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Four-Dimensional Computed Tomography-Guided Valve Sizing for Transcatheter Pulmonary Valve Replacement
Published on: January 20, 2022
Clinical value of computed tomography in suspected prosthetic valve dysfunction
Marco Voortman1,2, Clemens von Birgelen1,2, Daan Ties3
1Department of Cardiology, Thoraxcentrum Twente, Medisch Spectrum Twente, Koningsplein 1, 7512 KZ, Enschede, The Netherlands.
Summary
Cardiac computed tomography (CT) effectively rules out prosthetic valve dysfunction (PVD) complications with a high negative predictive value (NPV). While positive predictive value (PPV) for PVD pathologies is moderate, CT aids in identifying structural issues needing intervention.
Area of Science:
- Cardiology
- Radiology
- Medical Imaging
Background:
- Prosthetic valve dysfunction (PVD) presents diagnostic challenges and potential life threats.
- Accurate diagnosis is crucial for timely intervention and patient management.
Purpose of the Study:
- To evaluate the negative (NPV) and positive predictive value (PPV) of cardiac computed tomography (CT) for diagnosing PVD.
- To assess CT's diagnostic performance in patients with suspected PVD.
Main Methods:
- Retrospective analysis of 64 patients with prosthetic heart valves (PHVs) undergoing CT for suspected PVD.
- CT scans were assessed for periprosthetic masses, structural valve deterioration (SVD), and leaflet motion.
- Diagnostic performance evaluated using follow-up data and adverse events.
Main Results:
- CT demonstrated a 94% NPV for ruling out device-related adverse events within one year.
- Abnormal CT findings included periprosthetic masses (70%) and restricted leaflet motion (78.3% in mechanical valves).
- A 70% PPV was achieved for CT-identified abnormalities confirmed by surgery.
Conclusions:
- CT offers a high NPV, making it reliable for excluding significant PVD complications.
- CT's moderate PPV is balanced by its ability to detect structural abnormalities requiring intervention.
- Cardiac CT is a valuable tool for comprehensive assessment of suspected PVD.
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