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Visualization of three-dimensional stomach shapes for virtual observation

Y. Mekada, M. Kasuga, J. Hasegawa, S. Nawano
2001 Excerpta Medica: International Congress Series  
We use both X-ray TV images and external appearances of the subject while taking X-ray images, to transform the shapes of virtualized stomach. Several types of simulated results are presented.  ...  We propose a virtualized stomach and its deformation method based on the approximation of physical features around the stomach.  ...  This work was supported in part by the Grant-in-Aid for Cancer Research, Ministry of Health, Labour and Welfare of Japan, and the grant-in-aid for Private University High-Tech Research Center from the  ... 
doi:10.1016/s0531-5131(01)00097-8 fatcat:tif2x5oohzhhpd27vodarbovne

The use of inversion mode and 3D manual segmentation in volume measurement of fetal fluid-filled structures: comparison with Virtual Organ Computer-aided AnaLysis (VOCAL™)

J. P. Kusanovic, J. K. Nien, L. F. Gonçalves, J. Espinoza, W. Lee, M. Balasubramaniam, E. Soto, O. Erez, R. Romero
2008 Ultrasound in Obstetrics and Gynecology  
The purpose of this study was to compare the agreement of three techniques, as well as the inter-and intra-observer agreements for volume measurements of fetal fluid-filled structures.  ...  Objective-Volume measurements by three-dimensional (3D) ultrasonography are considered more accurate than those performed by two-dimensional (2D) ultrasonography.  ...  The authors wish to acknowledge Mamtha Balasubramaniam, biostatistician, for her contribution to the statistical analysis.  ... 
doi:10.1002/uog.5242 pmid:18254130 pmcid:PMC2398614 fatcat:6chupl6m2fg5thepzxp6lgzf4a

Characterization of the distal esophagus high-pressure zone with manometry, ultrasound and micro-computed tomography

A. K. Vegesna, J. A. Sloan, B. Singh, S. J. Phillips, A. S. Braverman, M. F. Barbe, M. R. Ruggieri, L. S. Miller
2012 Neurogastroenterology and Motility  
This bimodal LEC pressure peak correlated with two areas of thickened muscle observed with ultrasound. Micro-CT of GEJ from organ donors confirmed the two areas of thickened muscle.  ...  Conclusions & Inferences Three distinct anatomic structures, the clasp and sling muscle fibers, crural diaphragm, and LEC combine to form the antireflux barrier of the proximal stomach and distal esophagus  ...  Virtual dissection of these 3D constructs was performed to image the clasp and sling fibers of the stomach (see Fig. 4A ), using sphere-shaped and cylinder-shaped virtual 'cutting boxes'.  ... 
doi:10.1111/nmo.12010 pmid:22998376 pmcid:PMC3530622 fatcat:b3saj6r3jzdvngfy2lytj5odau

Virtual Anatomical and Endoscopic Exploration Method of Internal Human Body for Training Simulator

Koojoo Kwon, Jin Seo Park, Byeong-Seok Shin
2020 Journal of Korean medical science  
We have developed a virtual dissection exploration system that provides realistic three-dimensional images and a virtual endoscopic experience.  ...  In medical education, several visualization methods for studying inside the human body have been introduced as a way to verify the structure of internal organs.  ...  ACKNOWLEDGMENTS Raw data of the Visible Korean Human were acquired by the assistance from the Korea Institute of Science and Technology Information.  ... 
doi:10.3346/jkms.2020.35.e90 pmid:32233159 pmcid:PMC7105510 fatcat:vzqnb7fuf5gfja56l67awvq6ha

Enhanced CT and CT virtual endoscopy in diagnosis of heterotopic pancreas

Dan Wang
2011 World Journal of Gastroenterology  
Non-enhanced CT and enhanced CT scanning were performed, and the resulting images were reviewed and analyzed using three-dimensional post-processing software, including CTVE.  ...  Several heterotopic pancreas sites were involved; three occurred in the stomach, including the gastric antrum (n = 2) and lesser curvature (n = 1), and two were in the duodenal bulb.  ...  Images were analyzed by application of three-dimensional postprocessing software, including CT virtual endoscopy (CTVE).  ... 
doi:10.3748/wjg.v17.i33.3850 pmid:21987629 pmcid:PMC3181448 fatcat:r3sctpkrfbh43ddl3t4ys4nbla

