microangiography

[mī′krō-ăn′jē-ŏgrə-fē]
n.
  1. Radiography of the minute blood vessels of an organ obtained by injection of a contrast medium and enlargement of the resulting radiograph.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.