1 osmosis The movement of water molecules across a partially-permeable membrane from a region of low solute concentration to a region of high solute concentration. 2  partially permeable Also called semi-permeable.
MRI Scans Explained. MRI (Magnetic Resonance Imaging) scanning is a medical investigation that uses an exceptionally strong magnet and radio frequency waves to generate image of your body. An MRI scan is one of the most sophisticated diagnostic tools available to help a referring clinician understand the cause of your particular health issue. By scanning the relevant sector(s) of a patientâs body, an MRI scan can help to diagnose the following: most ailments of the brain, including tumours and dementias.
Magnetic resonance imaging (MRI) is a radiological study that obtains images with magnets and radio waves. Unlike X-rays and CT scans, MRI uses no radiation. There are three types of MRI machines: closed, open and standing. Closed and open are most commonly used. Closed MRIs are the oldest type of MRI machines. During the procedure, the patient lies down on a table, which slides into a large tube. The patient is asked to lie very still during the test.