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Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation
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Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation

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Diagnostic accuracy of multidetector computed tomography coronary angiography in 325 consecutive patients referred

Daniele Andreini1, Gianluca Pontone2, Saima Mushtaq2

  • 1Centro Cardiologico Monzino, IRCCS Milan, Italy; Department of Clinical Sciences and Community Health, Cardiovascular Section, University of Milan, Milan, Italy.

American Heart Journal
|September 1, 2014
PubMed

Insights

Multidetector computed tomography coronary angiography (MDCT-CA) accurately evaluates coronary arteries in transcatheter aortic valve replacement (TAVR) patients. This imaging technique effectively rules out significant stenosis, in-stent restenosis, and bypass graft disease.

Area of Science:

  • Cardiovascular Imaging
  • Interventional Cardiology
  • Radiology

Background:

  • Multidetector computed tomography (MDCT) is crucial for assessing the valve annulus and iliofemoral vessels in transcatheter aortic valve replacement (TAVR) candidates.
  • Diagnostic performance data for MDCT coronary angiography (MDCT-CA) in this patient population are limited.
  • Accurate coronary artery assessment is vital for TAVR planning and management.

Purpose of the Study:

  • To evaluate the diagnostic performance of MDCT coronary angiography (MDCT-CA) for coronary artery assessment prior to TAVR.
  • To compare MDCT-CA findings with invasive coronary angiography as the gold standard.

Main Methods:

  • A total of 325 patients undergoing TAVR were included, comprising those with no prior revascularization, previous coronary stenting, and previous coronary artery bypass graft (CABG).
  • MDCT-CA was performed using the same dataset as standard MDCT for aortic annulus evaluation.
  • Evaluability and diagnostic accuracy of MDCT-CA were assessed against invasive coronary angiography.

Main Results:

  • MDCT-CA achieved 95.6% evaluability for native coronaries, with beam-hardening artifact being the primary limitation.
  • For native coronaries, MDCT-CA demonstrated high sensitivity (91%) and specificity (99.2%) for detecting significant stenosis (≥50%).
  • MDCT-CA showed 82.1% evaluability for coronary stents, with sensitivity (94.1%) and specificity (86.7%) for in-stent restenosis detection. All CABGs were accurately assessed.

Conclusions:

  • MDCT-CA is a reliable tool for ruling out significant native coronary artery stenosis in TAVR patients.
  • MDCT-CA effectively identifies significant in-stent restenosis and bypass graft disease.
  • The findings support the utility of MDCT-CA as part of the pre-TAVR evaluation.
Abstract

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