Oral Abstract Session 02: Early Career Awards 2: Translational (2018)-Feasibility and reproducibility of a free-breathing, multi-shot, navigated image acquisition for ventricular volume quantification during continuous exercise: A pilot study of healthy controls

Feasibility and reproducibility of a free-breathing, multi-shot, navigated image acquisition for ventricular volume quantification during continuous exercise: A pilot study of healthy controls

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Video Summary

The speaker presented a novel exercise CMR method that acquires images during continuous in-scanner cycling, avoiding exercise cessation and complex post-processing. In 10 healthy volunteers scanned twice 16 weeks apart, free-breathing navigated balanced SSFP images were taken at rest, moderate, and high intensity. Despite reduced image quality at high heart rates, the scans were analyzable. Both ventricles showed decreasing end-diastolic and end-systolic volumes and increasing ejection fraction and cardiac index with exercise. Intra-, inter-observer, and inter-scan reproducibility were generally excellent, supporting feasibility and suggesting potential clinical utility.

Keywords

exercise CMR

continuous in-scanner cycling

balanced SSFP

ventricular function

reproducibility