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 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

Relationship between size-specific dose estimates and image quality in coronary computed tomography angiography depending on tube voltage and scan field of view.

Quantitative imaging in medicine and surgery·2026
Same author

Estimation of organ doses based on patient-specific characteristics undergoing chest-abdomen-pelvis CT examinations of tube current modulation.

Journal of radiological protection : official journal of the Society for Radiological Protection·2026
Same author

Influence of reference baselines on size-specific dose estimate (SSDE) in head CT examinations.

Journal of radiological protection : official journal of the Society for Radiological Protection·2025
Same author

Correlation analysis of organ doses with dose metrics for patients undergoing organ dose-modulated head CT examinations.

Quantitative imaging in medicine and surgery·2025
Same author

Measurement of axial dose profile for wide detector CT using radiochromic films.

Scientific reports·2025
Same author

A Review of Factors Affecting Radiation Dose and Image Quality in Coronary CTA Performed with Wide-Detector CT.

Tomography (Ann Arbor, Mich.)·2024
Same journal

Radiomics-based causal machine learning for exploratory treatment-effect estimation of neoadjuvant chemotherapy cycle intensity in osteosarcoma: a proof-of-concept study.

BMC medical imaging·2026
Same journal

Gestational age-specific MRI reference values for fetal renal morphology and ADC.

BMC medical imaging·2026
Same journal

MRI findings of intrahepatic cholangiocarcinoma with sarcomatoid differentiation: a retrospective case series.

BMC medical imaging·2026
Same journal

Multimodal deep learning for papillary thyroid carcinoma diagnosis using ultrasound and cytology.

BMC medical imaging·2026
Same journal

MonoGID: geometry and illumination aware enhancement with distillation for self-supervised monocular endoscopic depth estimation.

BMC medical imaging·2026
Same journal

Application of transformer attention mechanism-based multimodal deep learning model in the diagnosis of papillary thyroid carcinoma.

BMC medical imaging·2026
See all related articles

Related Experiment Video

Updated: Jun 6, 2026

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

Optimizing shielding protocols in tube current modulation chest computed tomography: a phantom study.

Qingting Sun1, Yihan Fan1, Pengfei Zhu1

  • 1School of Medical Imaging, Bengbu Medical University, Anhui Province, Bengbu, Anhui, 233030, China.

BMC Medical Imaging
|June 4, 2026
PubMed
Summary
This summary is machine-generated.

Placing lead shielding outside the overranging (OR) region in chest CT scans minimizes radiation dose and maintains diagnostic image quality. Intra-OR shielding significantly increases dose and degrades image quality, making extra-OR placement optimal for radiation protection.

Keywords:
Chest computed tomographyImage qualityOverrangingRadiation doseShieldingTube current modulation

More Related Videos

Multi-Tracer Studies of Brain Oxygen and Glucose Metabolism Using a Time-of-Flight Positron Emission Tomography-Computed Tomography Scanner
08:36

Multi-Tracer Studies of Brain Oxygen and Glucose Metabolism Using a Time-of-Flight Positron Emission Tomography-Computed Tomography Scanner

Published on: June 7, 2024

Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy
11:38

Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy

Published on: July 3, 2014

Related Experiment Videos

Last Updated: Jun 6, 2026

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

Multi-Tracer Studies of Brain Oxygen and Glucose Metabolism Using a Time-of-Flight Positron Emission Tomography-Computed Tomography Scanner
08:36

Multi-Tracer Studies of Brain Oxygen and Glucose Metabolism Using a Time-of-Flight Positron Emission Tomography-Computed Tomography Scanner

Published on: June 7, 2024

Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy
11:38

Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy

Published on: July 3, 2014

Area of Science:

  • Medical Imaging
  • Radiation Physics
  • Radiological Protection

Background:

  • Increasing public awareness of radiation protection necessitates optimized shielding protocols in clinical settings.
  • Chest tube current modulation (TCM) computed tomography (CT) requires careful consideration of shielding placement to balance radiation dose and image quality.

Purpose of the Study:

  • To evaluate the impact of lead shielding placement (intra- vs. extra-overranging region) on radiation dose and image quality in chest TCM CT.
  • To determine the effect of scout image visibility of shielding on radiation dose and boundary image quality.

Main Methods:

  • An anthropomorphic phantom underwent chest CT scans using TCM on a GE Revolution CT scanner.
  • Lead shielding was positioned intra- and extra-overranging (OR) regions, categorized as scout-visible or invisible.
  • Radiation dose within the imaging area and image quality of boundary organs were assessed against an unshielded control.

Main Results:

  • Intra-OR shielding increased radiation dose (CTDIvol up to 22.9%) and significantly degraded boundary image quality (SNR/CNR reductions doubled).
  • Extra-OR shielding resulted in minimal dose increase (<3%) and acceptable image quality (SNR/CNR <10% reduction).
  • Scout-invisible shielding had negligible dose impact but greater image quality degradation than scout-visible shielding.

Conclusions:

  • Extra-overranging (OR) placement of shielding devices is recommended for chest TCM CT to optimize radiation protection and image quality.
  • Phantom study findings suggest extra-OR shielding is superior, but clinical validation is required before routine implementation.