New hybrid reformations of peripheral CT angiography: do we still need axial images?

Clin Imaging. Jul-Aug 2015;39(4):603-7. doi: 10.1016/j.clinimag.2015.03.005. Epub 2015 Mar 20.


Purpose: To quantify the detectability of peripheral artery stenosis on hybrid CT angiography (CTA) reformations.

Methods: Hybrid reformations were developed by combining multipath curved planar reformations (mpCPR) and maximum intensity projections (MIP). Fifty peripheral CTAs were evaluated twice: either with MIP, mpCPR and axial images or with hybrid reformations only. Digital subtraction angiography served as gold standard.

Results: Using hybrid reformations, two independent readers detected 88.0% and 81.3% of significant stenosis, respectively. However, CTA including axial images detected statistically significant more lesions (98%).

Conclusion: Peripheral CTA reading including axial images is still recommended. Further improvement of these hybrid reformations is necessary.

Keywords: CT angiography; Peripheral arterial occlusive disease; Postprocessing; Three-dimensional reformations.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Angiography, Digital Subtraction / methods*
  • Arterial Occlusive Diseases / diagnostic imaging*
  • Constriction, Pathologic / diagnostic imaging
  • Female
  • Humans
  • Male
  • Middle Aged
  • Retrospective Studies
  • Sensitivity and Specificity
  • Tomography, X-Ray Computed / methods