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.
But usually, the result of an MRI scan comes within 24 hours and it is also interpreted within 24 hours by a specialized radiologist and similarly,if the result of an MRI scan comes within 24 hours, then definitely, those results can help the radiologist in analyzing that who took the test or who ordered for the test of an MRI scan.