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

7.9K
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...
7.9K

You might also read

Related Articles

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

Sort by
Same author

Intraoperative iStent versus postoperative selective laser trabeculoplasty in early glaucoma patients undergoing cataract surgery: A retrospective comparative study.

Journal francais d'ophtalmologie·2023
Same author

COVID-19 pneumonia imaging follow-up: when and how? A proposition from ESTI and ESR.

European radiology·2021
Same author

[Analysis of brain perfusion single-photon emission tomography images using an easy Zscore imaging system for early diagnosis of Alzheimer's disease].

Nan fang yi ke da xue xue bao = Journal of Southern Medical University·2021
Same author

Is COVID-19 pneumonia differentiable from other viral pneumonia on CT scan?

Respiratory medicine and research·2021
Same author

Artificial intelligence: from challenges to clinical implementation.

Diagnostic and interventional imaging·2020
Same author

Iatrogenic topiramate induced bilateral uveal effusion.

Journal francais d'ophtalmologie·2020

Related Experiment Video

Updated: Dec 27, 2025

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement
06:33

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement

Published on: July 29, 2013

11.6K

Optimization of acquisition parameters for reduced-dose thoracic CT: A phantom study.

K Martini1, J W Moon2, M P Revel3

  • 1Department of Radiology, Cochin Hospital, AP-HP Centre, 75014 Paris, France; Diagnostic and Interventional Radiology, University Hospital Zurich, 8008 Zurich, Switzerland.

Diagnostic and Interventional Imaging
|February 29, 2020
PubMed
Summary

Optimizing reduced-dose computed tomography (CT) protocols for chest imaging involves prioritizing high tube voltage. While lower doses reduce image noise, maintaining visibility of pulmonary structures requires careful parameter selection.

Keywords:
PhantomsRadiation dosageThoraxTomographyX-ray computedimaging

More Related Videos

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
08:30

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

14.8K
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

4.5K

Related Experiment Videos

Last Updated: Dec 27, 2025

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement
06:33

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement

Published on: July 29, 2013

11.6K
X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
08:30

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

14.8K
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

4.5K

Area of Science:

  • Radiology
  • Medical Imaging
  • Radiation Dose Optimization

Background:

  • Computed tomography (CT) is crucial for chest imaging.
  • Reducing radiation dose is a key goal in clinical practice.
  • Balancing dose reduction with image quality is essential for diagnostic accuracy.

Purpose of the Study:

  • To analyze the impact of reduced-dose CT parameters on image noise and pulmonary structure visibility.
  • To identify optimal parameters for ultra-low dose chest CT in routine clinical practice.

Main Methods:

  • Chest phantom CT scans acquired at varying low dose levels (0.15-0.40 mGy CTDIvol).
  • Parameters manipulated included tube voltage, pitch factor, and rotation time.
  • Images reconstructed with adaptive statistical iterative reconstruction (ASIR) at 70% and 100%; signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) calculated; pulmonary structure visibility assessed by readers.

Main Results:

  • High tube voltage yielded the best image quality and SNR/CNR.
  • Lower pitch factor and higher tube current decreased visibility, particularly in the lung periphery.
  • Dose reduction from 0.40 to 0.30 mGy showed no significant visual score decrease, but reduction to 0.15 mGy significantly lowered visibility.
  • ASIR-v100% reduced noise more than ASIR-v70% without significantly altering visibility scores.

Conclusions:

  • High tube voltage is recommended for reduced-dose CT protocols.
  • Decreased SNR and CNR do not always correlate with reduced visibility of pulmonary structures.