[摘要] 目的 探討島蓋區膠質瘤手術方法及術后并發缺血性梗死。 方法 11例經治島蓋膠質瘤的患者,術后立刻做MRI(包括DW)觀察臨床效果及副反應。 結果 其中3例患者,因術中血供中斷,引起放射冠內下行運動路徑的梗死灶意外擴大,可能造成長束功能的損害。 結論 島蓋膠質瘤切除術可能引起放射冠或輕或重的缺血性并發癥。
[關鍵詞] 島蓋膠質瘤;島長動脈;放射冠;缺血性梗死
[中圖分類號] R743.33 [文獻標識碼] B [文章編號] 2095-0616(2013)13-107-04
Ischemic complications associated with resection of opercular gliomas
WANG Jinchun1 XU Jinghong2 LI Shuping1 HONG Ji1 YANG Bo1 LIU Xinlong3
1.Department of Radiation,No.455 Hospital of PLA,Shanghai 200052,China;2.Department of Pharmaceutical Preparation Section,No.455 Hospital of PLA,Shanghai 200052,China;3.Deparment of Cerebral Surgery,No.455 Hospital of PLA,Shanghai 200052,China
[Abstract] Objective Explore the resection of opercular gliomas surgical method associated with ischemic complications. Methods Immediate postoperative MR imaging that included DW imaging disclosed infarct lesions in all of 11 patients treated for opercular gliomas,who were observed the curative effect. Results In 3 patients,disruption of the blood supply during surgery produced unexpected extension of the infarct lesions to the descending motor pathway in the corona radiata, which may have impaired long tract functions. Conclusion Resection of opercular glioma can cause mild or severe ischemic complications in the corona radiate.
[Key words] Opercular gliomas;Long insular arteries;Corona radiate;Ischemic infarction
要理解蓋膠質瘤術后,并發放射冠梗死,需要更加精細和準確的腦血管分布的知識。在大體沒有腦病理學改變的尸腦的冠位和軸位的微血管造影里,我們檢查了島蓋區及周圍軟腦膜皮層動脈,以確定放射冠的血供;我們先復習一下隗部亨弘等1985年拍攝報道的基底穿通動脈分布的微血管造影研究的影像[1-2]。
冠位微血管造影片顯示,島長動脈和髓長動脈都來自于大腦中動脈的島蓋和皮質段,從額頂島蓋上方通過,供血放射冠。外側豆紋動脈群(LSA)供應內囊后肢上部鄰近區(圖1)。軸位微血管造影片顯示放射冠由來自MCA的髓動脈供血(圖2)。這些發現表明,島蓋膠質瘤手術切除,即使不累及島葉,也可能犧牲MCA島蓋皮質段的島長動脈和髓長動脈,最終引起放射冠的腦梗死。
1 MRI掃描協議、參數及其研究
我們用1.5-T系統做了術前、術后及后繼隨訪MRI,傳了術后72 h內的影像。我們獲得給釓劑前與后的T1WI,T2WI,不做患者頭重置的同一成像會話期間的DWI。用脂肪抑制。軸位DWI是用自旋回波平面成像(重復時間,5000 ms;……