Kuroiwa T, Matsumoto S, Kato A, Harano K, Totoki T, Tabuchi K, Kudo S
Department of Radiology, Saga Medical School, Japan.
Radiat Med. 1996 Sep-Oct;14(5):235-9.
Magnetic resonance (MR) findings in patients with idiopathic trigeminal neuralgia were evaluated and correlated with the effectiveness of non-surgical treatments. Thirty-four patients with idiopathic trigeminal neuralgia (ITN) were examined using T1- and T2-weighted spin-echo (SE) pulse sequence techniques to evaluate their trigeminal root-entry zones and the vessels contacted prior to non-surgical treatment (retrogasserian glycerol injection, peripheral nerve block, or only oral analgesics). Vascular contact at the proximal portion of the preganglionic segment (PGS) of the trigeminal nerve and deformity of the PGS on the affected side were observed in 97% and 47% of the patients, respectively. Non-surgical treatments were curative in 12 (67%) but failed in two (11%) of the 18 patients without deformed PGS. However, among 16 patients with deformed PGS, they were curative in only six (37.5%) and failed in four (25%). Results of this study suggest that MR imaging could be useful in the clinical assessment of trigeminal neuralgia prior to instituting non-surgical treatment.
对特发性三叉神经痛患者的磁共振成像（MR）结果进行评估，并与非手术治疗的效果相关联。采用T1加权和T2加权自旋回波（SE）脉冲序列技术对34例特发性三叉神经痛（ITN）患者进行检查，以评估其三叉神经根入区以及在非手术治疗（半月节后甘油注射、周围神经阻滞或仅口服镇痛药）之前接触的血管。分别在97%和47%的患者中观察到三叉神经节前段（PGS）近端的血管接触和患侧PGS的畸形。在18例PGS未变形的患者中，非手术治疗治愈12例（67%），但2例（11%）失败。然而，在16例PGS变形的患者中，仅6例（37.5%）治愈，4例（25%）失败。本研究结果表明，MR成像在进行非手术治疗前对三叉神经痛的临床评估中可能有用。
