Prosthetic heart valve assessment with multidetector-row CT: imaging characteristics of 91 valves in 83 patients
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Jesse Habets & Petr Symersky & Lex A. van Herwerden & Bas A. J. M. de Mol & Anje M. Spijkerboer & Willem P. Th. M. Mali & Ricardo P. J. Budde
- چاپ و سال / کشور: 2011
Description
Objectives Multidetector CT (MDCT) has shown potential for prosthetic heart valve (PHV) assessment. We assessed the image quality of different PHV types to determine which valves are suitable for MDCT evaluation. Methods All ECG-gated CTs performed in our institutions since 2003 were reviewed for the presence of PHVs. After reconstruction in 3 specific PHV planes, image quality of the supravalvular, perivalvular, subvalvular and valvular regions was scored on a four-point scale (1=non-diagnostic, 2= moderate, 3=good and 4=excellent) by two independent observers. Results Eighty-four CTexaminations (66 cardiac, 18 limiteddose aortic protocols) of 83 patients with a total of 91 PHVs in the aortic (n=71), mitral (n=17), pulmonary (n=1) and tricuspid (n=2) position were included. CT was performed on a 16-slice (n=4), 64-slice (n=28) or 256-slice (n=52) MDCT system. Median image quality scores for the supra-, peri- and subvalvular regions and valvular detail were (3.5, 3.3, 3.5 and 3.5, respectively) for bileaflet PHV; (3.0, 3.0, 3.5 and 3.0, respectively) for Medtronic Hall PHV; (1.0, 1.0, 1.0 and 1.0, respectively) for Björk-Shiley and Sorin monoleaflet PHV and (3.5, 3.5, 4.0 and 2.0 respectively) for biological PHV. Conclusion Currently implanted PHVs have good image quality on MDCT and are suitable for MDCT evaluation.
Eur Radiol (2011) 21:1390–1396 DOI 10.1007/s00330-011-2068-8 Received: 18 October 2010 / Revised: 26 November 2010 / Accepted: 12 December 2010 / Published online: 29 January 2011