Objective: To study the diagnostic value of MRI in trigeminal neuralgia. Methods: From January 2016 to May 2018, 100 patients with primary trigeminal neuralgia were treated in our hospital. Before operation, the patients were examined by MRI. The images of three dimensional fast imaging employing steady state acquisition 3D-FIESTA and three dimensionaltime of flight 3D-TOF were collected. The neurovascular contact compression was evaluated by two radiologists who are experienced in MRI diagnosis. The sensitivity, specificity and accuracy of 3D-FIESTA and 3D-TOF in the diagnosis of neurovascular contact compression in trigeminal neuralgia were calculated and compared. The display rate of 3D-FIESTA and 3D-TOF for different responsible blood vessels was calculated and compared. Results: Of the 100 cases of trigeminal neuralgia, 75 cases were confirmed by surgery having nerovascular contact compression in cisternal segment of the trigeminal nerve and adjacent brain stem tissue. The diagnostic sensitivity, specificity and accuracy of 3D-FIESTA and 3D-TOF in patients with trigeminal neuralgia were not different significantly(97.33% vs 94.67%, 92.00% vs 96.00%, 96.00% vs 95.00%, respectively) (P>0.05). The results of 3D-FIESTA and 3D-TOF in diagnosis of neurovascular contact compression in patients with trigeminal neuralgia were consistent with that found surgically. The Kappa values were higher than 0.7. The display rates of 3D-FIESTAST and 3D-TOF in superior cerebellar artery, anterior inferior cerebellar artery and vertebral artery were 100.00%.The display rates of two or more arteries and artery + vein were not 100.00%. However, the difference was not statistically significant (P>0.05). Conclusions: Preoperative MRI can clearly display the neurovascular contact compression in patients with primary trigeminal neuralgia, especially 3D-FIESTA and 3D-TOF imaging, which can be used not only as the main diagnostic method of trigeminal neuralgia, but also as an auxiliary means of localization for surgery in patients with trigeminal neuralgia.
LI Yunfeng, JIANG Hong, LI Ning, SUN Qingfang
. Analysis and study on value of MRI in diagnosis of trigeminal neuralgia[J]. Journal of Diagnostics Concepts & Practice, 2018
, 17(05)
: 562
-565
.
DOI: 10.16150/j.1671-2870.2018.05.015
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