Related Experiment Video
Updated: Jun 26, 2026
Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
Published on: July 20, 2022
Automated assessment of left atrial function from time-left atrial volume curves using a novel speckle tracking
Keitaro Ogawa1, Takeshi Hozumi, Kenichi Sugioka
1Department of Internal Medicine and Cardiology, Osaka City University Medical School, Osaka, Japan.
Background:
Using a novel speckle-tracking imaging method, time-left atrial (LA) volume curves (TLAVCs) can be automatically obtained. The aim of this study was to evaluate whether this method can be used for the measurement of LA function with TLAVCs.
Methods:
In 10 normal subjects and 20 patients, apical 4-chamber images were obtained. Maximum volume, reservoir volume, conduit volume, booster pump volume, and minimum volume were measured from TLAVCs. The results were compared with those obtained by the manual tracing method on every frame during 1 cardiac cycle.
Results:
There was good agreement between the speckle-tracking imaging and manual methods for maximum LA volume (r = 0.98, P < .001), reservoir volume (r = 0.82, P < .001), conduit volume (r = 0.87, P < .001), booster pump volume (r = 0.80, P < .001), and minimum volume (r = 0.98, P < .001). The time to obtain TLAVCs was significantly shorter with the speckle-tracking imaging method (64 +/- 22 seconds) than with the manual method (22 +/- 4 minutes).
Conclusion:
TLAVCs obtained using the speckle-tracking imaging method can be used for the rapid and noninvasive automated quantitation of LA function.
