Relevant research between the terminal zone and the children's mental retardation on MRI

LI Lin; ZHAO Jianshe

Abstract：Objective To explore the correlation between terminal zone and the children's mental retardation on MRI. Meth-ods We selected 378 children of low intelligence s and 296 cases of healthy with the same age range,aged from 0 to 6 years old, who underwent the standard MRI of head. We record the number,area and relative brightness of TZ,and the number of VRS in TZ. Then,the data were comprehensively analyzed. Results The total number of TZ are 877 in the MR,in which the posterior part of the lateral ventricle is 698(79.6%), the triangle of the lateral ventricle is 161(18.4%). However, the rest of lateral ventricle is relatively rare,only 18(2.0%). The average area of TZ in MR (84.75 ± 1.15) mm2/a) is bigger than the control group (54.32 ± 2.73) mm2/a) ( P <0.05);The average brightness of TZ in MR (396.36 ± 2.63) lm/a) is higher than the control group (284.45 ± 6.79) lm /a). There is a statistically significant difference( P <0.05). The VRS is detected in TZ of MR,and the detection rate is higher than the control group( P <0.05). Conclusion The detection rate,brightness and the av-erage area of TZ in mental retardation children are higher than the control group. The detection rate of VRS in MR is higher than the control group. A certain characteristic,which is the unpredictable factors of Mental retardation,should be paid a high atten-tion by the clinical doctor.