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腦部的正常ct及mri解剖-展示頁(yè)

2025-01-17 06:50本頁(yè)面
  

【正文】 ? The lesion is in the opposite side of impact site ? 30% incidence. Scalp swelling EDH 同側(cè)撞擊 同側(cè)出血 Countercoup Injury Dura (硬腦膜 ) Subdural (硬腦膜下 ) Epidural (硬腦膜上 ) 二 . Extracerebral lesions Epidural hematoma Subdural hematoma Subdural effusion Acute Epidural Hematoma ? Fusiform (紡綞狀 ) or biconvex (雙凸?fàn)?) hyperdense lesion ? 腫塊效應(yīng)強(qiáng),可造成 herniation(疝脫) ? The hematoma still contains uncoagulated blood, or still has active bleeding. ? Round , streamlike filling defects may be seen in the hematoma. ? 需緊急處理 Acute Epidural Hematoma 血塊內(nèi)含較灰區(qū) (箭 ), 代表正 在出血中,有未凝結(jié)的血塊 EDH:紡垂型,高濃度血塊 頭皮腫 (箭 ),撞擊處 Acute Subdural Hematoma ? Sickleshape (鐮刀型 ) or new lunar shape (新月型 ) of hyperdense lesion over large portion of cerebral hemisphere ? The hematoma may extending into the subdural space of tentorial region or interhemispheric fissure SDH:新月型 () SDH可能在 interhemispheric fissure內(nèi) (C)。 SDH也可在 tentorium下 (D) (不要誤為腦內(nèi)出血 ) A B C D Acute Subdural Hematoma Chronic Subdural hematoma ? Shape: Se
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