Diagnostic Performance of Magnetic Resonance Imaging in Chronic Thromboembolic Pulmonary Hypertension: A Systematic Review

MRI demonstrates encouraging diagnostic performance for detecting perfusion defects and chronic thromboembolic material in CTEPH, with MRI perfusion offering high sensitivity and ce-MRA showing high specificity. Non-contrast MRA adds value for proximal vessel assessment when used alongside ce-MRA. However, methodological limitations and study heterogeneity constrain the certainty of existing evidence. Larger, standardised prospective studies are needed to define the precise role of MRI within contemporary CTEPH diagnostic pathways.