Blurry vision, ghost images and nighttime halos around lights all can be warning signs of eye problems. 1  A flood of spots and floaters in your field of vision. 2  A sensation that a dark curtain has settled across your field of view. 3  Sudden eye pain, redness, nausea and vomiting.  Double vision, double images or ghost images.
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.
MRA stands for Magnetic Resonance Angiogram. MRA is a new technique to look and see whether arteries are open, narrowed or closed. It avoids the need to give a patient intravenous contrast as in a standard angiogram, since there are side effects to contrast. Patent simply means âopenâ.RA stands for Magnetic Resonance Angiogram. MRA is a new technique to look and see whether arteries are open, narrowed or closed. It avoids the need to give a patient intravenous contrast as in a standard angiogram, since there are side effects to contrast. Patent simply means âopenâ.