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Related Concept Videos

Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

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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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Computed Tomography01:10

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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...
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Imaging Studies for Cardiovascular System III: X-Ray01:20

Imaging Studies for Cardiovascular System III: X-Ray

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The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
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Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

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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...
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Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

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Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
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Radiation Doses in Cardiovascular Computed Tomography.

Bartłomiej Kędzierski1, Piotr Macek2, Barbara Dziadkowiec-Macek2

  • 1Department of Radiology and Imaging Diagnostics, Emergency Medicine Center, Marciniak Lower Silesian Specialist Hospital, Fieldorfa 2, 54-049 Wrocław, Poland.

Life (Basel, Switzerland)
|April 28, 2023
PubMed
Summary
This summary is machine-generated.

This study reviews radiation doses in cardiac CT scans, crucial for procedures like TAVI. It highlights methods to reduce radiation exposure and suggests updated organ dose conversion factors for cardiovascular imaging.

Keywords:
TAVI procedurescardiovascular systemcomputed tomographyradiation dose

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Area of Science:

  • Medical Physics
  • Radiology
  • Radiation Biology

Background:

  • Understanding ionizing radiation effects on living organisms is crucial.
  • Accurate estimation of radiation doses in CT examinations is essential for patient safety.
  • Key dose metrics include CTDI, CTDIvol, DLP, SSDE, and ED.

Purpose of the Study:

  • To review contemporary views on radiation dose in CT examinations.
  • To analyze large studies on radiation doses in coronary CT angiography prior to TAVI.
  • To present methods for optimizing radiation dose in cardiovascular CT.

Main Methods:

  • Review of large-scale analyses (CRESCENT, PROTECTION, German Cardiac CT Registry) on cardiac CT radiation doses.
  • Collection of reference dose levels for coronary artery CT examinations.
  • Identification and discussion of dose optimization techniques.

Main Results:

  • Several studies over the last decade provide insights into daily cardiovascular CT practices.
  • Reference dose levels for these examinations have been compiled.
  • Dose optimization methods include voltage reduction, modulation, advanced reconstruction, and protocol adjustments.

Conclusions:

  • Updated organ conversion factors are proposed for cardiovascular CT, increasing from 0.014-0.017 to 0.0264-0.03 mSv/mGy*cm.
  • These findings can guide daily practice in cardiovascular CT examinations.
  • Implementing dose reduction strategies is vital for patient safety.