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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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Related Experiment Video

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Left Ventricular Diastolic Dysfunction Assessment with Dual-Source CT.

Zhaoying Wen1, Heng Ma2, Ying Zhao3

  • 1Department of Radiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.

Plos One
|May 21, 2015
PubMed
Summary
This summary is machine-generated.

Dual-source CT (DSCT) effectively assesses left atrial (LA) volume and function, revealing LA remodeling in patients with left ventricular (LV) diastolic dysfunction. This quantitative analysis offers a promising prognostic tool for LV diastolic dysfunction severity.

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Area of Science:

  • Cardiology
  • Radiology
  • Medical Imaging

Background:

  • Left ventricular (LV) diastolic dysfunction is a significant clinical issue.
  • Assessing LV diastolic dysfunction severity and its impact on cardiac structures is crucial for patient prognosis.
  • Left atrial (LA) function and volume changes are increasingly recognized indicators of diastolic dysfunction.

Purpose of the Study:

  • To evaluate the impact of LV diastolic dysfunction on LA phasic volume and function using dual-source CT (DSCT).
  • To identify a potential CT-based prognostic parameter for LV diastolic dysfunction through quantitative LA analysis.

Main Methods:

  • Seventy-seven patients underwent same-day DSCT and Doppler echocardiography.
  • LA reservoir, conduit, and contractile functions were assessed via LA volume (LAV) measurements at different cardiac phases, normalized to body surface area (BSA).
  • Patients were categorized into four groups based on echocardiographic LV diastolic filling patterns; statistical analyses included ANOVA and Spearman correlation.

Main Results:

  • LA ejection fraction, contraction, reservoir, and conduit functions were reduced in pseudonormal and restrictive LV diastolic dysfunction groups compared to normal and impaired relaxation groups.
  • Indexed LA volume (LAVi) showed strong correlations with LV diastolic dysfunction severity (LAVmax r=0.85, LAVmin r=0.91, LAVp r=0.84).
  • LAVi increased progressively with worsening LV diastolic dysfunction.

Conclusions:

  • Left atrial remodeling occurs in patients with LV diastolic dysfunction.
  • DSCT-derived LA phasic volume and function parameters correlate with LV diastolic dysfunction severity.
  • Quantitative LA analysis using DSCT presents a viable alternative prognostic marker for LV diastolic function.