MRI angiography is a noninvasive imaging method that uses magnetic fields and radiofrequency pulses to create detailed pictures of blood vessels. It can be done with or without intravenous gadolinium contrast (e.g., time-of-flight or phase-contrast techniques) to detect aneurysms, stenosis, occlusion, or vascular malformations. It avoids ionizing radiation and aids diagnosis and treatment planning.

An MRI can image virtually any body part: brain and spinal cord, neck, chest and heart, abdomen and pelvis, liver, kidneys, pelvic organs, breasts, joints (shoulder, knee, hip), bones and soft tissues, and blood vessels (MR angiography). Scans are done in a dedicated MRI suite where the patient lies on a motorized table that slides into the scanner’s bore for targeted imaging.

Magnetic resonance angiography (MRA) can visualize blood vessels and may detect larger blockages, but it has limitations for coronary artery disease: lower spatial resolution and motion sensitivity make it less reliable than CT coronary angiography or invasive coronary angiography. MRA is useful when avoiding radiation or iodine contrast; additional functional tests or invasive angiography are often needed to confirm coronary blockages.

Confirm technique (contrast-enhanced vs TOF) and compare with prior imaging. Assess vessel continuity, caliber, stenosis or occlusion, aneurysm, dissection, and collateral flow. Quantify degree of narrowing (percent), lesion location and length, and distal perfusion. Note flow-related artifacts or timing issues. Correlate with clinical signs and state actionable conclusions: significant stenosis, occlusion, aneurysm, or need for further angiography/intervention.

Angiography is usually not severely painful. Local anaesthetic numbs the insertion site, so you may feel pressure, pulling, or mild discomfort when the catheter is advanced, and a brief warm flushing or metallic taste when contrast dye is injected. Sedation can reduce anxiety. Afterwards you may have soreness, bruising, or minor pain at the access site; persistent or severe pain should be reported promptly.

CT angiography is faster, widely available, and gives high-resolution images—best for acute trauma, pulmonary embolism, and coronary arteries—but uses ionising radiation and iodinated contrast (risk in renal impairment). MR angiography avoids radiation and better characterises soft tissue and intracranial or peripheral vessels, can sometimes be done without contrast, but is slower, less available, costlier, and limited by implants or claustrophobia.