MR Angiography (MRA) MR angiography (MRA) uses a powerful magnetic field, radio waves and a computer to evaluate blood vessels and help identify abnormalities or diagnose atherosclerotic (plaque) disease.
Dial a caller ID block code before the phone number. In the USA, dial *67 proceeding the number. In the UK, dial 141. So for example if you need to call 212-555-5555, Dial *67â¦-212-555-555 instead. Your caller will see a message that says caller ID blocked..
1 Lift your phone's handset and listen for the dial tone. 2  Press *67.  When you hear the confirmation tone, dial the number of the person you are calling. Your Caller ID information will be blocked to the person you are calling.