Cardiac MRI (Heart MRI)

Cardiac MRI uses a strong magnet and radio waves to produce moving and still pictures of the heart. It measures the size and pumping function of the chambers more precisely than ultrasound and, with gadolinium contrast, shows scar, inflammation and abnormal deposits inside the heart muscle.

It is the reference test for characterising heart muscle disease without radiation. It does not show the coronary arteries in the detail that CT or catheter angiography do, and it takes longer than other scans.

What Cardiac MRI (Heart MRI) shows

Cine images give accurate volumes and ejection fraction for both ventricles. Late gadolinium enhancement highlights scar: a pattern starting from the inner wall indicates an old heart attack, while mid-wall or outer patterns point to myocarditis, cardiomyopathy or sarcoidosis. T1 and T2 mapping detect diffuse fibrosis, oedema, amyloid and iron overload. Stress perfusion MRI, with a drug such as adenosine, shows areas of muscle that lack blood flow under load. Flow sequences quantify leaking valves and shunts, and the great vessels and pericardium are seen clearly.

When Cardiac MRI (Heart MRI) is recommended

• Unexplained heart failure or a cardiomyopathy seen on echocardiogram
• Suspected myocarditis, including after a viral illness
• Hypertrophic cardiomyopathy, amyloidosis, sarcoidosis or iron overload assessment
• Chest pain where stress perfusion can show or exclude significant ischaemia
• Deciding whether heart muscle is viable before bypass or stenting
• Congenital heart disease follow-up and athletes with abnormal ECGs
• Cardiac masses and pericardial disease

Limits and situations where another test is better:

• Most older pacemakers and defibrillators, although many modern devices are MR conditional with special precautions
• Severe kidney failure limits gadolinium use
• Severe claustrophobia without sedation
• Irregular fast heart rhythm and inability to hold the breath reduce image quality
• For coronary anatomy, CT coronary angiography is the better test

How to prepare

• Complete the metal safety questionnaire honestly: implants, clips, shrapnel, cochlear devices
• Bring the device card if you have a pacemaker, valve or stent
• Avoid caffeine for 12 to 24 hours before a stress scan
• A recent kidney blood test is needed before contrast
• Remove jewellery, patches and hearing aids

What happens during the test

You lie on your back inside the scanner tunnel with ECG stickers on your chest and a receiver coil over it. The machine is loud, so you wear headphones. You are asked to hold your breath for 8 to 15 seconds many times. A cannula in the arm delivers contrast, and in stress scans a drug that can cause brief flushing, chest tightness or breathlessness for a few minutes. The scan takes 45 to 75 minutes.

Results and next steps

Images are analysed by a cardiologist or radiologist with cardiac MRI training, which takes time: reports are usually ready in 1 to 3 working days. Findings are combined with your ECG, echo and blood tests to confirm a diagnosis, guide medication, decide on a defibrillator or plan revascularisation or valve surgery.

• Test time: 45 to 75 minutes
• Results ready: 1 to 3 working days
• Back to everyday activity: None

Safety and risks

• No ionising radiation
• Mild reactions to gadolinium such as nausea or rash; severe allergy is rare
• Nephrogenic systemic fibrosis in severe kidney failure, very rare with modern agents
• Short-lived symptoms from stress drugs; rarely an arrhythmia or bronchospasm
• Heating or malfunction of unsuitable implants, which is why screening matters

Arranging Cardiac MRI (Heart MRI) in Türkiye

It fits well into a cardiac work-up or second opinion visit, for example when a diagnosis of cardiomyopathy is uncertain or surgery is being planned. It is not useful as a routine screening test in healthy people. Ask for the images on disc or link as well as the report.

Send your previous reports and the question you want answered and a Clinic-Y coordinator replies within 24 hours with suitable teams and written, all-inclusive proposals side by side. Reviewing your case is free.

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