Finding the right tests…
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Finding the right tests…
MRI
MRI ANGIO is a magnetic resonance angiography scan ordered without one named vessel attached to it, unlike the carotid, renal, or portal vessel studies in this catalogue. It uses a strong magnet and radio waves, not X-rays, to picture blood vessels, without threading a catheter into an artery. Some studies need an injected gadolinium dye for a sharper picture, but many vessels can be imaged well without any dye at all, a genuine advantage over CT angiography, which always needs contrast. Your doctor requests this general version when a vascular concern hasn't been narrowed to one specific vessel group yet, and the exact coverage depends on what's written on the request.
This scan images whichever blood vessels your doctor has requested, checking for narrowing, blockage, an aneurysm, or an abnormal vessel shape. Because MRI ANGIO isn't tied to one named vessel group, the coverage and any contrast use are set by your doctor's specific request rather than a fixed protocol, so ask what your particular scan covers.
Magnetic resonance angiography, or MRA, builds pictures of blood vessels using a magnetic field and radio waves rather than X-rays. It doesn't need a catheter placed inside an artery the way older, invasive angiography does, which is why doctors reach for it as a first look at vessels in many parts of the body.
Other MRA studies in this catalogue are built around one named vessel group, like the arteries feeding the brain or the kidneys. MRI ANGIO covers a case where the vessel or region hasn't been narrowed down to one of those named studies, so the scan follows whatever your doctor has specified rather than a single fixed protocol.
Some vessels image clearly with an injected gadolinium dye, which sharpens the picture of blood flow. Others can be captured well without any dye, using techniques that rely on the natural movement of blood itself as the source of contrast. Whether your scan needs one depends on the vessels involved and what your doctor is looking for, not on a rule that applies to every MRA.
Ask your doctor which vessels this particular scan is checking and why, since MRI ANGIO on its own doesn't specify a body region the way the more targeted studies do.
It checks whichever blood vessels your doctor has specified on the request, since this entry isn't tied to one named vessel group. The scan looks for narrowing, blockage, an aneurysm, or an unusual vessel shape in that area.
MRI ANGIO covers cases where a vascular concern hasn't been narrowed down to one of the specific studies elsewhere in this catalogue, like the carotid or renal vessels. Your doctor's request determines exactly what gets imaged.
It depends on the vessels being checked. Many vessels can be imaged well without any dye, using techniques based on blood flow itself, while others need an injected gadolinium dye for a clearer picture.
MRI angiography uses a magnet and radio waves rather than X-rays, so it doesn't involve ionizing radiation, and some studies can be done without any contrast at all. CT angiography always needs an iodine-based contrast dye and does use radiation.
This page is general information about the test, not medical advice. Your own report's reference ranges apply — please discuss your results with your doctor.
No. The scan itself is painless, though you'll need to stay still inside the scanner, and a contrast injection, if used, may cause brief coolness at the injection site.
There's no single preparation that applies to every MRI ANGIO study, since it depends on the vessels being checked. Ask your doctor or the centre directly what they'd like you to do beforehand.
Studies like the carotid, vertebral, or renal angiography scans are built around one named vessel group. MRI ANGIO is used when that hasn't been narrowed down yet, so the coverage follows your doctor's specific request instead.