CARDIAC MAGNETIC RESONANCE IMAGING (CMR) is a MRI imaging study of the relevant body part. No blood, urine, or other body fluid sample is required.
A radiographer positions you in the imaging machine; a radiologist interprets the images and writes a report with technique, findings, and impression.
Inform staff if you are pregnant, have contrast allergy, or have metal implants. Do not self-diagnose from the report wording alone.
About this test
What is CARDIAC MAGNETIC RESONANCE IMAGING (CMR)?
CARDIAC MAGNETIC RESONANCE IMAGING (CMR) uses MRI to visualize internal structures of the relevant body part—bones, joints, organs, or soft tissues.
It is not a blood test. Images are acquired and interpreted by a radiologist.
Why is CARDIAC MAGNETIC RESONANCE IMAGING (CMR) ordered?
Doctors order it for pain, injury, chronic symptoms, pre-operative planning, or follow-up affecting the relevant body part.
Blood tests show chemistry; imaging shows anatomy—they complement each other.
Who may need this test?
Anyone with relevant symptoms, trauma, or abnormal findings related to the relevant body part, as advised by a doctor.
Inform staff if pregnant—radiation protocols differ for X-ray and CT.
How it is done
Is blood required?
No. CARDIAC MAGNETIC RESONANCE IMAGING (CMR) is imaging of the relevant body part; no blood or urine sample is collected.
How is it performed?
MRI uses a strong magnet to image the relevant body part in detail. Ear protection is provided.
Report any implants or claustrophobia to staff beforehand.
How long does it take?
MRI: about 20–60 minutes.
Is it painful?
Usually painless—you must remain still briefly.
MRI is noisy; mention claustrophobia beforehand.
How should I prepare?
Usually no special prep—wear comfortable clothes, remove metal, bring prior imaging for comparison.
What if I am pregnant?
Shielding and justified indications minimize radiation risk for X-ray and CT.
Ultrasound or MRI may be considered as alternatives depending on clinical need.
Report and results
What does the report contain?
Technique, detailed findings, and an impression summary.
'Normal' usually means no acute abnormality; other phrases may suggest follow-up.
When will results be ready?
Formal report usually within 24–72 hours; films may be available sooner.
Does abnormal always mean serious disease?
Not always. Some findings are incidental or chronic.
Your doctor interprets the report with your clinical picture.
Risks and advice
Are there risks?
Radiation exposure is minimized using modern equipment and justified indications.
What to do after the test?
Share the report with your treating doctor for treatment planning.
Contrast or pregnancy concerns
Radiation studies are minimized in pregnancy; ultrasound or MRI may be alternatives.
Report metal implants or pacemakers for MRI safety.
More Questions & Answers
Does CARDIAC MAGNETIC RESONANCE IMAGING (CMR) require blood?
No—it is imaging of the relevant body part, not a blood test.
Fasting for CARDIAC MAGNETIC RESONANCE IMAGING (CMR)?
Plain X-ray typically requires no fasting.
Report time for CARDIAC MAGNETIC RESONANCE IMAGING (CMR)?
Usually 1–3 days.
Pregnancy or contrast?
Inform staff if pregnant.