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目的:验证核磁共振在扫描颞颌关节各种疾病中具有较高价值。方法:临床上将患病者置于特殊的核磁共振仪中,利用仪器的无线电射频脉冲激发患者颞颌关节内氢原子核,并引起这些原子核共振,同时会吸收能量处于激发状态。当停止射频脉冲以后。由于氢原子能量较高时不稳定,需要通过释放能量达到基态。所以氢原子核会在释放能量过程中会发射一定频率的电信号。同时仪器内的接受器会接收信号,然后经过电子计算机程序处理后得到模拟图像。结果:通过对多例患者进行核磁共振检查同时进行X光等多设备检查。核磁共振加权图像可清楚显示颞颌关节的解剖结构,而且准确率较高。结论:核磁共振在颞颌关节疾病的诊断中具有较大价值。
Objective: To verify the high value of MRI in scanning various diseases of temporomandibular joint. Methods: The patients were clinically placed in a special nuclear magnetic resonance (NMR) instrument. The radio frequency pulse of the instrument was used to excite the hydrogen nuclei in the temporomandibular joint of patients and cause resonance of these nuclei. At the same time, they would absorb the energy in an excited state. After stopping the RF pulse. Due to the instability of hydrogen atoms at higher energies, it is necessary to reach the ground state by releasing energy. So the hydrogen nucleus will emit a certain frequency of electrical signals during the release of energy. At the same time the receiver within the instrument will receive the signal, and then after the computer program to get the simulation image. Results: Multiple MRI examinations were performed simultaneously on multiple patients with MRI. MRI-weighted images clearly show the anatomy of the temporomandibular joint with high accuracy. Conclusion: MRI is of great value in the diagnosis of temporomandibular joint diseases.