Usefulness of three-dimensional visualization technology in minimally invasive treatment for infected necrotizing pancreatitis

Peng-Fei Wang, Zhi-Wei Liu, Shou-Wang Cai, Jun-Jun Su, Lei He, Jian Feng, Xian-Lei Xin, Shi-Chun Lu
2018 World Journal of Gastroenterology  
Usefulness of three-dimensional visualization technology in minimally invasive treatment for infected necrotizing pancreatitis.  ...  AIM To explore the value of three-dimensional (3D) visualization technology in the minimally invasive treatment for infected necrotizing pancreatitis (INP).  ...  The red arrow represents the fictional direction and path of puncture. Three-dimensional visualized reconstruction image and virtual surgery for Patient No. 4.  ... 
doi:10.3748/wjg.v24.i17.1911 pmid:29740206 pmcid:PMC5937208 fatcat:rabkmcwjxvhrtbxlxkkbaih3ye

RF Propagation and Channel Modeling for UWB Wearable Devices

Kamya YEKEH YAZDANDOOST, Kamran SAYRAFIAN-POUR, Kiyoshi HAMAGUCHI
2011 IEICE transactions on communications  
In this paper, an immersive visualization environment is presented, which is used as a scientific instrument that gives us the ability to observe three-dimensional RF propagation from wearable medical  ...  We have used this virtual environment to further study UWB channels over the surface of a human body.  ...  As observed, the main components of this system include: a three-dimensional human body model, the propagation engine which is a three-dimensional full-wave electromagnetic field simulator (i.e., HFSS:  ... 
doi:10.1587/transcom.e94.b.1126 fatcat:fscdhsg2obemvojk3izghnb2rq

Advanced imaging and visualization in gastrointestinal disorders

Odd Helge Gilja
2007 World Journal of Gastroenterology  
Advanced methods for endoscopic ultrasound, three-dimensional (3D) ultrasound, and tissue Doppler (Strain Rate Imaging) provide detailed information of the GI tract.  ...  Imaging methods such as ultrasonography, magnetic resonance imaging (MRI), endoscopy, endosonography, and elastography will be outlined and visualization with Virtual Reality and haptic methods.  ...  This will result in a clear view of the three-dimensional shape of the entire suspicious region characterized by high strain values.  ... 
doi:10.3748/wjg.v13.i9.1408 pmid:17457973 pmcid:PMC4146926 fatcat:4cylgtkgmnac7hi24k4mgygzyi

The Impacts of Animated-Virtual Actors' Visual Complexity and Simulator Sickness in Virtual Reality Applications

Iwan Kartiko, Manolya Kavakli, Ken Cheng
2009 2009 Sixth International Conference on Computer Graphics, Imaging and Visualization  
This article discusses the effects of Animated Virtual Actors' (AVAs) visual complexity on Simulator Sickness (SS) in Virtual Reality (VR) applications.  ...  Minimising SS for a VR application is thus beneficial.  ...  We are grateful also to Noah Beamer for maintaining Blender Cal3D exporter. We also thank anonymous reviewers for their comments.  ... 
doi:10.1109/cgiv.2009.66 dblp:conf/IEEEcgiv/KartikoKC09 fatcat:6hxyscdblzc4tgrweaum25etum

Validation of a rapid, semiautomatic image analysis tool for measurement of gastric accommodation and emptying by magnetic resonance imaging

Sreerup Banerjee, Sudeepa Dixit, Mark Fox, Anupam Pal
2015 American Journal of Physiology - Gastrointestinal and Liver Physiology  
For assessment of simpler regions of interest (ROI) such as the stomach, the system generates virtual images along arbitrary planes that intersect the ROI edges in the original images.  ...  This analysis was not subject to variation in volume measurements seen between three human observers.  ...  Fox is currently serving as Professor of Gastroenterology and Lead Consultant at the Center for Reflux and Swallowing Disorders, Functional GI Diagnostics Laboratory, Division of Gastroenterology and Hepatology  ... 
doi:10.1152/ajpgi.00095.2014 pmid:25540229 pmcid:PMC4398843 fatcat:3ndfybxo3jdavbenaxesl5vali

