What is the role of thick-slap MIP in stenosis grading on coronary computed tomography angiography (CCTA)?

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

Answer

Several areas may be difficult to evaluate due to curvature, and additional review of these regions using thick-slap MIP may be helpful, as follows:

  • Distal segment of the RCA and origin of the PDA

  • Origin of the first diagonal branch

  • Distal circumflex near the origin of the obtuse marginal

A stenosis should always have an associated visible plaque, calcified or noncalcified. This is helpful in differentiating stenosis from artifactual apparent narrowing.


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