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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...
The Mammary Glands01:12

The Mammary Glands

The female breast is a hemispheric projection of variable size positioned anterior to the pectoralis major and serratus anterior muscles. A fascia layer composed of dense, irregular connective tissue connects it to these muscles.
Each breast features a pigmented projection known as the nipple, through which milk emerges via closely spaced openings of ducts, referred to as lactiferous ducts. Surrounding the nipple is a circular pigmented area of skin named the areola, which appears rough due to...
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...

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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

An anatomically oriented breast coordinate system for mammogram analysis.

Sami S Brandt1, Gopal Karemore, Nico Karssemeijer

  • 1Synarc Imaging Technologies A/S, DK-2610 Rødovre, Denmark. sbrandt@nordicbioscience.com

IEEE Transactions on Medical Imaging
|May 26, 2011
PubMed
Summary
This summary is machine-generated.

A new breast coordinate system accurately registers mammograms using anatomical landmarks like the pectoral muscle and nipple. This improves breast cancer risk assessment by enabling precise feature extraction and comparison across images.

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Area of Science:

  • Medical Imaging
  • Radiology
  • Biomedical Engineering

Background:

  • Accurate registration of 2-D mammograms is crucial for consistent analysis.
  • Existing methods may struggle with variations in breast size and shape.
  • Robust anatomical landmarks are needed for reliable mammogram registration.

Purpose of the Study:

  • To develop an anatomically-based coordinate system for registering female breasts in mammograms.
  • To enable accurate identification of corresponding positions and orientations across mammograms.
  • To improve breast cancer risk assessment using registered mammographic features.

Main Methods:

  • Developed a nonlinear mapping based on pectoral muscle, nipple location, and breast boundary shape.
  • Utilized anatomical landmarks for registration, independent of breast size and shape.
  • Applied the coordinate transform for extracting registered Gaussian derivative features.

Main Results:

  • The new coordinate system enables implicit registration without image warping.
  • Features are registered and extracted without deforming images.
  • Improved classification accuracy in a breast cancer risk assessment study using the system.

Conclusions:

  • The developed breast coordinate system provides accurate anatomical registration of 2-D mammograms.
  • This system enhances breast cancer risk assessment and has broad applicability in mammogram analysis.
  • It facilitates both cross-sectional and temporal studies by pinpointing equivalent anatomical locations.