Report Abuse. It's not exactly a substitute but it's antiviral medication that is also used to help heal out breaks of herpes and viruses related to it like shingles. Also some people don't react well to acyclovir so Famvir can be used instead. LINDSEY S Â· 5 years ago.
No MRI takes more than 60 minutes. If doctors do not suggest MRI suggest then it will take 30 minutes to 45 minutes. So the question âHow Long Does an MRI Takeâ depends on the requirements of your doctor. If your radiologist has decided for an MRI of the brain plus further requirements, such as IACs (inner auditory canals), orbits or the CCJ (Cervical Cranial Junction), then the test may take 45 minutes.
How long does it take to get MRI results depends upon the fact that which part of a body is being tested or scanned through an MRI. However, the images of an MRI or the result of an MRI scan becomes available within an hour of the test or MRI scan.ow long does it take to get MRI results also depends on how soon are the results required. It is possible that the patient is in a critical condition and the doctor requires an urgent MRI.