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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 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...
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...
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...
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...

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Updated: May 7, 2026

Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
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Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans

Published on: September 27, 2020

Trends in computed tomography utilization rates: a longitudinal practice-based study.

Erik P Hess1, Lindsey R Haas, Nilay D Shah

  • 1From the *Department of Emergency Medicine, Division of Emergency Medicine Research, †Knowledge and Evaluation Research Unit, ‡Department of Health Sciences, Division of Health Care Policy and Research, §Department of Internal Medicine, Division of Primary Care Internal Medicine, Mayo Clinic, Rochester, Minnesota; ∥Texas Medical Institute of Technology, Austin, Texas; and ¶Department of Radiology, Mayo Clinic, Rochester, Minnesota.

Journal of Patient Safety
|October 2, 2013
PubMed
Summary
This summary is machine-generated.

Computed tomography (CT) use remained stable overall in primary care from 2000-2010, but emergency department CT scans significantly increased. CT abdomen and chest were most common, indicating areas for improved CT utilization.

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Four-Dimensional CT Analysis Using Sequential 3D-3D Registration
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Four-Dimensional CT Analysis Using Sequential 3D-3D Registration

Published on: November 23, 2019

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Last Updated: May 7, 2026

Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
12:32

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Published on: September 27, 2020

Four-Dimensional CT Analysis Using Sequential 3D-3D Registration
05:05

Four-Dimensional CT Analysis Using Sequential 3D-3D Registration

Published on: November 23, 2019

Area of Science:

  • Radiology
  • Medical Imaging
  • Health Services Research

Background:

  • Computed tomography (CT) utilization has risen significantly over the past two decades.
  • This increase raises concerns about population-level radiation exposure.
  • Understanding trends in primary care is crucial for managing imaging practices.

Purpose of the Study:

  • To assess trends in CT use within a primary care population between 2000 and 2010.
  • To identify changes in CT utilization rates and types of scans performed.
  • To evaluate the impact of increased CT use on radiation exposure in primary care.

Main Methods:

  • Analysis of administrative data from an integrated, multi-specialty group practice.
  • Calculation of CT utilization rates per 1000 primary care patients.
  • Stratification of CT rates by imaging type and medical specialty.

Main Results:

  • Overall CT use per 1000 patients increased by 10% from 2000 to 2010.
  • Emergency department (ED) CT examinations saw a substantial 81% rise during the same period.
  • CT abdomen and CT chest constituted the majority of scans performed.

Conclusions:

  • While overall primary care CT utilization remained stable, a significant increase in ED CT use was observed.
  • CT abdomen and CT chest are primary targets for interventions aimed at optimizing CT appropriateness.
  • Further research is needed to address the implications of increased ED CT use and radiation exposure.