus endoscopy, however, usually feature exchangeable optics so that this assumption does not hold.  ... 
doi:10.1007/978-3-540-93860-6_29 dblp:conf/bildmed/StehleHGBWA09 fatcat:w4duzorwlfh2bbmmniefttzldy

Video-rate imaging of microcirculation with single-exposure oblique back-illumination microscopy

Tim N. Ford, Jerome Mertz
2013 Journal of Biomedical Optics  
Imaging is performed with a highresolution rigid Hopkins lens suitable for endoscopy.  ...  Asymmetric anamorphic distortion induced by the prism is characterized and corrected in real time using a graphics-processing unit.  ...  Here, we make use of a rigid Hopkins lens designed for high-resolution clinical endoscopy.  ... 
doi:10.1117/1.jbo.18.6.066007 pmid:23733023 pmcid:PMC3670618 fatcat:5x6qs4d4srbu7fmf5f2uguzb74

The Future of Endoscopic Navigation: A Review of Advanced Endoscopic Vision Technology

Zuoming Fu, Ziyi Jin, Chongan Zhang, Zhongyu He, Zhenzhou Zha, Chunyong Hu, Tianyuan Gan, Qinglai Yan, Peng Wang, Xuesong Ye
2021 IEEE Access  
Multiple endoscopic optical imaging modalities provide data sources for endoscopic vision technology, including white-light endoscopy, contrast-enhanced imaging and technologies involving magnified observation  ...  Although these technologies have been applied to various clinical and pre-clinical diagnoses and treatments, the use and combination of these advanced technologies in endoscopic navigation system for specific  ...  Xiao Liang at Sir Run-Run Shaw Hospital, Hangzhou, China, for helping inspire the development of experiments and this article.  ... 
doi:10.1109/access.2021.3065104 fatcat:nprqk4gjhnhbrjvfbrqouoee6y

A novel method for minimizing distortions in endoscopy medical images

R. Sathiya, R. Kalaimagal
2017 International Journal of Engineering & Technology  
De-interweaving system to kill mutilation is basic.  ...  A short prologue to the historical backdrop of endoscopy we outline the distinctive strategies which exist to perform endoscopic techniques.  ...  De-intertwining system to dispense with mutilation is fundamental.  ... 
doi:10.14419/ijet.v7i1.1.10846 fatcat:jtxc2wb3pjcybojygldgslxh3m

Technical Evolution of Medical Endoscopy

S. Gross, M. Kollenbrandt
2009 Acta Polytechnica  
The first cameras for endoscopic applications made taking photos from inside the human body possible.  ...  Rigid tubes with candle light were given a trial later on. Low light intensity forced the development of alternative light sources. Some of these experiments included burning chemical components.  ...  Til Aach, head of the Institute of Imaging & Computer Vision, RWTH Aachen University, for their kind support and guidance.  ... 
doaj:9f7d4adccd1d48d6b13b8e5a9605ed84 fatcat:h5lhiqb46nbc5hyf5h5zivji5i

Multicolor probe-based confocal laser endomicroscopy: a new world for in vivo and real-time cellular imaging

Tom Vercauteren, François Doussoux, Matthieu Cazaux, Guillaume Schmid, Nicolas Linard, Marie-Amélie Durin, Hédi Gharbi, François Lacombe, Guillermo J. Tearney, Thomas D. Wang
2013 Endoscopic Microscopy VIII  
imaging, but also into an accurate clinical decision making tool with applications as diverse as gastrointestinal endoscopy, pulmonology and urology.  ...  By continuously increasing image quality, reducing invasiveness and improving system ergonomics, Mauna Kea Technologies has turned pCLE not only into an irreplaceable research instrument for small animal  ...  ACKNOWLEDGMENTS The authors would like to thank Bertrand Viellerobe for his visionary contributions and his system architecture skills and Frédéric Ducongé for performing the in vivo experiments from which  ... 
doi:10.1117/12.2002490 fatcat:odvd6nbxf5h7lij47cvh7t5eje

Imaging for Minimally Invasive Surgery

Jan Gunnar Skogås, Hans Olav Myhre, Asbjørn Ødegård, Gabriel Kiss
2016 Surgical Science  
In addition to the introduction of intra-operative image acquisition techniques such as ultrasound, X-ray, CT or MR, optical imaging technology as well as the corresponding processing units have undergone  ...  Subsequently, ongoing research projects in a dedicated visualization laboratory will be discussed and the advantages of updating the imaging equipment continuously in order to keep up with the latest developments  ...  The system can be supplemented with a robotic CT arm and a robotic catheter system.  ... 
doi:10.4236/ss.2016.78048 fatcat:o6xy5xel3vcybdfh7krda4mgqa

Intravital imaging of mouse colonic adenoma using MMP-based molecular probes with multi-channel fluorescence endoscopy

Gyungseok Oh, Su Woong Yoo, Yebin Jung, Yeon-Mi Ryu, Youngrong Park, Sang-Yeob Kim, Ki Hean Kim, Sungjee Kim, Seung-Jae Myung, Euiheon Chung
2014 Biomedical Optics Express  
We present a wide-field multichannel fluorescence endoscope to screen GI tract for colon cancer using multiple molecular probes targeting matrix metalloproteinases (MMP) conjugated with quantum dots (QD  ...  Early detection and treatment of gastrointestinal (GI) diseases can be enhanced with specific molecular markers and endoscopic imaging modalities.  ...  Ahra Cho for system scheme.  ... 
doi:10.1364/boe.5.001677 pmid:24877024 pmcid:PMC4026906 fatcat:caot2hrwnbc3nnn35csmz3lrvi

