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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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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...
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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...
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Related Experiment Video

Updated: Aug 31, 2025

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Image Quality Comparison between Digital Breast Tomosynthesis Images and 2D Mammographic Images Using the CDMAM Test

Ioannis A Tsalafoutas1, Angeliki C Epistatou2, Konstantinos K Delibasis2

  • 1Occupational Health and Safety Department, Radiation Safety Section, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar.

Journal of Imaging
|August 25, 2022
PubMed
Summary

Synthesized 2D (s2D) mammography images show lower image quality than tomographic layer (TL) and standard 2D images. Tomographic layer images generally meet quality standards, unlike s2D images, with high-resolution mode favoring TL images.

Keywords:
CDMAMdigital breast tomosynthesis (DBT)digital mammographyimage quality

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Area of Science:

  • Radiology
  • Medical Imaging
  • Breast Tomosynthesis

Background:

  • Digital Breast Tomosynthesis (DBT) systems offer advanced imaging capabilities.
  • Evaluating image quality (IQ) is crucial for diagnostic accuracy.

Purpose of the Study:

  • To compare the IQ of synthesized 2D (s2D) and tomographic layer (TL) images against standard 2D images from a new DBT system.
  • Assess the impact of different acquisition modes on IQ.

Main Methods:

  • Used the CDMAM test object for IQ evaluation across all acquisition modes.
  • Automated IQ assessment via commercial CDMAM software.
  • Compared s2D, TL, and 2D images.

Main Results:

  • TL images showed comparable or superior IQ to s2D images, and were generally inferior to 2D images.
  • TL images met EUREF quality limits, while s2D images did not.
  • High-dose mode improved TL and s2D image quality, especially with standard mode.
  • High-resolution mode benefited TL images but degraded s2D image quality.

Conclusions:

  • s2D mammography images exhibit inferior IQ compared to both 2D and TL images.
  • High-resolution mode in DBT enhances TL image quality, particularly for small details, despite increased dose.
  • TL images demonstrate better diagnostic potential than s2D images.