Tao Guowei, Lu Gang, Zhan Xinfeng, Li Jun, Cheng Lin, Lee Kingyin, Poon Wai Sang
Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, China; Division of Neurosurgery, The Chinese University of Hong Kong, Hong Kong, China.
J Clin Ultrasound. 2013 Nov-Dec;41(9):525-31. doi: 10.1002/jcu.22084. Epub 2013 Aug 27.
To characterize the cavum septum pellucidum et vergae (CSPV) in normal fetuses in the second to third trimester.
The cavum septum pellucidum (CSP) and CSPV were investigated in 322 uncomplicated singleton pregnancies from 25 to 39 weeks' gestation. Visualization rate, width, and morphology of both CSP and cavum vergae (CV) were assessed by ultrasound and MRI.
The CSP and CSPV visualization rates were 100% and 7.8% (25/322), respectively. The mean widths were 6.3 ± 1.2 mm (3.4-10 mm) and 6.7 ± 1.0 mm (5.1-9 mm), respectively, with no significant correlation between width and gestational age (r = -0.108, p > 0.05 and r = -0.182, p > 0.05, respectively). In CSPV fetuses, the CV to CSP ratio was 1.004 ± 0.018 (0.967-1.033). All CSPVs were rectangular in the transverse plane and extended posteriorly beyond the midpoint of the brain.
Common features of CSPVs include (1) a rectangular morphology, (2) communication between the two cavities, (3) a CV width within the normal range for CSP, and (4) a CV-CSP ratio of 1. These findings may help distinguish normal from abnormal CSPV.
描述孕中期至晚期正常胎儿透明隔腔及Vergae腔（CSPV）的特征。
对322例孕25至39周单胎妊娠且无并发症的孕妇进行透明隔腔（CSP）和CSPV检查。通过超声和磁共振成像（MRI）评估CSP和Vergae腔（CV）的显示率、宽度及形态。
CSP和CSPV的显示率分别为100%和7.8%（25/322）。平均宽度分别为6.3±1.2mm（3.4 - 10mm）和6.7±1.0mm（5.1 - 9mm），宽度与孕周之间无显著相关性（r分别为 - 0.108，p>0.05和r为 - 0.182，p>0.05）。在CSPV胎儿中，CV与CSP的比值为1.004±0.018（0.967 - 1.033）。所有CSPV在横切面上呈矩形，向后延伸超过脑中点。
CSPV的共同特征包括：（1）矩形形态；（2）两腔相通；（3）CV宽度在CSP的正常范围内；（4）CV - CSP比值为1。这些发现可能有助于区分正常与异常CSPV。
