Keywords: Myocardium, Heart, Cardiac function, Cine MRI, Multiposture MRI
Motivation: Cardiac function is affected by body posture. However, MRI measurements have been limited to the supine posture.
Goal(s): Our goal was to evaluate the effect of body posture on cardiac function using multiposture MRI.
Approach: We assessed cardiac function in supine and standing postures in seven healthy males using a 0.4T multiposture MRI.
Results: Significant reductions in left ventricular end-diastolic volume, end-systolic volume, and stroke volume were observed in the standing posture, with increased heart rate, while cardiac output and ejection fraction remained consistent across postures.
Impact: Multiposture MRI enables the assessment of the postural effect on cardiac function and potentially provides new diagnostic insights into regulatory response to postural change.
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