三维超声测量胎儿大腿和上臂体积：多平面法与XI VOCAL法的比较
Fetal thigh and upper arm volumes by 3D-sonography: comparison between multiplanar and XI VOCAL methods.
作者信息
Nardozza Luciano M M, Cavalcante Rafael O, Araujo Júnior Edward, Rolo Liliam C, Moron Antonio F
机构信息
Department of Obstetrics, Federal University of São Paulo, São Paulo, Brazil.
出版信息
J Matern Fetal Neonatal Med. 2012 Apr;25(4):353-7. doi: 10.3109/14767058.2011.578183. Epub 2011 May 24.
OBJECTIVE
To compare fetal upper arm and thigh volume measurements acquired by three-dimensional (3D) ultrasound using the multiplanar and the eXtended Imaging Virtual Organ Computer-aided AnaLysis (XI VOCAL) methods with different number of sectional planes.
METHODS
This study enrolled 40 healthy pregnant women between 20 and 40 weeks of gestation. The volume of fetal limbs was calculated using the multiplanar (with 5.0 mm intervals) and the XI VOCAL (with 5, 10, 15, and 20 slice planes) methods. Comparison between the techniques was made by analysis of variance and Bonferroni statistical tests.
RESULTS
Mean fetal upper arm volume measured by the 15 sectional planes XI VOCAL method was lower than the same method using 5 and 10 planes instead (p = 0.025 and 0.039, respectively). Fetal thigh volume showed no statistically significant differences among all studied methods.
CONCLUSION
The XI VOCAL using 15 sectional planes method underestimated the fetal upper arm volume by 5 and 10 planes XI VOCAL techniques.
目的
比较采用多平面法和扩展成像虚拟器官计算机辅助分析（XI VOCAL）法、使用不同数量断面的三维超声获取的胎儿上臂和大腿体积测量值。
方法
本研究纳入40例妊娠20至40周的健康孕妇。采用多平面法（间隔5.0毫米）和XI VOCAL法（分别采用5、10、15和20个层面）计算胎儿肢体体积。通过方差分析和Bonferroni统计检验对两种技术进行比较。
结果
采用15个断面的XI VOCAL法测量的胎儿上臂平均体积低于采用5个和10个断面的相同方法（p值分别为0.025和0.039）。在所有研究方法中，胎儿大腿体积均无统计学显著差异。
结论
采用15个断面的XI VOCAL法比采用5个和10个断面的XI VOCAL技术低估了胎儿上臂体积。
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