Application of MPVR and TL-VR with 64-row MDCT in neonates with congenital EA and distal TEF

摘要

AIM:To assess the application of multiple planar volume reconstruction(MPVR) and three-dimensional (3D) transparency lung volume rendering(TL-VR) with 64-row multidetector-row computed tomography (MDCT) in neonates with congenital esophageal atresia (EA) and distal tracheoesophageal fistula(TEF).METHODS:Twenty neonates(17 boys,3 girls) with EA and distal TEF at a mean age of 4.6 d(range 1-16 d) were enrolled in this study.A helical scan of 64-row MDCT was performed at the 64 mm×0.625 mm collimation.EA and TEF were reconstructed with MPVR and TL-VR,respectively.Initial diagnosis of EA was made by chest radiography showing the inserted catheter in the proximal blind-ended esophageal pouch.Manifestations of MDCT images were compared with the findings at surgery.RESULTS:MDCT showed the proximal and distal esophageal pouches in 20 cases.No significant difference was observed in gaps between the proximal and distal esophageal pouches detected by MPVR and TLVR.The lengths of gaps between the proximal and distal esophageal pouches detected by MPVR and TL-VR correlated well with the findings at surgery(R=0.87,P<0.001).The images of MPVR revealed the orifice of TEF in 13 cases,while TL-VR images showed the orifice of TEF in 4 cases.CONCLUSION:EA and distal TEF can be reconstructed using MPVR and TL-VR of 64-row MDCT,which is a noninvasive technique to demonstrate the distal esophageal pouches and inter-pouch distance in neonates with EA and distal TEF.