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Preliminary development of the Active Colonoscopy Training Model

JungHun Choi, Ravindra, Randy Robert, Drozek
2011 Medical Devices : Evidence and Research  
The pressure sensors will check the pressure at different parts of the colon.  ...  The real-time localized distal tip gives the colonoscopy trainee easier and more confident operation without introducing an additional device in the colonoscope.  ...  During the colonoscopy, the trainee did not need to find the mock landmarks in in vitro artificial colon.  ... 
doi:10.2147/mder.s20479 pmid:22915931 pmcid:PMC3417875 fatcat:46hee4i7mjb63lsfivw3cedcea

Front Matter: Volume 9786

2016 Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling  
Publication of record for individual papers is online in the SPIE Digital Library. Paper Numbering: Proceedings of SPIE follow an e-First publication model.  ...  using a Base 36 numbering system employing both numerals and letters.  ...  and disparity range stabilization: a comparison of different feature detectors [9786-47] 9786 1D Position-based adjustment of landmark-based correspondence finding in electromagnetic sensor-based  ... 
doi:10.1117/12.2240097 dblp:conf/miigp/X16 fatcat:e2sr443rvfa7rcz24tfpgb44gy

An optical flow approach to tracking colonoscopy video

Jianfei Liu, Kalpathi R. Subramanian, Terry S. Yoo
2013 Computerized Medical Imaging and Graphics  
In this work, we demonstrate a computer vision algorithm based on optical flow to compute egomotion from live colonoscopy video, which is then used to navigate and visualize the corresponding patient anatomy  ...  The key feature of the algorithm lies in the effective combination of sparse and dense optical flow fields to compute the focus of expansion (FOE); FOE permits independent computation of camera translational  ...  would like to thank the National Cancer Institute for the Walter Reed Army Medical Center colonoscopy training datasets and the National Library Medicine for the Medical Informatics Training Program in  ... 
doi:10.1016/j.compmedimag.2013.01.010 pmid:23490235 fatcat:ug5zowqeznawffjbq4df4xqweu

Extraction of visual features with eye tracking for saliency driven 2D/3D registration

Adrian J. Chung, Fani Deligianni, Xiao-Peng Hu, Guang-Zhong Yang
2005 Image and Vision Computing  
The strength and potential pitfalls of the method are demonstrated with feature correspondence for 2D to 3D image registration.  ...  Significant improvements in pose estimation efficiency are achieved without apparent reduction in registration accuracy when compared to that of using an intensity-based similarity measure. q  ...  The flexibility of colonoscopes and bronchoscopes also rules out the use of landmark-based systems such as those with an infrared tracker as described in [10] .  ... 
doi:10.1016/j.imavis.2005.07.003 fatcat:t5f74wg6k5gl7owag43p5dvg2i

Dual-Continuum Design Approach for Intuitive and Low-Cost Upper Gastrointestinal Endoscopy

Nicolo Garbin, Long Wang, James H. Chandler, Keith L. Obstein, Nabil Simaan, Pietro Valdastri
2019 IEEE Transactions on Biomedical Engineering  
This was assessed against a 1:1 target, while ease-of-use was validated using landmark identification tasks performed in a stomach simulator by one expert and ten non-expert users; benchmarked against  ...  Pre-clinical validation consisted of comparative trials in in-vivo porcine and human cadaver models. Target mapping was achieved with an average error ofin bending angle.  ...  Wilson and the staff at School of Medicine at the University of Leeds for their time and assistance during the cadaver trials, P. William and the staff at the Vanderbilt S.R.  ... 
doi:10.1109/tbme.2018.2881717 pmid:30452348 pmcid:PMC6522341 fatcat:aftc5vmqnra3hhhi7ivolqly7m


Mathias Lux, Michael Riegler, Pål Halvorsen, Konstantin Pogorelov, Nektarios Anagnostopoulos
2016 Proceedings of the 7th International Conference on Multimedia Systems - MMSys '16  
Then, we designed and developed a set of lesion and findings detection and localization approaches based on hand-crafted methods as well as on global-, local-and deepfeature-based methods, which serves  ...  We target lesions and findings detection and localization in the gastrointestinal (GI) tract of the human body in order to be able to support medical experts in their daily routine work.  ...  , and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.  ... 
doi:10.1145/2910017.2910630 dblp:conf/mmsys/LuxRHPA16 fatcat:jfweprlxfzb2lommgkw6nqqwi4

CARS 2021: Computer Assisted Radiology and Surgery Proceedings of the 35th International Congress and Exhibition Munich, Germany, June 21–25, 2021

