MSCTA与3D CE-MRA对脑膜瘤血供的对比观察

目的 探讨多排螺旋CT血管成像(MSCTA)与三维增强磁共振血管造影(3D CE-MRA)对显示脑膜瘤血供的价值. 方法 对20例脑膜瘤患者同时行MSCTA和3D CE-MRA观察瘤体血供,并对成像结果 对比分析. 结果 两种方法 皆能明确显示瘤体主要供血动脉及引流静脉;MSCTA较CE-MRA能够提供更多的瘤周细小供血动脉及引流静脉信息;12例大脑凸面脑膜瘤中,3D CE-MRA法同一平面完整显示近颅骨侧血管36条,MSCTA法仅显示16条;9例窦旁脑膜瘤CE-MRA皆立体、准确地提供窦腔结构受侵信息及侧支循环静脉通路,MSCTA对3例窦腔侵犯程度被低估或高估;MSCTA法显示10例骨质侵犯改变,CE-MRA法显示不明显. 结论 MSCTA与3D CE-MRA都能对脑膜瘤的血供特点进行术前评价;MSCTA对血管细小分支的显示优于3D CE-MRA,后者在瘤周静脉窦及近颅骨侧血管的评价因无骨质干扰而具有优势;MSCTA在显示骨质改变方面具有优势.

Comparision of MSCTA and 3D CE-MRA in nurturing vessels of menigioma

Objective To compare the clinical value of contrast-enhanced three-dimensional magnetic resonance angiography (3D CE-MRA) and multi-slice spiral CT angiography (MSCTA) in evaluating the blood supply of menigioma. Methods Twenty patients with menigioma underwent 3D CE-MRA and MSCTA examination. Then the images were analyzed. Results The main arteries and draining veins devoted in nurturing menigioma were clearly showed with 3D CE-MRA and MSCTA, and the latter could provide more information about small vessels. Meanwhile, 36 adjacent skull vessels were integratedly showed with 3D CE-MRA in 12 patients with cerebral convex meningioma, while only 12 vessels were showed with MSCTA. The degree of invasion for sinus and collateral venous pathway in 9 patients with the meningiomas adjacent to the sinus were showed with 3D CE-MRA, while the degree of invasion for sinus were underestimated or overestimated in 3 patients with MSCTA because of the influence of osteoporosis. The change of osteoporosis in 10 patients was depicted. Conclusion Vessel formation can be provided by both 3D CE-MRA and MSCTA preoperatively. MSCTA is superior to CE-MRA in observing the small branch of vessels and changes of skull. CE-MRA has advantage on showing venous sinus and vessels near skull side.