Effect of MR Field Strength on the Texture Features of Cerebral T2-FLAIR Images: A Pilot Study

Wang Xuedan; Wang Shiwei; Wang Botao; Chen Zhiye

doi:10.24920/003713

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Effect of MR Field Strength on the Texture Features of Cerebral T2-FLAIR Images: A Pilot Study

Chinese Medical Sciences Journal Vol. 35, Issue 3, Pages: 248-253(2020)

Original Article | Updated：2024-04-10

- Effect of MR Field Strength on the Texture Features of Cerebral T2-FLAIR Images: A Pilot Study
- Affiliations：
  
  Department of Radiology, Hainan Hospital of Chinese PLA General Hospital, Sanya, Hainan 572013, China
- Author bio：
  
  * Tel: 86-898-37330852, E-mail: yyqf@hotmail.com
- Funds：
- DOI：10.24920/003713
  CLC：
- Received：20 February 2020，
  
  Published Online：30 September 2020，
  
  Published：30 September 2020
- Accepted：
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Wang Xuedan, Wang Shiwei, Wang Botao, et al. Effect of MR Field Strength on the Texture Features of Cerebral T2-FLAIR Images: A Pilot Study[J]. Chinese medical sciences journal, 2020, 35(3): 248-253.
DOI：

Wang Xuedan, Wang Shiwei, Wang Botao, et al. Effect of MR Field Strength on the Texture Features of Cerebral T2-FLAIR Images: A Pilot Study[J]. Chinese medical sciences journal, 2020, 35(3): 248-253. DOI： 10.24920/003713.

摘要

目的

探讨磁共振场强对脑部T2液体衰减反转恢复（T2-FLAIR）图像纹理特征的影响。

方法

我们分别采用MR-1.5T和MR-3.0T扫描对30例脑白质病变患者进行了脑部三维T2-FLAIR成像。基于ImageJ软件采用感兴趣法对白质病变区和正常白质区进行测量

并比较了MR-1.5T和MR-3.0T扫描图像所获得的纹理参数。直方图纹理特征包括平均信号强度、偏度和峰度

灰度共生矩阵纹理特征包括角二阶矩、对比度、自相关、逆差矩和熵。

结果

不论是脑白质病变区还是正常脑白质

由MR-1.5T扫描获得的平均信号强度值均显著低于MR-3.0T扫描的结果（

0.001）

而在两种场强下偏度和峰度的差异无显著性（

0.05）;此外

由MR-1.5T扫描获得的角二阶矩、自相关和逆差距均显著低于MR-3.0T扫描的结果（

0.001）

而对比度和熵均显著高于MR-3.0T扫描的结果（

0.001）。

结论

MR场强对MR-1.5T和MR-3.0T系统所生成的脑部T2-FLAIR图像的直方图纹理无显著影响

而对灰度共生矩阵纹理特征有显著影响

此结果提示应谨慎解释不同MR场强下T2-FLAIR图像的纹理结果。

Abstract

Objective

To investigate effect of MR field strength on texture features of cerebral T2 fluid attenuated inversion recovery (T2-FLAIR) images.

Methods

We acquired cerebral 3D T2-FLAIR images of thirty patients who were diagnosed with ischemic white matter lesion (WML) with MR-1.5T and MR-3.0T scanners. Histogram texture features which included mean signal intensity (Mean)

Skewness and Kurtosis

and gray level co-occurrence matrix (GLCM) texture features which included angular second moment (ASM)

Contrast

Correlation

Inverse difference moment (IDM) and Entropy

of regions of interest located in the area of WML and normal white matter (NWM) were measured by ImageJ software. The texture parameters acquired with MR-1.5T scanning were compared with MR-3.0T scanning.

Results

The Mean of both WML and NWM obtained with MR-1.5T scanning was significantly lower than that acquired with MR-3.0T (

0.001)

while Skewness and Kurtosis between MR-1.5T and MR-3.0T scanning showed no significant difference (

0.05). ASM

Correlation and IDM of both WML and NWM acquired with MR-1.5T revealed significantly lower values than those with MR-3.0T (

0.001)

while Contrast and Entropy acquired with MR-1.5T showed significantly higher values than those with MR-3.0T (

0.001).

Conclusion

MR field strength showed no significant effect on histogram textures

while had significant effect on GLCM texture features of cerebral T2-FLAIR images

which indicated that it should be cautious to explain the texture results acquired based on the different MR field strength.

关键词

Keywords

references

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