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OVERVIEW
The primary goal of a cardiac MRI is to evaluate heart structure, tissue health, and blood circulation with high precision. It works by aligning hydrogen nuclei in body tissues using a magnet and detecting radiofrequency signals as the nuclei return to baseline. Belonging to non-invasive diagnostic cardiology, it delivers clear anatomical and functional assessments to guide patient treatment plans.
PROCEDURE
The patient lies supine on the scanner bed with ECG leads placed on the chest to monitor heart rhythm. An intravenous line is established if contrast or stress medication is required. The bed moves into the cylindrical magnet bore. The technician instructs the patient to hold their breath for 10 to 15 seconds at intervals while radiofrequency signals capture images synchronized with the heartbeat. The procedure lasts between 30 and 60 minutes.
BENEFITS
Key clinical benefits include zero exposure to ionizing radiation, superior soft-tissue contrast compared to ultrasound, and unmatched accuracy in measuring ventricular volumes and myocardial fibrosis. It serves as the primary standard for tissue-level diagnosis in myocarditis and infiltrative heart diseases.
RECOVERY
Because cardiac MRI is a non-invasive diagnostic test, recovery is immediate. Patients undergoing a standard non-contrast or contrast scan can drive home and resume normal work and dietary habits right after completing the procedure. Patients receiving a pharmacological stress agent undergo brief monitoring before discharge.
WHAT WE TREAT
Cardiac MRI is indicated for diagnosing and managing ischemic heart disease, myocarditis, hypertrophic and dilated cardiomyopathies, congenital heart defects, cardiac masses, pericardial diseases, and valvular disorders. It is also used to assess myocardial viability after a myocardial infarction (heart attack).
PREPARATION
Patients must complete an MRI safety questionnaire to screen for metallic implants, pacemakers, or fragments. Fasting for two to four hours before the scan may be advised. Patients taking beta-blockers or undergoing stress cardiac MRI must avoid caffeine, tea, and chocolate for 24 hours prior to testing.
RISKS
Standard cardiac MRI carries minimal risk. Rare side effects include mild claustrophobia or discomfort from loud scanner noise. Contrast-assisted scans carry a low risk (under 1%) of allergic reactions to gadolinium. Severe adverse events like nephrogenic systemic fibrosis are extremely rare and mitigated by pre-scan kidney function screening.
JOURNEY
The clinical journey begins with a pre-scan screening to confirm patient safety regarding metal implants and kidney function. On procedure day, the patient lies on a motorized table inside the MRI scanner while electrocardiogram leads monitor heart rhythms. Post-scan, patients immediately resume normal daily activities, while a dedicated cardiovascular radiologist or cardiologist interprets the imaging sequences to issue a formal diagnostic report.
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