Al Hinai Qasim, Mok Kelvin, Zeitouni Anthony, Gagnon Bruno, Ajlan Abdul Razag, Rivera Juan, Tewfik Marc, Sirhan Denis
Skull Base. 2011 Nov;21(6):365-72. doi: 10.1055/s-0031-1287677.
Linear measurements have many limitations. The aim of this study is to compare manual and semiautomated volumetric measurements of pituitary adenomas. Magnetic resonance imaging (MRI) scans of 38 patients with pituitary adenomas were analyzed. Preoperative MRI was acquired on a 1.5 T. MRI volumes of the pituitary adenomas were obtained by two methods: manual (MA) and semiautomated (SA). The concurrent validity for SA and MA methods on 38 patients in the form of correlation coefficient was 0.97 (p < 0.0001). The intraobserver and the interobserver correlation coefficients for SA volumes were both 0.98, as for the intraobserver MA volumes were 0.98. Although the results of both methods are comparable, analysis of volumetric measurements by SA method is more time-efficient than MA segmentation. Precision in volumetric measurement techniques is likely to increase reliability of posttherapeutic monitoring of pituitary adenomas.
线性测量存在许多局限性。本研究的目的是比较垂体腺瘤的手动和半自动体积测量。分析了38例垂体腺瘤患者的磁共振成像（MRI）扫描。术前MRI在1.5T上采集。垂体腺瘤的MRI体积通过两种方法获得：手动（MA）和半自动（SA）。SA和MA方法对38例患者的相关系数形式的同时效度为0.97（p<0.0001）。SA体积的观察者内和观察者间相关系数均为0.98，MA体积的观察者内相关系数为0.98。虽然两种方法的结果具有可比性，但SA方法的体积测量分析比MA分割更省时。体积测量技术的精度可能会提高垂体腺瘤治疗后监测的可靠性。
