Residual myocardial hyperemia in regadenoson stress/rest quantitative perfusion cardiac magnetic resonance.

ABSTRACT:

Purpose

This study sought to investigate the presence of residual myocardial hyperemia on the recovery phase in patients undergoing stress CMR.

Material and methods

Fifty patients with clinical indication for stress CMR underwent quantitative perfusion imaging in resting conditions, after regadenoson-induced hyperemia (400 mcg, 5 mL), and 10 min after recovery with euphylline. Studies showing hypoperfusion due to ischemia and/or prior myocardial infarction were excluded. Global myocardial blood flow during rest (MBF_rest), stress (MBF_stress) and recovery (MBF_recovery) and MPR indices (MPR_stress/rest and MPR_{stress/recovery}) were calculated using automated pixel-wise quantitative myocardial perfusion mapping.

Results

SUBMITTER: Bastarrika G 

PROVIDER: S-EPMC12605555 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature