Spinal dural arteriovenous fistulas (SDAVF) account for about 70% of all spinal AV shunts. We re-port on a 56-year-old male patient with progressive neurological symptoms. Pre- and post-contrast MR imaging of the spin...Spinal dural arteriovenous fistulas (SDAVF) account for about 70% of all spinal AV shunts. We re-port on a 56-year-old male patient with progressive neurological symptoms. Pre- and post-contrast MR imaging of the spine, including contrast-enhanced MR angiography was done on a 1.5 T MR scanner. In addition a special (pre-contrast) 3D turbo-spin-echo sequence with variable flip angle evolution (SPACE) was performed providing a slice thickness of 0.9 mm. T2-weighted images showed extensive widened and tortuous vascular structures with typical flow voids intradurally due to dilated pial veins. The origin of the spinal dural arteriovenous fistula was found to be the radiculomeningeal artery at level D10/11 on the left side, visualized by the T2-weighted 3D SPACE sequence and CE MRA. After imaging the patient was referred to an interventional neuroradiology department for therapy. With the detailed information from MR imaging concerning the fistula level the interventional radiologist was able to find the fistula immediately and consequently treated it successfully by endovascular therapy. Interpreting the MR images of this obvious case of a SDAVF, SPACE sequence after post processing with 3D MPR software directly led to the location of the AV shunt at D10/11 on the left side, better than 3D contrast-enhanced MR angiography did. Therefore, SPACE can be a useful adjunct in further evaluation of spinal dural arteriovenous fistula and especially in defining fistula level.展开更多
目的探讨对比增强三维时间飞跃法磁共振血管造影(3D CE TOF MRA)对后组静脉窦,尤其是窦汇区解剖及变异中的应用价值。方法对28例受检者行常规MRI和3D CE TOF MRA检查,排除颅内静脉系统病变后,对MRA结果进行分析。结果28例中,横窦左右对...目的探讨对比增强三维时间飞跃法磁共振血管造影(3D CE TOF MRA)对后组静脉窦,尤其是窦汇区解剖及变异中的应用价值。方法对28例受检者行常规MRI和3D CE TOF MRA检查,排除颅内静脉系统病变后,对MRA结果进行分析。结果28例中,横窦左右对称12例,优势侧横窦位于右侧14例,左侧2例;上矢状窦和直窦与左右横窦均有四种连接方式;左右横窦之间可以连接或不连接;非优势侧横窦可以发育细小或完全不发育。结论3DCETOFMRA是显示窦汇区的正常解剖和变异的有效方法。展开更多
文摘Spinal dural arteriovenous fistulas (SDAVF) account for about 70% of all spinal AV shunts. We re-port on a 56-year-old male patient with progressive neurological symptoms. Pre- and post-contrast MR imaging of the spine, including contrast-enhanced MR angiography was done on a 1.5 T MR scanner. In addition a special (pre-contrast) 3D turbo-spin-echo sequence with variable flip angle evolution (SPACE) was performed providing a slice thickness of 0.9 mm. T2-weighted images showed extensive widened and tortuous vascular structures with typical flow voids intradurally due to dilated pial veins. The origin of the spinal dural arteriovenous fistula was found to be the radiculomeningeal artery at level D10/11 on the left side, visualized by the T2-weighted 3D SPACE sequence and CE MRA. After imaging the patient was referred to an interventional neuroradiology department for therapy. With the detailed information from MR imaging concerning the fistula level the interventional radiologist was able to find the fistula immediately and consequently treated it successfully by endovascular therapy. Interpreting the MR images of this obvious case of a SDAVF, SPACE sequence after post processing with 3D MPR software directly led to the location of the AV shunt at D10/11 on the left side, better than 3D contrast-enhanced MR angiography did. Therefore, SPACE can be a useful adjunct in further evaluation of spinal dural arteriovenous fistula and especially in defining fistula level.
文摘目的探讨对比增强三维时间飞跃法磁共振血管造影(3D CE TOF MRA)对后组静脉窦,尤其是窦汇区解剖及变异中的应用价值。方法对28例受检者行常规MRI和3D CE TOF MRA检查,排除颅内静脉系统病变后,对MRA结果进行分析。结果28例中,横窦左右对称12例,优势侧横窦位于右侧14例,左侧2例;上矢状窦和直窦与左右横窦均有四种连接方式;左右横窦之间可以连接或不连接;非优势侧横窦可以发育细小或完全不发育。结论3DCETOFMRA是显示窦汇区的正常解剖和变异的有效方法。
