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Updated: Sep 16, 2025

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation
Published on: June 3, 2018
Cardiac CT in Infective Aortic Prosthetic Valve Endocarditis
Marwan Nadiri1, Ana Falticeanu1, Olivier Lebecque1
1Université catholique de Louvain, CHU UCL Namur, Department of Radiology, 1 Avenue Dr G Thérasse, 5530 Yvoir, Belgium.
Cardiac computed tomography angiography is valuable for prosthetic valve infective endocarditis when transesophageal echocardiography is not feasible. This imaging technique offers comparable sensitivity for detecting critical complications like abscesses and pseudoaneurysms.
Area of Science:
- Cardiology
- Radiology
- Infectious Diseases
Background:
- Prosthetic valve infective endocarditis (PVIE) is a serious complication requiring accurate diagnosis.
- Transesophageal echocardiography (TOE) is a primary imaging modality for PVIE.
- Limitations of TOE include patient contraindications, heavy calcifications, and prosthetic valve interference.
Purpose of the Study:
- To evaluate the utility of cardiac computed tomography angiography (CCTA) in diagnosing PVIE.
- To compare CCTA's effectiveness with TOE in specific clinical scenarios.
Main Methods:
- Review of PVIE cases where CCTA was utilized.
- Comparison of CCTA findings with echocardiographic and surgical/autopsy data.
- Focus on CCTA's ability to detect abscesses and pseudoaneurysms.
Main Results:
- CCTA demonstrated high sensitivity in detecting abscesses and pseudoaneurysms in PVIE patients.
- CCTA provided valuable diagnostic information when TOE was contraindicated or limited.
- Sensitivity for detecting key complications was at least equivalent to TOE.
Conclusions:
- Cardiac computed tomography angiography is a crucial alternative or adjunct to TOE for PVIE diagnosis.
- CCTA offers comparable diagnostic performance for abscesses and pseudoaneurysms.
- CCTA enhances diagnostic capabilities in challenging PVIE cases.
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