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Related Concept Videos

Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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Imaging Studies II: Ultrasonography

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Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
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 VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...

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Related Experiment Video

Updated: May 14, 2026

Clinical Imaging of Microwave Mammography
05:28

Clinical Imaging of Microwave Mammography

Published on: November 14, 2025

Practitioner compression force variability in mammography: a preliminary study.

C E Mercer1, P Hogg, R Lawson

  • 1The Nightingale Centre and Genesis Prevention Centre, University Hospital of South Manchester, Manchester, UK. mercer.claire@gmail.com

The British Journal of Radiology
|February 7, 2013
PubMed
Summary
This summary is machine-generated.

Mammography compression varies significantly between practitioners, with three distinct groups identified based on applied force. Compression also varied widely for different breast volumes, with larger volumes generally receiving more compression.

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Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
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Last Updated: May 14, 2026

Clinical Imaging of Microwave Mammography
05:28

Clinical Imaging of Microwave Mammography

Published on: November 14, 2025

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
13:44

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns

Published on: August 30, 2013

Area of Science:

  • Radiology
  • Medical Imaging
  • Mammography

Background:

  • Mammography is a critical tool for breast cancer screening.
  • Standardized compression is essential for image quality and diagnostic accuracy.

Purpose of the Study:

  • To determine if the absolute amount of breast compression in mammography varies between and within practitioners.
  • To identify patterns in compression application related to breast density and volume.

Main Methods:

  • Analysis of mammography data from 488 clients imaged by 14 practitioners.
  • Collated data included Breast Imaging Reporting and Data System (BI-RADS) density, breast volume, and compression force.
  • Statistical analysis to compare compression levels across practitioners and patient characteristics.

Main Results:

  • Significant differences in mean breast compression were observed between practitioners (p<0.0001).
  • Practitioners were categorized into low, intermediate, and high compression groups, with no significant within-group variation.
  • Compression varied widely for a given breast volume, with a trend of higher compression for larger volumes.

Conclusions:

  • Practitioner variability in compression application during mammography is a significant factor.
  • Three distinct practitioner groups based on compression force were identified.
  • Further research is needed to analyze practitioner, client, and equipment variables in mammography imaging.