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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

Published on: June 3, 2018

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Computed Tomography Features of Cuspal Thrombosis and Subvalvular Tissue Ingrowth after Transcatheter Aortic Valve

Hyun Jung Koo1, Jooae Choe1, Do-Yoon Kang2

  • 1Department of Radiology and Research Institute of Radiology, Cardiac Imaging Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.

The American Journal of Cardiology
|December 17, 2019
PubMed

Insights

Post-transcatheter aortic valve implantation (TAVI) CT scans reveal common findings like hypoattenuating subvalvular thickening (HAST) and hypoattenuating leaflet thickening (HALT). Longer implant duration, hypertension, and HAST are linked to HALT after TAVI.

Area of Science:

  • Cardiology
  • Radiology
  • Medical Imaging

Background:

  • Post-transcatheter aortic valve implantation (TAVI) computed tomography (CT) findings require further elucidation beyond hypoattenuating leaflet thickening (HALT).
  • Understanding cardiac CT findings after TAVI is crucial for patient management and assessing valve performance.

Purpose of the Study:

  • To describe cardiac CT findings following TAVI.
  • To investigate factors associated with hypoattenuating leaflet thickening (HALT).

Main Methods:

  • Retrospective analysis of post-TAVI cardiac CT scans from 138 patients.
  • Review of CT findings including hypoattenuating subvalvular thickening (HAST), sinus of Valsalva thrombus, HALT, and leaflet motion limitation.
  • Logistic regression analysis to identify factors associated with HALT.

Main Results:

  • HAST (23%) and HALT (18%) were common findings on post-TAVI CT.
  • TAVI device implant duration (OR 1.5), hypertension (OR 0.2), and HAST (OR 4.9) were significantly associated with HALT.
  • Longer implant durations were observed in patients with HAST, HALT, or leaflet motion limitation.

Conclusions:

  • Cardiac CT demonstrates various findings after TAVI, including HAST, HALT, thrombus, and leaflet motion abnormalities.
  • Implant duration, hypertension, and HAST are significant predictors of HALT.
  • These findings aid in the comprehensive assessment of TAVI outcomes using cardiac CT.

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