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Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

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Assessing the left atrial phasic volume and function with dual-source CT: comparison with 3T MRI.

Zhaoying Wen¹, Zhaoqi Zhang, Wei Yu

¹Department of Radiology, Beijing Anzhen Hospital,Capital Medical University, Beijing, China.

The International Journal of Cardiovascular Imaging

|January 8, 2010

Summary

Dual-source CT (DSCT) accurately assesses left atrial volume and function, showing high reliability and reproducibility compared to cardiac cine MRI. This technique offers a valuable alternative for patients undergoing coronary CT angiography.

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Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure

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Published on: February 8, 2022

Area of Science:

Cardiovascular Imaging
Radiology
Medical Physics

Background:

Left atrial volume and function are crucial indicators of cardiovascular health.
Assessing left atrial parameters is essential for diagnosing and managing various cardiac conditions.
Cardiac cine MRI (CMR) is the current gold standard for evaluating left atrial function.

Purpose of the Study:

To evaluate the performance of dual-source CT (DSCT) in assessing left atrial volume and function.
To compare DSCT's performance against the reference standard, cardiac cine MRI (CMR).
To determine the reliability and reproducibility of DSCT measurements for left atrial parameters.

Main Methods:

Fifty-one patients referred for CT coronary angiography were included; 49 completed the study.
DSCT and CMR datasets were acquired on the same day for comparative analysis.
Left atrial and ventricular volumes and functions were quantified using 3D semi-segmentation and Report Card 2.0 software, normalized to body surface area.

Main Results:

DSCT measurements showed good correlation (r > 0.75) with CMR.
DSCT slightly, but insignificantly, overestimated indexed left atrial volumes (LAVmax, LAVmin, LAVp, LARV, LAPV, LAAV, LACV).
Left atrial ejection fraction (LAEF) was minimally, insignificantly underestimated by DSCT, with lower measurement variability than CMR.

Conclusions:

DSCT provides highly reliable and reproducible measurements of left atrial phasic volume and function.
DSCT is a viable alternative to CMR for evaluating left atrial parameters in patients undergoing coronary CT imaging.
The findings support the use of DSCT for comprehensive cardiac assessment in this patient group.