A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Filters
Virtual Unfolding of the Stomach Based on Volumetric Image Deformation
[chapter]
2004
Lecture Notes in Computer Science
Preserved Fulltext
This paper describes a method for generating unfolded views of the stomach based on 3-D gray image deformation. Unfolded views can show the status of the stomach in one image. ...
In the proposed method, we generate the approximated shape using a volumetric model. The volumetric model is deformed so as to generate unfolded views of the stomach. ...
of Science, and the Grant-In-Aid for Cancer Research from the Ministry of Health and Welfare of Japanese Government. ...
doi:10.1007/978-3-540-30136-3_48
fatcat:vgy5mkghkvevjde6o4udtzeiuq
PPU-friendly Biomechanical Models for Virtual Medicine
2009
International Journal of Virtual Reality
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
The main focus of virtual medicine is to develop and deliver virtual reality based training and computer enhanced learning in medicine. ...
With the change in the health economics, the advances of minimal invasive surgery (MIS) and shortening of hospitalization time, source and availability of patient for teaching become a major problem. ...
ACKNOWLEDGMENT The work described in this paper was fully supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region (Project No. ...
doi:10.20870/ijvr.2009.8.1.2709
fatcat:mwsl4sz3abexrn75smwspwokcq
Using the PhysX engine for physics-based virtual surgery with force feedback
2009
International Journal of Medical Robotics and Computer Assisted Surgery
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
Methods-In this work, we propose solutions to this problem and demonstrate how a multimodal surgical simulation environment may be developed based on NVIDIA's PhysX physics library. ...
Conclusions-To develop complex and realistic surgical trainers with realistic organ geometries and tissue properties demands stable physics-based deformation methods which are not always compatible with ...
Acknowledgments
Grant Partial support of this work through the R01 EB005807-01 grant from NIH/NIBIB and 151820/2007-4 grant from CNPq-Brazil are gratefully acknowledged. ...
doi:10.1002/rcs.266
pmid:19449317
pmcid:PMC2810833
fatcat:5bvcnyqlqvgapiw32sydhjy5be
VR-Caps: A Virtual Environment for Capsule Endoscopy
[article]
2021
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Note that this fulltext copy is not of the "primary" version of this work. The version it corresponds to is:
2020 pre-print arXiv:2008.12949v1 fatcat:dhxrdyqii5dije3y74awnn6jeu
on real medical data. ...
Current capsule endoscopes and next-generation robotic capsules for diagnosis and treatment of gastrointestinal diseases are complex cyber-physical platforms that must orchestrate complex software and ...
the 3D shape of the whole organ based on visual feedback from endoscope camera (Widya et al., 2019) . ...
arXiv:2008.12949v2
fatcat:pdtbj2ytajhrzcdd3jjyloilqq
Mechanical Properties of the Human Stomach under Uniaxial Stress Action
2019
Current Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is application/pdf.
Twenty-two fresh human stomach specimens were used for the experimental study of its general strength. ...
Finally, data on mechanical properties of the stomach wall with detailed analysis of anatomical regions of the stomach have been presented. ...
Fresh human stomach specimens were used for an experimental study of the general strength of these organs. ...
doi:10.18520/cs/v116/i11/1886-1893
fatcat:axlbyle7crhnpk53zlvfnhdrxq
Virtual endoscopy: development and evaluation using the Visible Human Datasets
2000
Computerized Medical Imaging and Graphics
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
Virtual endoscopy (VE) is a new method of diagnosis using computer processing of 3D image datasets (such as CT or MRI scans) to provide simulated visualizations of patient specific organs similar or equivalent ...
Additionally, the adjunctive value of full 3D imaging (e.g. looking "outside" of the normal field of view) during the VE exam is being evaluated. ...
Special thanks are extended to Darlene Bernard for preparation of the manuscript. ...
doi:10.1016/s0895-6111(00)00014-8
pmid:10838008
fatcat:c2l7vtip6bdkjcx6bcq4zpr3he
Virtual Endoscopy: Application of 3D Visualization to Medical Diagnosis
1997
Presence - Teleoperators and Virtual Environments
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
Virtual endoscopy is a diagnostic technique in which a three-dimensional imaging technology (CT scan, MRI scan, ultrasound) is used to create a computer-generated representation of a specific patient's ...
The potential is to provide a computer diagnosis to replace an endoscopie procedure, not only for conventional endoscopy such as bronchoscopy, colonoscopy, sinusoscopy, or hysteroscopy, but also for areas ...
The authors also acknowledge the use of the Visible Human Male Dataset from the National Library of Medicine. Special thanks are extended to Darlene Bernard for preparation of the manuscript. ...
doi:10.1162/pres.1997.6.2.179
fatcat:dyjgl4li7ngvfgihv2kir4je6m
Haptic simulation of the liver with respiratory motion
2009
Studies in Health Technology and Informatics
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
This paper presents a framework that accurately simulates respiratory motion, allowing for the fine tuning of relevant parameters in order to produce a patient-specific breathing pattern that can then ...
