Threshold estimation for region segmentation on MR image of brain having the partial volume artifact
Threshold estimation for region segmentation on MR image of brain having the partial volume artifact
复制标题
具有部分体积伪影的大脑MR图像区域分割的阈值估计
DOI：
10.1109/icosp.2000.891695
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Jong
中科院分区：
文献类型：
--
作者：
Yun;Ki;Chang;Seung;Jong
本研究旨在对脑MR图像上的白质、灰质和脑脊液（CSF）进行分割，并计算其体积。首先，在去除脑磁共振图像的背景后，我们从颅骨和脂肪层中分割出整个大脑区域。然后，我们计算了扫描有限厚度中存在的每个分量的局部体积，并根据MR图像形成原理对大脑内部区域显示模糊效果的灰度值进行算术分析。计算出的白质、灰质和脑脊液的部分体积用于确定脑MR图像上显示模糊效果的每个部分的分割阈值。最后，计算脑白质、灰质和脑脊液的分割体积。本研究结果可作为判断阿尔茨海默病、脑瘫等神经退行性疾病患者脑萎缩程度的客观诊断方法。
This study aims to segment white matter, gray matter, and cerebrospinal fluid (CSF) on a brain MR image and to calculate the volume of each. First, after removing the background on a brain MR image, we segmented the whole region of a brain from the skull and fat layer. Then, we calculated the partial volume of each component, which was present in the scanning finite thickness, with the arithmetical analysis of the gray value from the internal region of the brain showing the blurring effects on the basis of the MR image forming principle. Calculated partial volumes of white matter, gray matter and CSF were used to determine the threshold for the segmentation of each component on a brain MR image showing the blurring effects. Finally, the volumes of segmented white matter, gray matter, and CSF were calculated. The result of this study can be used as an objective diagnostic method to determine the degree of brain atrophy of patients who have neurodegenerative diseases such as Alzheimer's disease and cerebral palsy.