Spectrum of pulmonary valve morphology and its relationship to pulmonary trunk in tetralogy of Fallot

The Indian Journal of Radiology & Imaging
Binita R ChackoK Reka

Abstract

Tetralogy of Fallot (TOF) is a complex congenital heart disease with anatomic variations. Although the pulmonary valve in TOF is abnormal, it has not been studied well, especially on newer imaging modalities such as multidetector computed tomography (CT), which gives excellent anatomic detail. The aim of this study was to assess the morphology of pulmonary valve in TOF on CT and evaluate its association with the degree of hypoplasia of infundibulum and pulmonary trunk. The cardiac CT scans of 30 patients with TOF were reviewed to evaluate the morphology of the pulmonary valve, infundibulum, and pulmonary arteries. Fisher's exact test was performed to examine the association between pulmonary valve morphology and degree of hypoplasia of the infundibulum and pulmonary trunk. 16.7% of patients with TOF had pulmonary atresia. The prevalence of tricuspid, bicuspid, and absent valves were 10%, 53.3% and 6.7%, respectively. In another 13.3% of patients, although valve tissue was present, exact morphology could not be determined on CT. The commissures of 62.5% of the bicuspid valves were at 12 o'clock and 6 o'clock or slightly off the midline. There was statistically significant association between valve morphology and degree of infund...Continue Reading

Citations

Oct 9, 2018·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Shu-Shui WangGang Xu
Jun 12, 2020·Cardiology in the Young·Mansoor MoazenzadehMaryam Aliramezany

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