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Updated: Jun 5, 2026

Four-Dimensional Computed Tomography-Guided Valve Sizing for Transcatheter Pulmonary Valve Replacement
Published on: January 20, 2022
Comprehensive evaluation of patients with suspected prosthetic heart valve disorders using MDCT
Wei-Lin Tsai1, I-Chen Tsai, Min-Chi Chen
1Department of Radiology, Taichung Veterans General Hospital, Taichung Harbor Rd., No. 160, Sec. 3, Taichung 407, Taiwan.
Objective:
Early diagnosis of prosthetic valve disorders is very important in reducing morbidity and mortality of patients with a replaced heart valve. Recently, MDCT has become an important noninvasive problem-solving tool in clinical practice. This article will introduce the scanning technique, interpretation algorithm, and image findings of many valvular and extravalvular diagnoses.
Conclusion:
With proper scanning technique and interpretation, MDCT can be a powerful technique for prosthetic heart valve evaluation.
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Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...

