体内器官体积的三维超声测量：在膀胱中的验证
In vivo three-dimensional sonographic measurement of organ volume: validation in the urinary bladder.
作者信息
Riccabona M, Nelson T R, Pretorius D H, Davidson T E
机构信息
Department of Radiology, University of California, San Diego, La Jolla 92093-0610, USA.
出版信息
J Ultrasound Med. 1996 Sep;15(9):627-32. doi: 10.7863/jum.1996.15.9.627.
The purpose of this study was to assess the accuracy of in vivo measurement of organ volume using 3DUS and compare the results to 2D sonographic methods using the urinary bladder as the target organ and voided urine volume for validation. Fifty normal volunteers were studied. 2D volume measurements were based on length, width, and depth data and assumed a regular geometric model. 3D volume measurements were based on masked slices with the voxels integrated over the entire bladder. Voided urine volumes ranged from 35 ml to 701 ml. Residual urine volume was present in 48% of the subjects and ranged from 1% to 14% of the voided volume. 2D volume estimates for all 50 subjects had a mean absolute value of the error of 27.5% +/- 17.8%. 3D volume measurements had a mean absolute value of the error of 4.3% +/- 3.7% (transverse) and 5.6% +/- 3.8% (longitudinal). 3DUS provided more accurate volume measurements than 2DUS, particularly for irregularly shaped organs.
本研究的目的是评估使用三维超声（3DUS）进行器官体积活体测量的准确性，并将结果与以膀胱为目标器官、以排尿量进行验证的二维超声检查方法进行比较。对50名正常志愿者进行了研究。二维体积测量基于长度、宽度和深度数据，并假定为规则几何模型。三维体积测量基于对整个膀胱上的体素进行掩膜切片。排尿量在35毫升至701毫升之间。48%的受试者存在残余尿量，残余尿量占排尿量的1%至14%。所有50名受试者的二维体积估计误差的平均绝对值为27.5%±17.8%。三维体积测量误差的平均绝对值为横向4.3%±3.7%，纵向5.6%±3.8%。三维超声比二维超声提供了更准确的体积测量，特别是对于形状不规则的器官。
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