hjerteMRICT

HjerteMRICT is a composite cardiac imaging approach that integrates magnetic resonance imaging (MRI) and computed tomography (CT) to evaluate heart anatomy, function, tissue characteristics, and coronary vessels. By combining MRI's superior soft-tissue contrast and lack of ionizing radiation for functional assessment with CT's high-resolution visualization of coronary arteries and calcifications, hjerteMRICT aims to provide a comprehensive evaluation in selected patients.

Cardiac MRI components include cine sequences for ventricular volumes and function; T1 and T2 mapping for tissue characterization; and late gadolinium enhancement for scar or fibrosis. Cardiac CT components include coronary CT angiography to delineate coronary anatomy, calcium scoring, and occasionally CT perfusion.

Typical indications include suspected ischemic heart disease, cardiomyopathy evaluation, myocarditis or inflammatory disease, congenital heart disease, and pre-procedural planning for interventions. The approach may be performed in a staged fashion or, in specialized centers, integrated in a same-day protocol.

Safety and limitations: CT involves ionizing radiation and iodinated contrast, with risks including contrast-induced nephropathy and allergic reactions. MRI avoids radiation but has contraindications such as certain implants and gadolinium exposure in renal impairment. Gated acquisition requires patient cooperation and can be lengthy; availability and cost may limit use.

Data integration relies on multimodality imaging workup and often requires dedicated software to co-register datasets and produce a comprehensive report. HjerteMRICT is not a routine test for all patients but is used selectively where complementary information from MRI and CT can influence management.