Doctor insights on:
Mr Iac With And Without Contrast
To rule in or out cerebral aneurysm, usually is mri/mra test done with gadolinium contrast or without.Would mr/mra test with contrast be more accurate?
MR angiography: Can probably detect most aneurysms, and it is always done with gadolinium type contrast. But it is probably not as accurate as an arteriogram, which is more dangerous. Ask your doctor for specific recommendation. ...Read more
Had MRI of iac without contrast could this pick up a brain tumour or does it just look at inner ear? Scan results were clear? Still have symptoms.
If brain mr/mra with/without contrast detects 2 mm pca infundibula, can it also detect 2 to 3 mm brain arterial aneurysm if there is one in same study
It should.: If the study has enough fine (spatial) resolution to see the infundibulum then it should be able to see an aneurysm. Should is the key word. There are many reasons on MRI that something may or may not be seen and the arteriogram (angiogram) is the real final diagnostic study. ...Read more
Will an MRI of the brain and IAC without contrast show my sinuses? My ENT ordered this exam due to severe nasal congestion and facial pressure.
See below: Mri with contrast includes gadolinium dye injected in a vein. It depends on why you are having the test. Some things are seen without contrast. Others are better demonstrated with contrast. Your doctor will understand which study should be requested. If your kidney function is poor, you will not be able to receive IV contrast. ...Read moreSee 1 more doctor answer
An IV injection: A MRI with contrast is done just after a small injection of mr contrast containing a compound with gadolinium in it. Before receiving the contrast you will be screened to rule out underlying kidney disease which can increase the risk of a rare but significant condition called nephrogenic systemic fibrosis. There is typically no sensation from the injection. ...Read moreSee 1 more doctor answer
Why would dr order an MRI with and without contrast all at once? Wouldn't one MRI with contrast be sufficient ?
MRI unlocked: As a routine when obtaining an MRI with contrast we obtain contrast images prior to contrast administration so it can be determined what is enhancing. Routine contrast exams are always ordered without and with contrast. Noncontrast exams are ordered non contrast, and only supplemental followup to an incomplete exam would only be ordered with contrast. ...Read moreSee 1 more doctor answer
Why would a MRI of the back be ordered without, and with contrast? What is the contrast enhancing?
It depends: It depends what they are looking for. It is common to perform a spine MRI without/with contrast. If you had prior back surgery, it will help differentiate post surgical scarring(which enhances) from other processes like disc extrusion. Inflammatory and malignant abnormalities will also generally enhance. Vascular abnormalities will enhance. ...Read more
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