Limits...
Prosthetic heart valve assessment with multidetector-row CT: imaging characteristics of 91 valves in 83 patients.

Habets J, Symersky P, van Herwerden LA, de Mol BA, Spijkerboer AM, Mali WP, Budde RP - Eur Radiol (2011)

Bottom Line: 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.Currently implanted PHVs have good image quality on MDCT and are suitable for MDCT evaluation.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, UMC Utrecht, P.O. Box 85500, E01.132, 3508, GA, Utrecht, The Netherlands. J.Habets@umcutrecht.nl

ABSTRACT

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 CT examinations (66 cardiac, 18 limited-dose 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.

Show MeSH
Björk-Shiley tilting disc in aortic position. This PHV type and the periprosthetic anatomy are not suitable for MDCT diagnostic assessment due to severe artefacts
© Copyright Policy
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3101341&req=5

Fig4: Björk-Shiley tilting disc in aortic position. This PHV type and the periprosthetic anatomy are not suitable for MDCT diagnostic assessment due to severe artefacts

Mentions: The median image quality scores per PHV manufacturer type and PHV design type are shown in Tables 1 and 2. MDCT characteristics of different PHVs are illustrated in Figs. 2, 3, 4, 5 and 6.Table 1


Prosthetic heart valve assessment with multidetector-row CT: imaging characteristics of 91 valves in 83 patients.

Habets J, Symersky P, van Herwerden LA, de Mol BA, Spijkerboer AM, Mali WP, Budde RP - Eur Radiol (2011)

Björk-Shiley tilting disc in aortic position. This PHV type and the periprosthetic anatomy are not suitable for MDCT diagnostic assessment due to severe artefacts
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3101341&req=5

Fig4: Björk-Shiley tilting disc in aortic position. This PHV type and the periprosthetic anatomy are not suitable for MDCT diagnostic assessment due to severe artefacts
Mentions: The median image quality scores per PHV manufacturer type and PHV design type are shown in Tables 1 and 2. MDCT characteristics of different PHVs are illustrated in Figs. 2, 3, 4, 5 and 6.Table 1

Bottom Line: 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.Currently implanted PHVs have good image quality on MDCT and are suitable for MDCT evaluation.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, UMC Utrecht, P.O. Box 85500, E01.132, 3508, GA, Utrecht, The Netherlands. J.Habets@umcutrecht.nl

ABSTRACT

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 CT examinations (66 cardiac, 18 limited-dose 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.

Show MeSH