What is the difference between a brain mri and mra? Is the difference based on whether or not contrast is used? Ive had a brain mri with contrast to rule out tumors and any other serious issues that may be related to my constant head pressure/aches, floaters, and other symptoms.
The doctor wants to schedule a mra with and without contrast. If both use the same mri tunnel for the procedure, how do they vary?
I understand that mra's focus more on veins and arteries to help detect blockages and anurysems (sp), but if I had something like this could the mri with contrast detected it too?
Magnetic resonance imaging (MRI) is a noninvasive medical test that helps physicians diagnose and treat medical conditions.
MR imaging uses a powerful magnetic field, radio frequency pulses and a computer to produce detailed pictures of organs, soft tissues, bone and virtually all other internal body structures. The images can then be examined on a computer monitor, printed or copied to CD. MRI does not use ionizing radiation (x-rays).
MR angiography (MRA) is used to examine blood vessels in key areas of the body, including the:
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