ArticleEuropean heart journal. Imaging methods and practice2026
Peak exercise-to-recovery changes in biventricular volumes and function assessed by exercise cardiovascular magnetic resonance.
Article in European heart journal. Imaging methods and practice, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Aims: Exercise cardiovascular magnetic resonance (Ex-CMR) assesses cardiac function under physiological stress. Imaging during continuous in-bore exercise reflects peak physiology but is challenging, prone to motion artefacts and patient discomfort. Exercise performed outside the scanner followed by rapid post-exercise imaging improves feasibility and image quality, but the time course of ventricular volume recovery after exercise cessation remains poorly defined. We compared biventricular Ex-CMR measurements during steady-state peak exercise with those acquired sequentially after exercise termination. Methods and results: Ten healthy adults [24 (21-31) years; 8 female] underwent Ex-CMR on a 3T system. Biventricular volumes were assessed using a free-breathing, electrocardiogram-triggered, highly accelerated multi-slice cine sequence with compressed sensing and deep learning-based reconstruction. Short-axis stacks were acquired at rest, during two steady-state peak exercise acquisitions, and at three sequential post-exercise timepoints, with the first recovery scan beginning 10-15 s after cessation. Linear mixed-effects models evaluated recovery categorically and as a function of elapsed time. Differences between repeated peak acquisitions were small [left ventricular (LV) end-diastolic volume +1 ± 3 mL; LV end-systolic volume -4 ± 7 mL]. Immediately after cessation (13 ± 2 s), biventricular volumes remained unchanged vs. peak (all Conclusion: Biventricular volumes measured immediately after exercise closely approximate peak physiology, whereas recovery changes occur rapidly and linearly thereafter. Rapid post-exercise acquisition offers a practical surrogate for peak measurements while improving image quality.
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