Objective To provide the imaging basis on microstructure changing for the clinical diagnosis of trigeminal neuralgia. Methods There were 150 normal persons and 100 patients with primary trigeminal neuralgia selected by diffusion tensor imaging (DTI) scanning of the cranial brain, and all patients were unilateral. The patients were divided into group A (close or contact group), group B (mild compression group), group C (severe compression group) and group D (compression deformation and atrophy group) according to the degree of lesion. The region of interest was divided into the cisternal segment of trigeminal nerve and the lesion site of trigeminal neuralgia at workstation, and the apparent diffusion coefficient (ADC) value and fractional anisotropy (FA) value of the region of interest were measured. ADC values and FA values of different ages, sites, the affected and healthy sides of trigeminal neuralgia, and different lesions of the trigeminal cerebral cistern were compared. Results There was no statistical differences in other ADC values and FA values between the groups under 35 years old, 35~55 years old and over 55 years old except the ADC value at 6 mm and 9 mm from the brainstem (P＞0.05). Apart from the FA values at 6 mm and 9 mm, statistical differences in other FA values and ADC values between the 0 mm, 3 mm, 6 mm and 9 mm length from brainstem of the cisternal segment of trigeminal nerve were found (P＜0.05). statistical differences in the ADC values and FA values among the affected-side group, the healthy-side group of trigeminal neuralgia and the normal group were found(P＜0.05), and no statistical difference in ADC values and FA values between the healthy-side group of trigeminal neuralgia and normal group was found (P＞0.05). Statistical differences in ADC values and FA values among the A, B, C and D groups on the affected side of trigeminal neuralgia were found (P＜0.05). Conclusions The ADC values and FA values of the cisternal segment of trigeminal nerve are closely related to the age, position and the degree of vascular compression on the affected side of trigeminal neuralgia. DTI can provide an objective imaging diagnostic basis for the changes in the microstructure of the trigeminal cistern.
Key words
Trigeminal neuralgia /
Cisternal segment of trigeminal nerve /
Diffusion tensor imaging /
MRI
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] 冯保会, 李世亭. 原发性三叉神经痛治疗研究[J]. 中华神经外科疾病研究杂志, 2011, 17(3): 280-282.
[2] Vörös E, Palkó A, Horváth K, et al. Three-dimensinal time of flight MR angiography in trigeminal neuralgia on a 0.5-T system[J]. Eur Radiol,2001, 11(4): 642-647.
[3] 贾飞鸽, 孙希杰, 许乙凯, 等. 磁共振 3D-FIESTA序列对三叉神经、 面神经颅内段的显示[J]. 中国临床医学影像学杂志, 2008, 19(5): 360-362.
[4] 颜剑豪, 江桂华, 曾少庆, 等. 健康者三叉神经磁共振扩散张量成像研究[J]. 中华神经医学杂志, 2011, 10(8): 829-833.
[5] Herweh C, Kress B, Rasche D, et al. Loss of anisotropy in trigeminal neuralgia revealed by diffusion tensor imaging[J]. Neurology, 2007, 68(10): 776-778.
[6] 李猛, 张继武, 陈修存. 微血管减压术治疗三叉神经痛 100例临床分析[J]. 河北医学, 2013, 10(2): 199-201.
[7] 徐佳鸣, 漆松涛, 石瑾, 等. 三叉神经移行区的显微解剖学研究及其临床意义[J]. 中国临床解剖学杂志, 2012, 30(4): 367-370.
[8] De Ridder D, Møller A, Verlooy J, et a1. Is the root entry/exit zone important in microvascular compression syndromea[J]. Neurosurgery,2002, 51(2): 427-433.
[9] 赵绍云, 俞文华. 弥散张量成像在三叉神经痛中的应用研究[J]. 浙江临床医学, 2017, 19(5): 986-987.
[10]李继平, 刘亚欧, 张晓华, 等. 应用磁共振弥散张量成像观测显微血管减压术后三叉神经的结构变化[J]. 神经疾病与精神卫生, 2016, 16(4): 387-391.
[11]Dandy WE. The treatment of trigeminal neuralgia by the cerebellar route[J]. Ann Surg, 1932, 96(4): 787-795.
[12]Jannetta PJ, Abbasy M, Maroon JC, et al. Etiology and definitive microsurgical treatment of hemifacial spasm: operative techniques and results in 47 patients[J]. J Neurosurg, 1977, 47(3): 321-328.
[13]孙晓辉, 颜剑豪, 罗唯师, 等. 磁共振扩散张量成像在三叉神经痛微血管减压术中的应用[J]. 广东医学, 2012, 33(19): 2924-2927.
[14] 黄建松, 邢伟, 陈杰, 等. 血管压迫性三叉神经痛 MR扩散张量成像研究[J]. 中国医学计算机成像杂志, 2012, 18(3): 198-200.
[15]尤超, 柴维敏, 陈克敏, 等. 三叉神经痛血管接触/压迫征象的弥散张量成像研究[J]. 中国医学计算机成像杂志, 2012, 18(3): 193-197.
[16]Facon D, Ozanne A, Fillard P, et al. MR diffusion tensor imaging and fiber tracking in spinal cord compression[J]. AJNR Am J Neuroradiol,2005, 26(6): 1587-1594.
