Doctor insights on:
Mr Brain With And Without Contrast
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
How do non contrast CT scans detect strokes? I was wondering how non contrast CT scans help diagnose strokes, since the non contrast would means that the parts of the brain with and without blood would all look the same, right?
A screening test: The earliest sign of a stoke on a ct scan is edema or swelling of the part of the brain that had the stroke. It may take several hours for this to show up on a ct scan, but ct scans are widely available 24/7, while MRI may not be. Ct can will show if the stroke is hemorrhagic, which will mean that treating the stroke with tpa (alteplase) is contraindicated.See 2 more doctor answers
Mild prominence of cortical sulci at the top of the calvarium reflecting minor involutional change. MR brain without constrast otherwise unremarkable.
MRI Result: This as with all tests should be evaluated by the ordering physician who has the patients history, exam findings and reasons for ordering the study in hand. This allows appropriate interpretation of the study.
No: Look for some other cause of your symptoms.
I experience sudden loss of depth perceptin and my vision seems flat. 2 normal brain MRIs w/o contrast. Where else should we look?
See eye MD: Loss of depth perception is uncommon. It can be due to eye or brain factors. It seems the brain factors have been eliminated. Now you should focus your attention on eye factors, like alignment issues. For this, you should see an ophthalmologist.
Maybe safer in some: Gadolinium contrast could potentially cause kidney complications on rare occasion. Mri without contrast will reveal areas of atrophy, stroke, bleeding, tumors, hydrocephalus, etc, but will not clearly show certain ms lesions, aneurysms, avm's, some inflammatory problems, so, always discuss with your doctor as to why an ordered MRI might be done in a variety of ways.See 2 more doctor answers
Usually it: Improves diagnostic accuracy and has fewer "allergies" than iodinated contrast. If I were getting a head mr, i'd for sure take it.
Early August I got a brain scan with contrast and came back normal...is it possible that now 2 months later tumor developed?
Anthing possible: But 1) while I do not know much about you, I assume that you had an indication for the (NEG) scan. 2) http://www. Cancerresearchuk. Org/cancer-info/cancerstats/types/brain/incidence/uk-brain-and-central-nervous-system-cancer-incidence-statistics#By2 about the lowest risk age group. The more common (slow growing, NON-mailgnant) type is most likely to show up (meningioma, or pituitary)See 1 more doctor answer
MRV: Mri of the brain evaluates the brain tissue for any abnormal signal, lesions, or masses. An mrv (mr venography) uses special sequences to look at the venous structures (dural venous sinuses) around the brain. The main indication for mrv is to look for a clot or stenosis. Typically this is also done with IV contrast for better image quality.
Tumors and anuerysms: A tumor may not be seen unless contrast is administered. Also, any abnormality of the arteries or veins of the brain may not be visible without contrast. Contrast improves specificity and sensitivity of the MRI and should be used when possible.
No: Noncontrasted MRI is the test of choice to radiographically diagnose Chiari's. Be aware that there is something called PHASE-CONTRAST MRI or abbreviated PC-MRI. This imaging technique can be used (and is very useful in some cases when looking at headaches associated with Chiari's) to image the malformation. It DOES NOT utilize IV-contrast though the word "contrast" is in the name of the test.
No: Imaging studies do not show "everything". For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex. Get HPV vaccine.
Works well: A non-contrast CAT scan should show presence of any significant tumor in the brain.See 1 more doctor answer
Not really: It depends on your symptoms and what disease or problem your Doctor thinks you may have. In my practice, slightly less than half of all the brain studies are given contrast.See 1 more doctor answer
Good details without: An MRI without contrast can see exquisite architectural detail of the brain but it may be having difficulty with picking up small masses.
Why could they have thought they saw something in first brain MRI then the one with contrast came back clear?
I recently had a non contrast MRI of the brain. It came back normal. Would they have seen a tumor if I had one?
Brain MRI in august was normal, getting another one next week for mri with contrast, what are the chances this one will be abnormal with the contrast?
Unable to answer. The: Answer depends on your condition & what the doctor thinks is the diagnosis. If the original MRI truly didn't show an abnormality, then 99% of diagnoses won't show just because you repeat with contrast. (U run the risk of contrast exposure for no reason). Your question is complex. Use HealthTap Prime or talk to ur prescribing doctor about alternative ways to get diagnosed based on symptoms, not MRI
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