Optical Versus Video See-Through Head-Mounted Displays in Medical Visualization

Jannick P. Rolland, Henry Fuchs
2000 Presence - Teleoperators and Virtual Environments  
We compare two technological approaches to augmented reality for 3-D medical visualization: optical and video see-through devices.  ...  We then discuss the issues for each approach, optical versus video, from both a technology and human-factor point of view.  ...  Acknowledgments This review was expanded from an earlier paper in a SPIE proceeding by Rolland, Holloway, and Fuchs (1994) , and the authors would like to thank Rich Holloway for his earlier contribution  ... 
doi:10.1162/105474600566808 fatcat:wykj5mtwprfqtm6soilj2ydtvm

Characterization of single-file flow through human retinal parafoveal capillaries using an adaptive optics scanning laser ophthalmoscope

Johnny Tam, Pavan Tiruveedhula, Austin Roorda
2011 Biomedical Optics Express  
Videos were analyzed offline to investigate capillary flow dynamics.  ...  Adaptive Optics Scanning Laser Ophthalmoscopy was used to noninvasively acquire videos of single-file flow through live human retinal parafoveal capillaries.  ...  The authors thank Brandon Lujan for assistance with interpretation of the red-free fundus photo.  ... 
doi:10.1364/boe.2.000781 pmid:21483603 pmcid:PMC3072121 fatcat:gasrfdkl3zgkhjn6kvncpiwge4

Optoelectronic Measurements in Science and Innovative Industrial Technologies [chapter]

Vladimir G.
2011 Optoelectronic Devices and Properties  
Also, new methods for parametric stabilization of wavefronts and photoelectronic transformations of optical signals with a dynamic energy range up to 10 16 have been created (Rahmanov et al.  ...  optical form and with modern element base of optoelectronics and photonics.  ...  Optoelectronic complexes for endoscopy Endoscopy is one of the most important trends in the development of medical science and practice.  ... 
doi:10.5772/15185 fatcat:dcagdgoknfgdvga7cm3v5myp6m

Official American Thoracic Society Technical Standards: Flexible Airway Endoscopy in Children

Albert Faro, Robert E. Wood, Michael S. Schechter, Albin B. Leong, Eric Wittkugel, Kathy Abode, James F. Chmiel, Cori Daines, Stephanie Davis, Ernst Eber, Charles Huddleston, Todd Kilbaugh (+10 others)
2015 American Journal of Respiratory and Critical Care Medicine  
Another advantage of FAE is that the characteristics of the flexible bronchoscope permit the procedure to be done with only minimal mechanical distortion of the airway anatomy and dynamics (36) .  ...  Using an LMA bypasses the upper airway from the nostril to the glottis and distorts the view of the laryngeal anatomy and dynamics (35) .  ... 
doi:10.1164/rccm.201503-0474st pmid:25932763 fatcat:h43w3fmnvjcqfjsukeuulmp2sm

Image computing for fibre-bundle endomicroscopy: A review [article]

Antonios Perperidis, Kevin Dhaliwal, Stephen McLaughlin, Tom Vercauteren
2018 arXiv   pre-print
approved for clinical use in a range of clinical indications.  ...  Miniaturised, flexible fibre-bundles, guided through the working channel of endoscopes, needles and catheters, enable high-resolution imaging across a variety of organ systems.  ...  Professor Dhaliwal is founder and shareholder of Edinburgh Molecular Imaging (Edinburgh, UK) and has in the past received funds for travel and meeting attendance from Mauna Kea Technologies (Paris, France  ... 
arXiv:1809.00604v1 fatcat:blwswhbjczft3lrbln7q5736km

The new agreement of the international RIGA consensus conference on nasal airway function tests

K. Vogt, G. Bachmann-Harildstad, A. Lintermann, A. Nechyporenko, F. Peters, K.D. Wernecke
2018 Rhinology  
Rhinomanometry, acoustic rhinometry, peak nasal inspiratory flow, Odiosoft-Rhino, optical rhinometry, 24-h measurements, computational fluid dynamics, nasometry and the mirrow test were evaluated for important  ...  The state of the art with computational fluid dynamics for the simulation of the airway still depends on high performance computing hardware and will -after standardization of the software and both the  ...  Acknowledgements The following experts in different fields took part as faculty members: Aris Giotakis/Greece, Allergology, for the task force  ... 
doi:10.4193/rhin17.084 pmid:29353289 fatcat:uagny6igercpnh2xhn23lhil3i

The difficult paediatric airway

CJ Coté
2012 Southern African Journal of Anaesthesia and Analgesia  
In addition, if fibre-optic techniques fail, then breath sounds may be of assistance for correct endotracheal tube insertion.  ...  This is particularly important in patients with difficult airway anatomy, since trauma can result in bleeding, swelling and further distortion of an already abnormal airway.  ... 
doi:10.1080/22201173.2012.10872859 fatcat:kmlybjj3cfgifjdmkz7uegdwta
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