2021 International Journal of Computer Assisted Radiology and Surgery  
Methods The TMR sensor based electromagnetic tracking system consists of a field generator and a TMR sensor device.  ...  Conclusion We have constructed and evaluated the position estimation accuracy of an electromagnetic tracking system using a TMR sensor. The mean error of sensor position estimation was 1.24 mm.  ...  Artificial intelligence coronary calcium scoring in low dose chest CT-Ready to go?  ... 
doi:10.1007/s11548-021-02375-4 pmid:34085172 fatcat:6d564hsv2fbybkhw4wvc7uuxcy

Enhancement of spatial awareness in natural orifice transluminal endoscopic surgery

Vahe Karimyan, Ara Darzi, Guang-Zhong Yang
Enhancing scene visualisation, for instance by means of additional viewpoints or electromagnetic tracking, seems a feasible strategy for augmenting spatial awareness in NOTES.  ...  This study aims to propose novel approaches involving electromagnetic tracking and additional off-axis visualisation in an attempt to assess, as well as enhance spatial awareness of the operating field  ...  Different types of location and position tracking devices have been used in surgery over the years, including mechanical spatial linkage devices, sound-based position sensors, optical trackers, and electromagnetic  ... 
doi:10.25560/11084 fatcat:s4ea4uosjngyvh4wd643e2oh3u

2015 Canadian Surgery Forum Abstracts

2015 Canadian journal of surgery  
In doing so, non-formula based methods were often found to significantly underestimate the calculated blood loss. Direct comparison between nonformula based methods yielded inconsistent findings.  ...  We propose using real-time electromagnetic (EM) navigation to 3-dimensionally delineate and track the tumour resection volume intraoperatively.  ...  A population-based study of colorectal cancer in patients Withdrawn 30 Comparison of different methods of immediate breast reconstructions for breast cancer patients: Is "single stage" really better  ... 
pmid:26204369 pmcid:PMC4603961 fatcat:tvbr67g3gzcfniarictdo3wicy

Abstracts DGAV

2018 Innovative Surgical Science  
The current approach of the Nav EVAR project is guiding EVAR interventions in real-time with an electromagnetic tracking system after attaching a sensor on the catheter tip and displaying this information  ...  The external markers designed for this study were visible in the CT scan and the electromagnetically tracked pointer fitted in each marker hole.  ...  fast-track concepts.  ... 
doi:10.1515/iss-2018-2001 pmid:31579781 pmcid:PMC6604581 fatcat:vpl4pdcqcbgvfjo7sdhvxuh2xu

Gaze Contingent Robotic Control in Minimally Invasive Surgery

Kenko Fujii, Guang-Zhong Yang
A misalignment quantification approach and a classification method based on gaze to infer varying perceptual-motor misalignment are developed to enable ergonomic assessment during endoscopic procedures  ...  A gaze parameter based framework is introduced to assess the use of a new field-of-view expansion technique for improved visualisation and camera trajectory comprehension when disorientated.  ...  An outline of eye tracking methods will then be given in Section 2.2 along with an overview of how video feature-based eye trackers work.  ... 
doi:10.25560/24562 fatcat:7qrzlrzg4jh4lh34wuzmunyqky

Motor learning induced neuroplasticity in minimally invasive surgery

Kunal Shetty, Ara Darzi, Guang-Zhong Yang, Daniel Leff
Additional challenges posed by reforms to surgical careers and increased public scrutiny, have propelled identification of methods to assess and acquire MIS technical skills.  ...  Technical skills in surgery have become more complex and challenging to acquire since the introduction of technological aids, particularly in the arena of Minimally Invasive Surgery.  ...  landmark!positions 200 .!However,!this!method!of!anatomical! reference! is! more! complex! in! fNIRS! as! the! location! of! each! channel! is! dependent! on! the! placement! of! its! corresponding!  ... 
doi:10.25560/56079 fatcat:xkob4c7mazfobld6mzxqxlj62y

Military Medicine Romanian Journal of REVISTA DE MEDICINĂ MILITARĂ International Editorial Board Scientific Publishing Committee

Dan Mischianu, Mariana Jinga, Redactors Doina, Baltaru, Cluj Napoca, Silviu Stanciu, Constantin Ștefani, Bucharest, Editorial Assistants, Dan Dobre, Cristina Solea, Oana Ciobanu (+43 others)
2016 • September • Romanian Journal of Military Medicine   unpublished
Respecting the normal position of facial landmarks such as the eyebrows and hairline can be challenging during reconstruction.  ...  The diagnosis of hypertension should be based on at least two BP measurements in the sitting position per visit on at least two visits.  ...  Materials and methods: Hepatocellular carcinoma (HCC) is the most common type of primary liver cancer with an incidence ranging from 6.5 % in women to 7.9 % in men.  ...