外伤后颈内动脉海绵窦瘘的MRA诊断

目的 研究磁共振血管造影(MRA)在外伤性颈内动脉海绵窦瘘中的诊断价值.方法 回顾性分析我院2001年2月～2004年7月MRA检查诊断并经DSA或临床确诊的16例外伤性颈内动脉海绵窦瘘患者影像学资料.16例均进行二维相位对比法(2D-PC)和三维时间飞跃法(3D-TOF)检查.结果 16例患者2D-PC法显示海绵窦异常及扩张的引流静脉31个,3D-TOF法显示50个.16例中,对海绵窦扩大和扩张、迂曲的眼上静脉,3D-TOF MRA 100%显示,2D-PC MRA显示分别占总数的81.2%(13/16)和86.6%(13/15).结论 MRA能够比较全面地评估外伤后颈内动脉海绵窦瘘周围血管情况,多数情况下可作为介入治疗前的筛选诊断和治疗后随访的手段.

Diagnosis of traumatic carotid cavernous fistula using MRA

Objective To probe value of magnetic resonance angiography (MRA) in diagnosing traumatic carotid cavernous fistula (TCCF). Methods 16 patients who had been confirmed as TCCF by DSA or clinical manifestations underwent MRA during February 2001~July 2004. 2-Dimesion Phase Contrast(2D-PC)and 3-Dimesion Time of Flight(3D-TOF)were used. Results Among 16 patients, 2D-PC found enlarged cavernous sinus or engorged draining veins in 16 patients, and 3D-TOF found that in 50. As for showing enlarged cavernous sinus and engorged superior ophthalmic veins, 3D- TOF achieved 100 per cent success for both and 2D-PC got success rate of 81.2%(13/ 16) and 86.6%(13/15) respectively. Conclusion MRA is able to fully evaluate vessels around TCCF, useful for screening diagnosis and follow-up.