Behrendt Nicholas, Zaretsky Michael V, West Nancy A, Galan Henry L, Crombleholme Timothy M, Meyers Mariana L
a Department of Obstetrics and Gynecology , University Colorado Denver , Aurora , CO , USA.
b Colorado Institute for Maternal and Fetal Health , Aurora , CO , USA.
J Matern Fetal Neonatal Med. 2017 Feb;30(3):298-301. doi: 10.3109/14767058.2016.1171310. Epub 2016 Apr 19.
To evaluate whether fetal brain lateral ventricle measurements differ between ultrasound (US) and MRI.
We evaluated 115 fetuses with US and MRI performed within 24 h of each other. Ventricular measurements were performed in the axial plane at the level of the atria for both modalities and the right and left ventricles were evaluated separately. We compared mean measurements; mean differences, association with gestational age (GA), association with the presence of a brain anomaly, and agreement between MRI and US.
The LV and RV were measured in 65 and 64 cases, respectively. LV and RV size estimates were significantly greater when measured by MRI compared with US (p < 0.001). Therefore, LV and RV were 0.87 mm and 0.89 mm larger in MRI versus US, respectively. Neither GA at measurement or presence/absence of a brain anomaly was significantly associated with differences in measurements. When comparing the agreement between the US and MRI measurements for ventriculomegaly; the kappa level of agreement for the LV and RV was 0.74 for each.
MRI measurements of ventricles are significantly larger than the measurements by US by ∼1 mm. There is a good level of agreement when categorizing by normal, mild and severe ventriculomegaly.
评估胎儿脑侧脑室测量值在超声（US）和磁共振成像（MRI）之间是否存在差异。
我们评估了115例胎儿，其US和MRI检查在彼此24小时内完成。两种检查方法均在心房水平的轴位平面进行脑室测量，并分别评估左右脑室。我们比较了平均测量值、平均差异、与孕周（GA）的相关性、与脑异常存在情况的相关性以及MRI和US之间的一致性。
分别对65例和64例进行了左心室（LV）和右心室（RV）测量。与US相比，MRI测量时LV和RV大小估计值显著更大（p < 0.001）。因此，MRI测量的LV和RV分别比US大0.87毫米和0.89毫米。测量时的GA以及是否存在脑异常均与测量差异无显著相关性。比较US和MRI测量脑室扩大的一致性时，LV和RV的kappa一致性水平均为0.74。
MRI测量的脑室明显比US测量值大约1毫米。在按正常、轻度和重度脑室扩大进行分类时，一致性良好。
