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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...
Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and the...
X-ray Imaging01:24

X-ray Imaging

German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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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Related Experiment Video

Updated: Jun 29, 2026

Clinical Imaging of Microwave Mammography
05:28

Clinical Imaging of Microwave Mammography

Published on: November 14, 2025

Technical developments in mammography.

Martin J Yaffe1, James G Mainprize, Roberta A Jong

  • 1Imaging Research Program, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada. martin.yaffe@sunnybrook.ca

Health Physics
|October 14, 2008
PubMed
Summary
This summary is machine-generated.

Mammography, a key breast cancer diagnostic tool, has advanced significantly with digital technology improving accuracy, especially for younger women and those with dense breasts. Modern mammography offers substantial mortality reduction benefits with minimal radiation risk.

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Area of Science:

  • Radiology and Medical Imaging
  • Oncology
  • Biomedical Engineering

Background:

  • Mammography is a cornerstone in breast cancer diagnosis and screening.
  • Technological advancements over 35 years have enhanced image quality and reduced radiation dose.
  • Screening mammography demonstrably reduces breast cancer mortality in specific populations.

Purpose of the Study:

  • To review the evolution and current state of mammography technology.
  • To highlight the diagnostic and screening benefits of mammography.
  • To discuss the safety profile and future directions in mammography.

Main Methods:

  • Review of historical and recent technical developments in mammography.
  • Analysis of the efficacy of mammography in breast cancer diagnosis and screening.
  • Evaluation of radiation dose and risk-benefit analysis.

Main Results:

  • Digital mammography offers improved accuracy, particularly for women under 50 and those with dense breasts.
  • Significant improvements in contrast, spatial resolution, and tissue coverage have been achieved.
  • Modern mammography provides substantial mortality reduction benefits with a very low radiation risk.

Conclusions:

  • Mammography remains a vital tool for breast cancer management.
  • Digital mammography represents a significant technological leap, enhancing diagnostic capabilities.
  • Ongoing research promises further improvements in mammography's value and safety.