Reconstruction of esophageal stenosis that had persisted for 40 years using a free jejunal patch graft with virtual endoscopy assistance: A case report

Daisuke Fujisawa, Hirotaka Asato, Katsunori Tanaka, Tetsuo Itokazu, Shizuo Kojya
2019 Archives of Plastic Surgery  
Using VE findings, we were able to visualize the 3-dimensional shape beyond the stenosis. VE can also help predict the area of the defect after contracture release.  ...  For reconstructive surgeons, the greatest advantage of VE is that it is a noninvasive modality capable of visualizing areas inaccessible to a flexible endoscope.  ...  Using the VE findings, we were able to visualize the 3-dimensional shape beyond the stenosis. In addition, VE helped to predict the area of the defect after contracture release.  ... 
doi:10.5999/aps.2019.00101 pmid:31018631 pmcid:PMC7093279 fatcat:vvxl7r2mdneofcgiqimwnscqcq

Exploring early designs for teaching anatomy and physiology to children using wearable e-textiles

Leyla Norooz, Jon Froehlich
2013 Proceedings of the 12th International Conference on Interaction Design and Children - IDC '13  
Traditionally, human anatomy (body form) and physiology (body function) are taught using a mixture of techniques from worksheets to three-dimensional models.  ...  Our current implementation uses dyed fabric to show the size and position of body organs and a mixture of electronic sensors and visualizations to dynamically exhibit the wearer's physiology (e.g., heart  ...  [17] suggest using three-dimensional teaching aids such as anatomic dolls or models to accompany worksheets, stories, audio-visuals, and games (both board games and video games).  ... 
doi:10.1145/2485760.2485869 dblp:conf/acmidc/NoroozF13 fatcat:hlphqphi6reoxfvlwy7rhmzvei

Design of the Floating Hologram Method with a Reverse Pyramid Type for CT and MR Diagnosis in Clinical Room

Minchan Kim, Kicheol Yoon, Kwang Gi Kim
2022 Diagnostics  
In the field of medical diagnosis, big data and three-dimensional (3D) imaging diagnosis technology are being applied due to the development of these technologies.  ...  Selected objects for observation were liver, colon, and lung, and to observe these tissues, a Computed Tomography (CT) image was input to the hologram system through the picture archiving and communication  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/diagnostics12051157 fatcat:7aslrztkkbbgzk2aqqk7iyj4gy

Expansion of the Free Form Projection Display Using a Hand-Held Projector [chapter]

Kaoru Kenjo, Ryugo Kijima
2014 Lecture Notes in Computer Science  
Furthermore, we investigated the effects of user's stereoscopy by visual gap of images projected each projector.  ...  We developed the multi projection system that supplement the free form projection display (FFPD) that virtual object image projected onto the real object with the projection of hand-held projector.  ...  However, there were subjects who complained that the presence of frame confused some part of the three dimensional visual perception.  ... 
doi:10.1007/978-3-319-07458-0_7 fatcat:2iwrjgngt5fwxoa45ukql2zlfa

HamsaTouch

Hiroyuki Kajimoto, Masaki Suzuki, Yonezo Kanno
2014 Proceedings of the extended abstracts of the 32nd annual ACM conference on Human factors in computing systems - CHI EA '14  
This paper documents the development and evaluation of a novel tactile vision substitution system (TVSS) for the people with visual impairments.  ...  The system is composed of an electro-tactile display with 512 electrodes, the same number of optical sensors beneath each electrode, and a smartphone with a camera and an LCD.  ...  The second issue is the way of presentation. Our surrounding environment is complex and three dimensional (3D).  ... 
doi:10.1145/2559206.2581164 dblp:conf/chi/KajimotoSK14a fatcat:vyhxumqw6bgu7jcyiqa3cac73y
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