Actual expansion of a transcatheter heart valve (THV) might differ from nominal, particularly during nonaortic valve-in-valve for a degenerated bioprosthetic surgical heart valve (SHV). This pilot study compared THV expansion measured using large-field-of-view intravascular ultrasound (IVUS) vs. multi-slice computed tomography (MSCT) and assessed the correlation between THV dimensions and transvalvular gradients.
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Kalińczuk et al. (2024) studied this question.
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