Ideally, this physiological behaviour should be taken into account in a virtual reality biopsy simulator. ...
The method used for the deformation modelling is based on the 3D Chain-Mail algorithm extension proposed by Li and Brodlie [8] . In this model, the object is defined as a set of point elements. ...
pmid:19377194
fatcat:thwm2ujnv5g4vhv7x7etabc3cy
Toward Anatomical Simulation for Breath Training in Mind/Body Medicine
[chapter]
2009
Recent Advances in the 3D Physiological Human
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
To this end, in this paper, we explore an adaptation method that employs optimization to modify a generic model of respiration to fit the breath patterns of specific individuals. ...
Visualization of the respiratory system is made possible through an anatomically inspired, physically based model of the torso. ...
These examples model the change in shape of a muscle through geometric muscle bellies that stretch and deform based on length. ...
doi:10.1007/978-1-84882-565-9_7
fatcat:pjbx6dw665efjbb6pkgomh2vm4
Adaptive Mesh Expansion Model (AMEM) for Liver Segmentation from CT Image
2015
PLoS ONE
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
The proposed method is evaluated on the basis of different criteria applied to 10 clinical data sets. ...
The virtual deformable simplex model (DSM) is introduced to represent the mesh, in which the motion of each vertex can be easily manipulated. ...
Despite having been studied for several years, the deformable model-based method still required improvement. ...
doi:10.1371/journal.pone.0118064
pmid:25769030
pmcid:PMC4358832
fatcat:4yufz4czrbe3ni5y6bmm5nb4hq
Advanced imaging and visualization in gastrointestinal disorders
2007
World Journal of Gastroenterology
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
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. ...
In another study, an analytical method was developed to describe the three-dimensional geometry of the gastric antrum, the gastric fundus and the whole stomach based on 3D ultrasound acquisitions [56] ...
doi:10.3748/wjg.v13.i9.1408
pmid:17457973
pmcid:PMC4146926
fatcat:4cylgtkgmnac7hi24k4mgygzyi
ON SOME CLINICAL ASPECTS OF GASTRIC DISEASE
1913
Canadian Medical Association Journal
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
not overestimate the importance of many of our usual methods of physical examination. ...
-As everyone knows, we have added to our understanding of the position, size, and shape of the stomach: we have discovered that they are normally subject to great variations, and, in consequence, we should ...
The umbilicus, depending for its relative position upon the shape of the diaphragm and the conformation of the abdomen generally, is altogether too variable a point for accurate mensuration. ...
pmid:20310444
pmcid:PMC1579900
fatcat:ww3wpcv6bfd53pidskg6zil6nq
Graphic and haptic simulation system for virtual laparoscopic rectum surgery
2011
International Journal of Medical Robotics and Computer Assisted Surgery
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Methods Data from MRI of the rectum and real operation videos are used to construct the virtual models. ...
Finally, a real-time cutting technique based on mesh is employed to represent the incision operation. ...
Acknowledgements The authors would like to thank Wenxi Li for his animation video in this project. ...
doi:10.1002/rcs.399
pmid:21563287
fatcat:de6hdubgj5bv5cfgf7tolfhhsu
Soft Tissue Modeling for Surgery Simulation
[chapter]
2004
Handbook of Numerical Analysis
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
We also wish to thank Clément Forest and Jean-Christophe Lombardo for their numerous contributions on force-feedback rendering, collision detection as well as mesh data structure. ...
Acknowledgments We would like to thank Matthias Teschner, Denis Laurendeau and Jean-Marc Schwartz for their priceless comments and for proofreading this article. ...
In [64] , Lombardo et al. proposed an original collision detection method based on the OpenGL graphics library which is especially well-suited for elongated instruments shaped like those used in laparoscopic ...
doi:10.1016/s1570-8659(03)12005-4
fatcat:ezfsuftbvzfcvgyshazjowhr3u
Principles and Applications of Medical Virtual Environments
[article]
2004
Eurographics State of the Art Reports
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is application/pdf.
The medical domain offers many excellent opportunities for the application of computer graphics, visualization, and virtual environments, offering the potential to help improve healthcare and bring benefits ...
This report provides a comprehensive overview of the state-of-the-art in this exciting field. ...
With geometrically-based modelling, the shape of an object is adjusted by changing the position of some control points, or by adjusting the parameters of an implicit function defining the shape. ...
doi:10.2312/egst.20041024
fatcat:of4sims3trcb5cuyyqjx7omoa4
« Previous
Showing results 1 — 15 out of 1,677 results