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神经损伤与再生
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神经损伤与再生  

弥散张量纤维成像检测大脑半球弓形束曲率一文的图片
(Volume 8 Number 3 January 2013)


Cite this article:
Dong Hoon Lee, Cheol Pyo Hong, Yong Hyun Kwon, Yoon Tae Hwang, Joong Hwi Kim, Ji Won Park. Curvature range measurements of the arcuate fasciculus using diffusion tensor tractography[J]. Neural Regeneration Research, 2013, 8(3): 244-250.


Quantitative analysis of subjects

All 12 healthy subjects were suitable for final analysis.

 

Curvature range measurements

Table 1 shows the direct curvature range (DCR) and indirect curvature range (ICR) values measured for the arcuate fasciculus horizontal and vertical parts from each subject in the left hemisphere. For the subjects, the maximum and minimum values were 132.88/31.56 and 112.56/22.58 degrees for the DCR/ICR of the arcuate fasciculus horizontal part. For the arcuate fasciculus vertical part, the values were 47.57/32.35 and 32.47/18.12 degrees for the DCR/ICR. Table 2 shows the DCR and ICR values measured for the arcuate fasciculus horizontal and vertical parts from each subject in the right hemisphere. The maximum and minimum values were 130.52/30.11 and 113.96/21.44 degrees for the DCR/ICR of the arcuate fasciculus horizontal part. For the arcuate fasciculus vertical part, the values were 61.48/36.22 and 33.26/22.11 degrees for the DCR/ICR.

Table 1 The arcuate fasciculus curvature range (degree) measurement for each subject in the left hemisphere

The maximum limit of the angles was 180 degrees. In the right hemisphere, the DCR and ICR of the arcuate fasciculus horizontal part were 121.13 ± 5.89 and   25.99 ± 3.01 degrees, respectively. In the left hemisphere, the values were 121.83 ± 5.33 degrees for the DCR and 27.40 ± 2.96 degrees for the ICR. The DCR and ICR values for the arcuate fasciculus vertical part in the right hemisphere were 43.97 ± 7.98 and 30.15 ± 3.82 degrees, respectively. In the left hemisphere, the values were 39.39 ± 4.42 degrees for the DCR and 24.08 ± 4.34 degrees for the ICR. For the arcuate fasciculus horizontal part curvature ranges, there were no significant differences between the DCR and ICR in either hemisphere. However, for the arcuate fasciculus vertical part curvature ranges, there were some differences between the right and left hemispheres. On average, the differences between the two hemispheres for the DCR and ICR for the arcuate fasciculus vertical part were approximately 4 and 6 degrees, respectively.

Table 2 The arcuate fasciculus curvature range (degree) measurement for each subject in the right hemisphere
 
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