How is stenosis graded using coronary computed tomography angiography (CCTA)?

Updated: Dec 21, 2017
  • Author: Eugene C Lin, MD; Chief Editor: Eugene C Lin, MD  more...
  • Print


There are many different methods to grade the degree of stenosis, including the following:

  • Visual assessment

  • Manually determined diameter or cross-sectional area on multiplanar reformats perpendicular to the median centerline of the vessel ("end-on" view)

  • Diameter on maximum intensity projection (MIP) images parallel to the long axis of the vessel

  • Software calculation of diameter or area [8]

Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!