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

4.8K
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...
4.8K
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

35
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...
35
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

390
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...
390
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

57
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...
57
Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

338
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...
338
Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

217
Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
217

You might also read

Related Articles

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

Sort by
Same author

[Erratum to "Haematopoietic stem cell transplantation in the treatment of autoimmune diseases" [Rev. Med. Interne 29 (2008) 115-121]].

La Revue de medecine interne·2025
Same author

Opportunities, challenges, and difficulties in NMR-based metabolomics applied to neovascular age-related macular degeneration (nAMD) patient follow-up.

Frontiers in molecular biosciences·2025
Same author

European Myeloma Network Group review and consensus statement on primary plasma cell leukemia.

Annals of oncology : official journal of the European Society for Medical Oncology·2025
Same author

Real-Life Management of Patients Aged 80 Years Old and Over With Multiple Myeloma: Results of the EMMY Cohort.

Clinical lymphoma, myeloma & leukemia·2024
Same author

Plasma cell-directed therapies induce profound clinical and durable responses in patients with severe or relapsed/refractory scleromyxedema.

Journal of the European Academy of Dermatology and Venereology : JEADV·2024
Same author

Rituximab with alkylating agent in anti-myelin-associated glycoprotein neuropathy: A retrospective study of 26 cases.

British journal of haematology·2024

Related Experiment Video

Updated: Aug 17, 2025

A Sectioning, Coring, and Image Processing Guide for High-Throughput Cortical Bone Sample Procurement and Analysis for Synchrotron Micro-CT
07:10

A Sectioning, Coring, and Image Processing Guide for High-Throughput Cortical Bone Sample Procurement and Analysis for Synchrotron Micro-CT

Published on: June 12, 2020

5.2K

ASSESSMENT OF OVERRANGING AS A FUNCTION OF PITCH, COLLIMATION AND ROTATION TIME FOR THREE OF THE MOST RECENT AND

L A González-Méndez1, J Bozec1, I Rousselle1

  • 1Pôle de Physique Médicale, C2i santé, Cabinet de Consultants en Ingénierie de la Santé, 10 rue Paul Langevin - Parc d'Activités St Jacques II, 54320 Maxéville, France.

Radiation Protection Dosimetry
|December 15, 2022
PubMed
Summary

Overranging (OR) varies significantly across CT scanner models, impacting radiation dose. Manufacturers show large disparities in OR, highlighting a need for optimization in CT protocols.

More Related Videos

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
05:32

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Published on: February 21, 2025

372
Four-Dimensional CT Analysis Using Sequential 3D-3D Registration
05:05

Four-Dimensional CT Analysis Using Sequential 3D-3D Registration

Published on: November 23, 2019

8.1K

Related Experiment Videos

Last Updated: Aug 17, 2025

A Sectioning, Coring, and Image Processing Guide for High-Throughput Cortical Bone Sample Procurement and Analysis for Synchrotron Micro-CT
07:10

A Sectioning, Coring, and Image Processing Guide for High-Throughput Cortical Bone Sample Procurement and Analysis for Synchrotron Micro-CT

Published on: June 12, 2020

5.2K
Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
05:32

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Published on: February 21, 2025

372
Four-Dimensional CT Analysis Using Sequential 3D-3D Registration
05:05

Four-Dimensional CT Analysis Using Sequential 3D-3D Registration

Published on: November 23, 2019

8.1K

Area of Science:

  • Medical Physics
  • Radiological Imaging

Background:

  • Overranging (OR) is a phenomenon in computed tomography (CT) where radiation is emitted beyond the scanned anatomy.
  • Understanding OR is crucial for optimizing radiation dose and image quality.

Purpose of the Study:

  • To assess overranging (OR) as a function of pitch, collimation, and rotation time for three common CT scanner models in France.
  • To compare the impact of these parameters on OR across different CT vendors.

Main Methods:

  • Overranging was measured using Gafchromic films and computed from exposure data for three CT models.
  • The influence of collimation, pitch, and rotation time on OR was analyzed.

Main Results:

  • Measured OR varied significantly by CT model and protocol (e.g., head protocol: 0.5 cm to 3.44 cm).
  • OR was affected differently by pitch, collimation, and rotation time across the CT scanners.
  • CT scanner B showed the most pronounced increase in OR with collimation.

Conclusions:

  • Overranging remains a significant issue in modern CT scanners.
  • There are substantial disparities in overranging performance among different CT vendors.