Fig. 2
From: Evaluation of non-invasive imaging parameters in coronary microvascular disease: a systematic review
Overview of study outcomes presented as mean ± SD in patients and controls for MPRI by CMR (a), CFR by PET (b) and CFR by TTE (c). For CMR. Error bars are not shown for some studies as some only assessed patient or control subjects. Studies with multiple patient or control groups are indicated by numbers. CFR coronary flow reserve, CMR cardiac magnetic resonance imaging, MPRI myocardial perfusion reserve index, PET positron emission tomography, TTE transthoracic echocardiography