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Related Concept Videos

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 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...
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...
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 II: Positron Emission Tomography and Scintigraphy01:25

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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET

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Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
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Reducing radiation dose in CT enterography.

Andrew J Del Gaizo1, Joel G Fletcher, Lifeng Yu

  • 1Department of Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA.

Radiographics : a Review Publication of the Radiological Society of North America, Inc
|July 12, 2013
PubMed
Summary
This summary is machine-generated.

Computed tomographic (CT) enterography uses ionizing radiation, a concern for young patients. Low-dose CT enterography techniques combined with noise reduction maintain diagnostic accuracy while significantly lowering radiation exposure.

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Area of Science:

  • Radiology
  • Medical Imaging

Background:

  • Computed tomographic (CT) enterography is a vital tool for diagnosing small bowel disorders.
  • Patient exposure to ionizing radiation is an inherent risk of CT examinations.
  • The cumulative radiation dose is a significant concern for young patients requiring frequent CT enterography follow-ups.

Purpose of the Study:

  • To explore strategies for reducing radiation dose in CT enterography.
  • To evaluate the effectiveness of noise reduction techniques in maintaining image quality at reduced radiation doses.

Main Methods:

  • Implementing low-dose CT enterography acquisition parameters.
  • Adjusting scan length, tube voltage, and tube current.
  • Utilizing commercial iterative reconstruction and denoising algorithms to mitigate image noise.

Main Results:

  • Radiation dose reduction is achievable through optimized acquisition parameters and reduced scan length.
  • Image quality degradation due to increased noise can be effectively managed.
  • Diagnostic accuracy is preserved when low-dose techniques are combined with advanced noise-control strategies.

Conclusions:

  • A combination of low-dose CT enterography protocols and noise reduction technologies allows for significant radiation dose reduction.
  • These combined strategies maintain diagnostic accuracy, making CT enterography safer for pediatric and young adult populations.
  • This approach addresses the critical need for minimizing radiation exposure in patients undergoing repeated small bowel imaging.