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

Computed Tomography01:10

Computed Tomography

9.0K
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...
9.0K
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

420
DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
420
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

945
Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
945
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

395
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...
395
Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

1.2K
Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
1.2K
Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

647
Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
647

You might also read

Related Articles

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

Sort by
Same author

Cardio-oncology awareness: a multidisciplinary survey among trainees and practicing professionals at multidisciplinary settings.

Future cardiology·2026
Same author

Response to letter to the editor: Investigating the impact of RapidPlan on Ethos automated planning.

Medical dosimetry : official journal of the American Association of Medical Dosimetrists·2026
Same author

Feasibility of using geometry-based synthetic dose distributions for Knowledge-based planning model training.

Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB)·2026
Same author

Site-Specific Assessment of Statistical Process Control to Set Tolerance and Action Limits for Patient-Specific Quality Assurance in RapidArc Treatment Delivery.

Journal of biomedical physics & engineering·2025
Same author

Masked Vessel Triggering a Catastrophic Bleed During EUS-Guided Cystogastrostomy.

Digestive diseases and sciences·2025
Same author

An End-to-end Quality Assurance Procedure for Ethos Online Adaptive Radiotherapy.

Journal of medical physics·2025

Related Experiment Video

Updated: Feb 17, 2026

Treatment of Liver Metastases Using an Internal Target Volume Method for Stereotactic Body Radiotherapy
08:54

Treatment of Liver Metastases Using an Internal Target Volume Method for Stereotactic Body Radiotherapy

Published on: May 8, 2018

15.1K

Investigating different computed tomography techniques for internal target volume definition.

S A Yoganathan1, K J Maria Das1, V Siva Subramanian2

  • 1Department of Radiotherapy, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India.

Journal of Cancer Research and Therapeutics
|December 15, 2017
PubMed
Summary
This summary is machine-generated.

This study evaluated computed tomography (CT) techniques for internal target volume (ITV) delineation. Average CT and half-fan cone beam CT (HF-CBCT) showed the least deviation compared to four-dimensional CT (4DCT).

More Related Videos

PET and MRI Guided Irradiation of a Glioblastoma Rat Model Using a Micro-irradiator
10:48

PET and MRI Guided Irradiation of a Glioblastoma Rat Model Using a Micro-irradiator

Published on: December 28, 2017

10.1K
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

10.3K

Related Experiment Videos

Last Updated: Feb 17, 2026

Treatment of Liver Metastases Using an Internal Target Volume Method for Stereotactic Body Radiotherapy
08:54

Treatment of Liver Metastases Using an Internal Target Volume Method for Stereotactic Body Radiotherapy

Published on: May 8, 2018

15.1K
PET and MRI Guided Irradiation of a Glioblastoma Rat Model Using a Micro-irradiator
10:48

PET and MRI Guided Irradiation of a Glioblastoma Rat Model Using a Micro-irradiator

Published on: December 28, 2017

10.1K
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

10.3K

Area of Science:

  • Medical Imaging
  • Radiotherapy Planning
  • Radiation Oncology

Background:

  • Accurate internal target volume (ITV) delineation is crucial for effective radiotherapy.
  • Various computed tomography (CT) techniques are used, but their accuracy in capturing internal motion varies.
  • Four-dimensional CT (4DCT) is considered a gold standard for ITV delineation in the presence of respiratory motion.

Purpose of the Study:

  • To compare the accuracy of different CT techniques (fast CT, slow CT, breath-hold CT, FF-CBCT, HF-CBCT, average CT) for ITV delineation against 4DCT.
  • To assess the deviation of ITVs delineated by various CT methods from those obtained by 4DCT.

Main Methods:

  • Simulated respiratory motion using a dynamic thorax phantom with a 3 cm target.
  • Acquired CT and cone beam CT (CBCT) images using a multislice CT scanner and On-Board-Imager.
  • Generated average CT by averaging 10 phases of 4DCT; delineated ITVs for all techniques and compared them to 4DCT ITVs.

Main Results:

  • All evaluated CT and CBCT techniques, except average CT, significantly underestimated the ITV compared to 4DCT (P < 0.05).
  • Fast CT and slow CT showed the largest deviations (-46.1% and -34.3%, respectively).
  • Average CT exhibited the least deviation (-4.7%) from 4DCT, followed closely by HF-CBCT (-12.9%) and breath-hold CT (-11.1%).

Conclusions:

  • Standard CT techniques generally underestimate internal target volume (ITV) when compared to 4DCT.
  • Average CT provides the most accurate ITV delineation among the tested methods in the absence of 4DCT.
  • Half-fan cone beam CT (HF-CBCT) with an appropriate margin may serve as a viable alternative for ITV definition when 4DCT is unavailable.