Department of Obstetrics and Gynecology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
J Ultrasound Med. 2009 Dec;28(12):1651-6. doi: 10.7863/jum.2009.28.12.1651.
The purpose of this study was to establish reference ranges for the transverse aortic arch diameter (TAD) and distal aortic isthmus diameter (DAID) in normal singleton pregnancies (14-40 weeks) based on the 3-vessel/trachea (3VT) view of cardio-spatiotemporal image correlation (STIC) volume data sets.
A prospective descriptive study was conducted on uncomplicated singleton pregnancies with healthy fetuses and an accurate gestational age (GA). Cardio-STIC examinations were performed by experienced sonographers using a high-resolution ultrasound machine, and the volume data sets were manipulated to obtain the 3VT view and measured for the TAD and DAID.
A total of 554 measurements were performed, ranging from 13 to 30 for each gestational week. The best regression models were as follows: TAD (in millimeters) = -1.01 + 1.69 (GA, in weeks) (r(2) = 0.93; P < .001), and DAID (in millimeters) = -0.85 + 1.54 (GA, in weeks) (r(2) = 0.92; P < .001). A table of nomograms for 5th, 50th, and 95th percentile ranges was constructed.
Normative data for the TAD and DAID at each gestational week from 14 to 40 weeks were constructed by a new technique of measurement based on cardio-STIC. These reference ranges may be useful tools for assessment of fetal aortic arch abnormalities.
本研究旨在基于心血管时空关联（STIC）容积数据的 3 血管/气管（3VT）切面，建立正常单胎妊娠（14-40 周）的升主动脉弓直径（TAD）和远端主动脉峡部直径（DAID）的参考范围。
对具有健康胎儿和准确孕龄（GA）的单纯单胎妊娠进行前瞻性描述性研究。由有经验的超声医师使用高分辨率超声仪进行心脏 STIC 检查，并对容积数据进行处理以获得 3VT 切面，并测量 TAD 和 DAID。
共进行了 554 次测量，每个孕周的范围为 13-30。最佳回归模型如下：TAD（毫米）=-1.01+1.69（GA，周）（r²=0.93；P<0.001），DAID（毫米）=-0.85+1.54（GA，周）（r²=0.92；P<0.001）。构建了一个包含第 5、50 和 95 百分位范围的 5 个百分位数值表。
通过基于心血管 STIC 的新测量技术，构建了从 14 周到 40 周的每个孕周 TAD 和 DAID 的正常参考范围。这些参考范围可能是评估胎儿主动脉弓异常的有用工具。
