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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...
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...
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...
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...
Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...

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Related Experiment Video

Updated: Jun 21, 2026

Clinical Imaging of Microwave Mammography
05:28

Clinical Imaging of Microwave Mammography

Published on: November 14, 2025

Chest tomosynthesis: technical principles and clinical update.

James T Dobbins1, H Page McAdams

  • 1Carl E. Ravin Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, Durham, NC 27705, USA. james.dobbins@duke.edu

European Journal of Radiology
|July 21, 2009
PubMed
Summary
This summary is machine-generated.

Digital tomosynthesis offers tomographic imaging benefits like computed tomography (CT) at lower cost and radiation dose. This technique improves visibility of chest structures and enhances small lung nodule detection.

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Area of Science:

  • Radiologic imaging
  • Medical physics

Background:

  • Digital tomosynthesis is an advanced radiographic technique.
  • It generates multiple section images from a single X-ray tube pass.
  • It offers tomographic imaging similar to CT but with reduced cost and radiation exposure.

Purpose of the Study:

  • To review the components and capabilities of digital tomosynthesis systems.
  • To discuss the efficacy of tomosynthesis in lung nodule detection.
  • To explore clinical implementation strategies for chest imaging.

Main Methods:

  • Description of tomosynthesis system components (X-ray tube, detector, mover, algorithms).
  • Review of recent literature on lung nodule detection using tomosynthesis.
  • Presentation of clinical trial data on nodule detection in human subjects.

Main Results:

  • Tomosynthesis improves visibility of normal chest anatomy (vessels, airways, spine).
  • Reduced visual clutter enhances the detection of small lung nodules.
  • Clinical trial data supports improved nodule detection rates.

Conclusions:

  • Digital tomosynthesis provides valuable tomographic information for chest imaging.
  • It offers an effective alternative to conventional radiography for lung nodule detection.
  • Further implementation in clinical practice is warranted.