A cardiac MRI, also called cardiovascular magnetic resonance or CMR, creates detailed moving pictures of the heart using a strong magnetic field, radio waves and a computer. It does not use X-rays. Your cardiologist may request it when the structure, pumping function or tissue of the heart needs a closer look after an ECG, echocardiogram or another test.
At Tesla Imaging & Diagnostic Centre in Meerut, cardiac MRI is performed with dedicated cardiac protocols and ECG-gated imaging. The exact protocol is planned around the question on your prescription; cardiac MRI is not a general screening test and it does not replace an examination by your treating doctor.
What parts of the heart can cardiac MRI examine?
Cardiac MRI can combine still pictures, moving sequences and tissue-sensitive images in one examination. Depending on the protocol, it may help your doctor assess:
- The size of the heart chambers and the thickness of the heart muscle
- How the heart muscle moves and how effectively the ventricles pump
- Heart valves, major blood vessels and blood flow in selected situations
- The pericardium, which is the sac around the heart
- Areas of inflammation, swelling, scar or previous heart-muscle injury
- Some congenital or structural heart conditions and changes after surgery
The scan does not answer every heart question. Coronary artery narrowing, calcium and emergency chest pain may require other tests. Your cardiologist chooses between echocardiography, CT coronary angiography, catheter angiography, cardiac MRI and other investigations according to your symptoms and clinical findings.
Why might a doctor advise cardiac MRI?
A prescription may mention cardiomyopathy, myocarditis, heart failure, previous heart attack, suspected scar, a congenital heart condition, a mass or a question about the pericardium or valves. Cardiac MRI may also be used to measure chamber volumes and pumping function when very detailed assessment is needed.
These words can sound alarming, but a request for MRI does not by itself confirm a diagnosis. The images are interpreted together with your symptoms, ECG, echocardiogram, blood tests, prior scans and clinical history.
Will contrast be needed?
Some cardiac MRI protocols use a gadolinium-based contrast injection to help show blood supply, inflammation or scar in the heart muscle. Other parts of the examination can be performed without contrast. The radiologist selects the protocol according to the clinical question rather than using the same set of images for every patient.
Tell the team before booking if you have kidney disease, are on dialysis, have had a previous contrast reaction, are pregnant or may be pregnant. Bring recent kidney-function results if your doctor has arranged them. Do not skip prescribed medicines or food on your own; follow the specific instructions given for your scan.
What happens during a cardiac MRI?
You will complete MRI safety screening and remove metal objects before entering the scanner room. ECG leads are placed on your chest so image capture can be timed with your heartbeat. You lie on the scanner table, usually with a lightweight receiver over the chest, and the table moves into the MRI scanner.
You will hear repeated tapping and thumping sounds. The technologist can see and speak with you throughout the examination. You will need to lie still and may be asked to hold your breath for short periods so movement does not blur the images. If the protocol needs contrast, a small intravenous line is placed in the arm.
How should you prepare for cardiac MRI in Meerut?
- Bring the prescription and the reason your cardiologist requested the scan.
- Bring previous ECG, echocardiogram, angiography, CT, MRI and relevant blood-test reports.
- Tell the team about any pacemaker, defibrillator, heart valve, stent, surgical clip, cochlear implant, pump or other implanted device.
- Bring the implant or device identification card, if available.
- Tell the team about kidney disease, pregnancy, allergies and difficulty lying flat or holding your breath.
- Share any history of claustrophobia when booking so the team can explain practical options.
- Confirm fasting, caffeine and medicine instructions for your exact protocol; they are not identical for every cardiac MRI.
Specialised cardiac slots should be confirmed in advance. For availability, current pricing and preparation, send your prescription on WhatsApp or call Tesla Imaging before travelling.
How is cardiac MRI different from an echocardiogram?
An echocardiogram uses ultrasound and is often the first imaging test for heart structure and function. Cardiac MRI takes longer but can provide highly detailed measurements and additional information about heart muscle tissue in selected patients. The tests are complementary: having one does not automatically mean the other is unnecessary.
When should you seek urgent care instead of waiting for a scan?
Cardiac MRI is a planned diagnostic examination. If you have new or severe chest pain, marked breathlessness, fainting, sweating with chest discomfort or another possible emergency symptom, seek urgent medical care rather than waiting for an imaging appointment.
Medically reviewed by Dr Shalabh Bansal, DMRD, FRCR (UK).
Tesla Imaging & Diagnostic Centre, 44, New Shivpuri, opposite Eves Hospital, Hapur Road, Meerut, Uttar Pradesh 250002.
Frequently asked questions
Questions patients ask about cardiac MRI
What does a cardiac MRI show?+
Cardiac MRI can show the heart chambers, heart muscle, valves, major blood vessels and the sac around the heart. It can also measure how the heart moves and pumps, and may help identify inflammation, scar or other changes in heart tissue.
Does cardiac MRI use radiation?+
No. Cardiac MRI uses a strong magnetic field and radio waves rather than X-rays. MRI safety screening is still essential because the magnet can affect some implants, devices and metal objects.
Will I need contrast for a cardiac MRI?+
Some cardiac MRI questions require a gadolinium-based contrast injection, while others can be assessed without it. The protocol is selected for the clinical question, so tell the team about kidney problems, allergies and pregnancy before the examination.
How should I prepare for a cardiac MRI?+
Bring your prescription and previous ECG, echocardiogram, angiography, CT or MRI records. Confirm eating, drinking and medicine instructions when booking because preparation can vary with the exact cardiac protocol.
Can I have cardiac MRI with a pacemaker or other implant?+
Some modern devices are MR Conditional and can be scanned only under their stated safety conditions; other devices may not be suitable. Share the exact device name, model and implant card before the appointment so the radiologist and MRI team can assess safety.
How long does a cardiac MRI take?+
Cardiac MRI usually takes longer than many routine scans because several moving images and tissue measurements may be needed. The team will confirm the expected visit time for your prescribed protocol, and you will need to lie still and follow short breathing instructions.
Read the cardiac MRI service information, learn about the MRI facility in Meerut, check patient preparation guidance or find directions to Tesla Imaging. If your prescription is for the coronary arteries, also read about CT angiography in Meerut.
Medical disclaimer: This guide provides general education and appointment information. It does not diagnose a heart condition, decide which test you need or replace advice from your cardiologist or treating doctor. Seek urgent medical care for possible emergency symptoms.
Clinical information reviewed against current patient guidance from RadiologyInfo (American College of Radiology and Radiological Society of North America) and the American Heart Association.