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.
The scan can take between 10 minutes to over an hour to complete. This depends on the part of the body being imaged and what type of MRI is required to show the information. Before the scan begins, the radiographer will tell you how long the scan takes, so you know what to expect.here are no after effects of the MRI itself. You will be able to carry on your day as planned once the test has been completed. If you require sedation for the scan, the MRI facility will give clear instructions on what to do before and after the scan.