Evaluation of MRI included decrease in signal intensity of discs, posterior disc protrusion, disc space narrowing, and foraminal stenosis using 2 to 4 numerical grades.
MRI使用2 - 4数字评分评估包括椎间盘信号强度降低，椎间盘向后突出，椎间隙狭窄，以及椎间孔狭窄。
Grades at MIT are not rigidly related to any numerical scores or distribution functions, that is, grades are not awarded solely according to predetermined percentages.
麻省理工学院之成绩计算并非以原始分数及其分布函数情形而一成不变，也就是说，成绩不是仅以既定的百分比来核定。
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