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Metal Artifact–Free and Dose-Efficient Computed Tomography Imaging of a Cardiac Prosthetic Valve Using Spectral Shaping of the X-ray Beam

A Case Report

Schabel, Christoph, MD*†; Sekaran, Nishant K., MD; Wang, Andrew, MD; Hurwitz, Lynne, MD*

Journal of Computer Assisted Tomography: May/June 2018 - Volume 42 - Issue 3 - p 467–468
doi: 10.1097/RCT.0000000000000692
Thoracic and Cardiovascular Imaging

Bioprosthetic valve (BPV) thrombosis can be challenging to diagnose with cardiac computed tomography owing to metal artifacts of the BPV. In this case report, an optimized metal artifact reduction protocol using a third-generation dual-source multidetector computed tomographic scanner with high kVp (Sn150kVp) and tin (Sn) filtration and high temporal resolution yielded high-quality, artifact-free, dynamic images of a thrombosed mitral BPV.

From the Departments of *Radiology,

Cardiology, Duke University Medical Center, Durham, NC; and

Department of Diagnostic and Interventional Radiology, University Hospital of Tuebingen, Tuebingen, Germany.

Received for publication August 25, 2017; accepted August 31, 2017.

Correspondence to: Christoph Schabel, MD, Department of Radiology, Duke University Hospital, 2301 Erwin Rd, Box 3808, 27710, Durham, NC (e-mail:

The authors declare no conflict of interest.

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