Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...
Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A proof-of-concept automated method for accurate skin dosimetry: correcting overestimated surface dose measurements.

Physics in medicine and biology·2026
Same author

Combating small extracellular vesicle-mediated immunological barriers in the tumor microenvironment via strategically activatable PEGylated peptides.

Signal transduction and targeted therapy·2026
Same author

TopBP1 orchestrates PU.1-IRF8 transcriptional programming of dendritic cell differentiation and Flt3L-driven tumor immunity.

Experimental & molecular medicine·2026
Same author

Development and validation of an automated, accurate in-house treatment planning system for pencil-beam scanning carbon ion radiotherapy.

Medical physics·2026
Same author

Inhibiting Fatty Acid Oxidation Reverses Autophagy-Mediated Acquired Chemotherapy Resistance in Pancreatic Ductal Adenocarcinoma.

Cancer research·2026
Same author

Morphological variation in rectal hydrogel spacer one month after insertion during low-dose-rate brachytherapy for prostate adenocarcinoma.

Radiation oncology journal·2026

Related Experiment Video

Updated: Jun 22, 2026

Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
12:32

Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans

Published on: September 27, 2020

Fast perspective volume ray casting method using GPU-based acceleration techniques for translucency rendering in 3D

Taek-Hee Lee1, Jeongjin Lee, Ho Lee

  • 1School of Computer Science and Engineering, Seoul National University, Kwanak-gu, Seoul 151-742, Republic of Korea.

Computers in Biology and Medicine
|June 23, 2009
PubMed
Summary
This summary is machine-generated.

This study introduces a faster GPU method for translucency rendering in computed tomography colonography. The new technique significantly speeds up virtual colonoscopy, improving diagnostic capabilities for colon cancer.

More Related Videos

DUCT: Double Resin Casting followed by Micro-Computed Tomography for 3D Liver Analysis
12:39

DUCT: Double Resin Casting followed by Micro-Computed Tomography for 3D Liver Analysis

Published on: September 28, 2021

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training
09:57

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training

Published on: January 18, 2021

Related Experiment Videos

Last Updated: Jun 22, 2026

Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
12:32

Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans

Published on: September 27, 2020

DUCT: Double Resin Casting followed by Micro-Computed Tomography for 3D Liver Analysis
12:39

DUCT: Double Resin Casting followed by Micro-Computed Tomography for 3D Liver Analysis

Published on: September 28, 2021

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training
09:57

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training

Published on: January 18, 2021

Area of Science:

  • Medical Imaging
  • Computer Graphics
  • Computational Science

Background:

  • Graphics Processing Units (GPUs) enable interactive volume rendering.
  • Conventional GPU methods are slow for non-opaque translucency rendering in CT colonography.
  • Efficient rendering is crucial for virtual colonoscopy and cancer diagnosis.

Purpose of the Study:

  • To propose an efficient GPU-based acceleration technique for fast perspective volume ray casting.
  • To improve translucency rendering speed in computed tomography (CT) colonography.
  • To enhance the diagnostic potential of virtual colonoscopy.

Main Methods:

  • Separating empty space searching from shading and compositing steps into distinct GPU processing passes.
  • Implementing multi-pass acceleration for voxel-level empty space leaping.
  • Optimizing empty space leaping for complex colon geometries and near haustral folds.

Main Results:

  • Achieved a rendering speed of 7.72fps for 1024x1024 colonoscopy images, 3.54 times faster than conventional methods.
  • Demonstrated significantly reduced frame-rate variations (two times smaller) for smoother navigation.
  • Validated the efficiency of voxel-level empty space leaping on colon datasets.

Conclusions:

  • The proposed multi-pass GPU acceleration technique significantly enhances translucency rendering performance in CT colonography.
  • The method provides smoother navigation and improved diagnostic accuracy for virtual colonoscopy.
  • This advancement has the potential to aid in the diagnosis of colon cancer.