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Related Concept Videos

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

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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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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.
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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...
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A z score (or standardized value) is measured in units of the standard deviation. It tells you how many standard deviations the value x is above (to the right of) or below (to the left of) the mean, μ. Values of x that are larger than the mean have positive z scores, and values of x that are smaller than the mean have negative z scores. If x equals the mean, then x has a zero z score. It is important to note that the mean of the z scores is zero, and the standard deviation is one.
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A z score (or standardized value) is measured in units of the standard deviation. It indicates how many standard deviations the value x is above (to the right of) or below (to the left of) the mean, μ. Values of x that are larger than the mean have positive z scores, and values of x that are smaller than the mean have negative z scores. If x equals the mean, then x has a zero z score. It is important to note that the mean of the z scores is zero, and the standard deviation is one.
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z scores are the standardized values obtained after converting a normal distribution into a standard normal distribution. A z score is measured in units of the standard deviation. The z score tells you how many standard deviations the value x is above (to the right of) or below (to the left of) the mean, μ. Values of x that are larger than the mean have positive z scores, and values of x that are smaller than the mean have negative z scores. If x equals the mean, then x has a z score of...
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Author Spotlight: Advancing Cardiovascular Imaging - Introducing the Spatially Weighted Calcium Score for Early Disease Detection
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Calcium Scoring for Cardiovascular Computed Tomography: How, When and Why?

John Jeffrey Carr1

  • 1Departments of Radiology, Biomedical Informatics, and Cardiovascular Medicine, Vanderbilt University Medical Center, 2525 West End Avenue, Suite 300-B, Nashville, TN 37203-8281, USA.

Radiologic Clinics of North America
|November 21, 2018
PubMed
Summary

Computed tomographic coronary artery calcium scoring identifies atherosclerosis and predicts future cardiovascular disease risk. This imaging biomarker aids in preventing heart disease and premature death.

Keywords:
AtherosclerosisCalcium scoreCardiacCardiovascular diseaseComputed tomographyCoronary artery calciumPrevention

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Area of Science:

  • Cardiology
  • Radiology
  • Preventive Medicine

Background:

  • Cardiovascular disease is a leading global cause of mortality.
  • Despite treatment advances for myocardial infarction, preventing ischemic heart disease is crucial.
  • Coronary atherosclerosis remains a significant risk factor for cardiovascular events.

Purpose of the Study:

  • To describe the computed tomography (CT) scan process for coronary artery calcium (CAC) scoring.
  • To explain the quantification and interpretation of CAC scores.
  • To highlight CAC scoring as an imaging biomarker for cardiovascular risk assessment.

Main Methods:

  • Performing a non-contrast computed tomography scan of the heart.
  • Quantifying the amount of calcified plaque in the coronary arteries.
  • Interpreting the CAC score in the context of individual risk.

Main Results:

  • The CAC score quantifies coronary atherosclerosis.
  • Higher CAC scores correlate with increased risk of cardiovascular disease and death.
  • The imaging biomarker identifies individuals at risk for premature cardiovascular events.

Conclusions:

  • Computed tomographic CAC scoring is an established method for assessing coronary atherosclerosis.
  • CAC scoring aids in risk stratification for cardiovascular disease.
  • This imaging biomarker supports enhanced prevention strategies for ischemic heart disease.