三维超声与磁共振成像在人体肾脏体积估计中的体内比较

In vivo comparison of 3D ultrasonography and magnetic resonance imaging in volume estimation of human kidneys.

作者信息

Gilja O H, Smievoll A I, Thune N, Matre K, Hausken T, Odegaard S, Berstad A

机构信息

Medical Department A, Haukeland Hospital, University of Bergen, Norway.

出版信息

Ultrasound Med Biol. 1995;21(1):25-32. doi: 10.1016/0301-5629(94)00082-4.

DOI:10.1016/0301-5629(94)00082-4

PMID:7754576

Abstract

The objective of this study was to evaluate the accuracy of a three-dimensional ultrasound system (3D-US) compared with Magnetic Resonance Imaging (MRI) in volume estimation of human kidneys in vivo. Twenty healthy volunteers were scanned fasting in supine position with MRI and with a 3D-US. An ultrasound sector scanner with a mechanical transducer coupled to a tilting motor provided images of multiple sections of kidneys. A 3.25-MHz transducer was tilted through 88 degrees yielding 81 frames, and volume estimation was performed on a Unix workstation after manual contour indication. Data acquisition with MRI was performed by using a 1-T magnet. Eighteen included kidneys [mean +/- standard deviation (SD)] measured 155.7 +/- 26.4 mL (range 110.0-205.0 mL) by 3D ultrasound and 171.8 +/- 24.6 mL (range 127.5-211.0 mL) by MRI, yielding a good correlation (r = 0.82, p < 0.001) between the two methods. The mean difference was -16.1 +/- 15.6 mL (SD) and the limits of agreement were -49.0 mL. We conclude that this 3D-US is accurate in volume estimation of human kidneys in vivo.

摘要

本研究的目的是评估三维超声系统（3D-US）与磁共振成像（MRI）相比，在活体人肾脏体积估计中的准确性。20名健康志愿者在空腹仰卧位接受了MRI和3D-US扫描。一台配备与倾斜电机相连的机械换能器的超声扇形扫描仪提供了肾脏多个断面的图像。一个3.25兆赫兹的换能器倾斜88度产生81帧图像，在手动勾勒轮廓后在Unix工作站上进行体积估计。MRI的数据采集使用1-T磁体进行。18个纳入研究的肾脏，3D超声测量的平均体积为155.7±26.4毫升（范围110.0 - 205.0毫升），MRI测量的平均体积为171.8±24.6毫升（范围127.5 - 211.0毫升），两种方法之间具有良好的相关性（r = 0.82，p < 0.001）。平均差异为-16.1±15.6毫升（标准差），一致性界限为-49.0毫升。我们得出结论，这种3D-US在活体人肾脏体积估计中是准确的。