What is the role of multiplanar reconstruction (MPR) in 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

MPRs can be performed at oblique planes to the body or the coronary arteries. For coronary artery imaging, a curved MPR technique is usually used where the reconstruction plane is locked onto the target vessel. This requires a manual or automatic centerline to be drawn along the vessel. Curved MPR images can often be difficult to obtain if the centerline is difficult to trace, for reasons such as motion artifact, poor contrast opacification, or dense calcifications. The curved MPR can be unfolded so that the vessel appears to be straight ("ribbon view"). Note that a single curved MPR may not adequately display eccentric lesions, and correlation with orthogonal MPR views, such as an end-on view perpendicular to the vessel, is necessary.

Curved MPR: Curved multiplanar reconstruction (MPR Curved MPR: Curved multiplanar reconstruction (MPR) image of a left anterior descending (LAD) artery stenosis (arrow).
"Ribbon" multiplanar reconstruction (MPR): "Ribbon "Ribbon" multiplanar reconstruction (MPR): "Ribbon" MPR image of a left anterior descending (LAD) artery stenosis (arrow).

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