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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 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 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...
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...
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...

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Related Experiment Video

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Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
09:32

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Computed tomography scan utilization in emergency departments: a multi-state analysis.

Thomas D Kirsch1, Yu-Hsiang Hsieh, Lasantha Horana

  • 1Department of Emergency Medicine, The Johns Hopkins School of Medicine, Baltimore, Maryland 21287, USA.

The Journal of Emergency Medicine
|October 19, 2010
PubMed
Summary

Computed tomography (CT) use in emergency departments (EDs) varies significantly by patient age, ED volume, and provider training. Understanding these predictors is crucial for optimizing resource allocation and patient care in ED settings.

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Area of Science:

  • Emergency Medicine
  • Radiology
  • Health Services Research

Background:

  • Rising computed tomography (CT) use in emergency departments (EDs) raises concerns about costs and radiation risks.
  • Identifying factors influencing CT utilization is essential for managing these concerns.

Purpose of the Study:

  • To identify patient, provider, and emergency department (ED) characteristics that predict CT utilization.

Main Methods:

  • Retrospective analysis of 3,217,396 ED visits across 227 EDs in 41 states from a 12-month billing database (2006).
  • Data included patient demographics, CT use, provider information, and ED volume.

Main Results:

  • Overall CT utilization was 16.7% in adults and 5.3% in pediatric patients.
  • Utilization increased with patient age, higher ED volume, and for patients admitted or transferred.
  • Board-certified emergency medicine physicians showed higher CT utilization (16.1%) compared to non-boarded physicians (11.3%).

Conclusions:

  • CT utilization in EDs is influenced by patient age, ED volume, provider's training, and patient disposition.
  • These findings highlight the need for targeted strategies to manage CT use effectively in emergency settings.