Zhu X P, Checkley D R, Hickey D S, Isherwood I
J Comput Assist Tomogr. 1986 Jan-Feb;10(1):96-102. doi: 10.1097/00004728-198601000-00021.
The accuracy of area measurements made on magnetic resonance (MR) and CT images with clinical general purpose scanners was compared using automatic boundary detection. Both backprojection and two-dimensional Fourier transform reconstruction were used with several pulse sequences for the MR images. Several phantoms were scanned with different receiver coils and image matrices. Errors caused by grey level variation in MR images can be reduced using local edge detection. The estimated values varied with the sequence, reconstruction algorithm, and the area under investigation. Magnetic resonance area measurements should be interpreted with caution.
使用自动边界检测比较了临床通用扫描仪在磁共振（MR）和CT图像上进行面积测量的准确性。对MR图像使用了几种脉冲序列的反投影和二维傅里叶变换重建。用不同的接收线圈和图像矩阵扫描了几个体模。使用局部边缘检测可以减少MR图像中灰度变化引起的误差。估计值随序列、重建算法和所研究的面积而变化。磁共振面积测量的结果应谨慎解读。
