Value of magnetic resonance T 2 mapping in the diagnosis of early cervical disc degeneration in adolescents / 中国基层医药

ABSTRACT

Objective:To analyze the value of magnetic resonance T 2 mapping in the diagnosis of early cervical disc degeneration in adolescents. Methods Patients who underwent cervical MRI examination and magnetic resonance T 2 mapping in Wenzhou Hospital of Traditional Chinese Medicine between November 2019 and September 2020 were included in this study. They were divided into observation and control groups ( n = 50 per group) according to the time of lowering their heads (≥ 2 hours) every day. The T 2 values corresponding to the nucleus pulposus of cervical intervertebral disc in each segment was compared between the two groups. Cervical disk degeneration was graded using the Pfirrmann classification. T 2 value was compared between different Pfirrmann disc grades. The efficacy of T 2 value in the diagnosis of early cervical disc degeneration in adolescents was evaluated using the receiver operating characteristic curve. The specificity and sensitivity of T 2 value in the diagnosis of early cervical disc degeneration in adolescents and the area under the receiver operating characteristic curve were calculated. Results:T 2 value measured in each cervical intervertebral disc segment in the observation group was significantly greater than that in the control group ( t = 5.06, 4.47, 3.57, 2.93, 4.98 for C2-3, C3-4, C4-5, C5-6, C6-7 segments, all P < 0.05). In the observation group, the number of patients with Pfirrmann grade II cervical intervertebral disc degeneration was highest, accounting for 42% (21/50). There was a significant difference in cervical intervertebral disc segment T 2 value between different Pfirrmann disc grades ( t = 2.62, P = 0.018, vs. Pfirrmann disc grade I ; t = 2.12, P = 0.045, vs. Pfirrmann disc grade II; t = 2.24, P = 0.049, vs. Pfirrmann disc grade III). The higher Pfirrmann grade, the lower T 2 value of cervical intervertebral disc nucleus pulposus. The receiver operating characteristic curve showed that the sensitivity and specificity of T 2 value in the diagnosis of early cervical disc degeneration and the area under the receiver operating characteristic curve were 81.2%, 79.8% and 0.756, respectively. Conclusion:T 2 mapping imaging technology can predict early cervical intervertebral disc degeneration in adolescents by quantitatively analyzing the T 2 value of cervical intervertebral disc nucleus pulposus and has a high value in the diagnosis of cervical intervertebral disc degeneration. This achievement is of innovation and science.