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

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 III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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...

You might also read

Related Articles

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

Sort by
Same author

Progression-directed ablative radiotherapy improves event-free survival in oligoprogressive NSCLC.

Frontiers in oncology·2026
Same author

Neural correlates of altered loss aversion in alcohol use disorder: preliminary evidence of sex-related differences from 18F-FDG-PET imaging.

Frontiers in psychiatry·2026
Same author

Expert variability as a benchmark for validating automatic CT-MRI registration in brain stereotactic radiosurgery.

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

Association between dose to specific pelvic substructures and urinary and sexual dysfunction following Single-Dose ablative radiotherapy for prostate Cancer: A post hoc analysis from the ABRUPT trial.

Clinical and translational radiation oncology·2026
Same author

A Biological-Driven Approach to Explore Dose-Escalated Ultra-Hypofractionation in Breast Cancer Radiotherapy.

Biomedicines·2025
Same author

Real-time monitoring and appropriate margin selection in linac-based prostate SBRT: Analysis of two different intrafraction motion monitoring systems.

Medical physics·2025

Related Experiment Video

Updated: May 12, 2026

Strategies for Optimization of Cryogenic Electron Tomography Data Acquisition
08:16

Strategies for Optimization of Cryogenic Electron Tomography Data Acquisition

Published on: March 19, 2021

Considerations on an automatic computed tomography tube current modulation system.

Luca Moro1, Denis Panizza, Daniela D'Ambrosio

  • 1Medical Physics Unit, Salvatore Maugeri Foundation, via S. Maugeri 10, Pavia I-27100, Italy.

Radiation Protection Dosimetry
|April 16, 2013
PubMed
Summary

This study reveals how computed tomography (CT) acquisition parameters affect radiation dose and image noise. Automatic tube current modulation (ATCM) system performance varies with scanned projection radiograph orientation, impacting radiation output.

Related Experiment Videos

Last Updated: May 12, 2026

Strategies for Optimization of Cryogenic Electron Tomography Data Acquisition
08:16

Strategies for Optimization of Cryogenic Electron Tomography Data Acquisition

Published on: March 19, 2021

Area of Science:

  • Medical Physics
  • Radiological Imaging

Background:

  • Computed Tomography (CT) utilizes automatic tube current modulation (ATCM) to optimize radiation dose and image quality.
  • Understanding the impact of acquisition parameters on ATCM is crucial for efficient and safe CT examinations.

Purpose of the Study:

  • To evaluate the effects of varying acquisition parameters on radiation output and image noise within a GE ATCM system.
  • To analyze the influence of scanned projection radiograph (SPR) orientation on radiation dose in CT.

Main Methods:

  • Chest CT examinations were performed on an anthropomorphic phantom using a GE LightSpeed VCT 64-slice scanner.
  • Acquisition parameters including pitch, slice thickness, noise index (NI), and SPR orientation were systematically varied.
  • Radiation output was measured as CT dose index (CTDIvol); image noise was assessed by standard deviation of CT numbers.

Main Results:

  • Radiation output was lower with anterior-posterior (AP) SPR compared to posterior-anterior (PA) SPR.
  • Higher radiation dose in PA SPR is attributed to X-ray beam divergence and ATCM's estimation of increased patient attenuation.
  • Noise Index (NI) showed an inverse relationship with the square root of CTDIvol; decreasing slice thickness increased CTDIvol for a fixed NI.

Conclusions:

  • SPR orientation significantly influences radiation dose in CT examinations using GE's ATCM system.
  • CTDIvol is inversely related to NI and directly related to slice thickness for a fixed NI.
  • Optimizing ATCM system usage requires careful consideration of acquisition parameters and SPR orientation for efficient radiation management.