Contrast enhancement in the postoperative brain.
Contrast enhancement in the postoperative brain.
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术后大脑对比度增强。
DOI：
10.1148/radiology.139.2.7220887
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发表时间：
1981
期刊：
影响因子：
19.7
通讯作者：
Krempa,J
中科院分区：
文献类型：
--
作者：
Jeffries,BF;Kishore,PR;Singh,KS;Ghatak,NR;Krempa,J
在术后的头颅计算机断层扫描（CT）中，曾描述过类似脓肿或残留肿瘤的对比增强。本研究以犬脑为实验模型，探讨了脑电造影增强的原因。在右半球部分切除后进行增强和不增强的连续CT扫描，并将CT表现与组织学改变相关联。研究结果表明，手术切缘的增强与手术后的新血管形成在时间和空间上都相关。手术边缘的环状强化在术后2 - 4周最明显，可能与脓肿相似。然而，在此期间，在术后增强的情况下，邻近脑脓肿周围的水肿是不存在的或最小的，这一特征有助于区分这些实体。
Contrast enhancement simulating an abscess or residual tumor has been described in postoperative cranial computed tomography (CT) scans. This study was undertaken to determine the cause of this contrast enhancement by using canine brain as an experimental model. Sequential CT scanning was performed with and without contrast enhancement following partial resection of the right hemisphere, and the CT findings were correlated with the histological changes. Findings indicate that enhancement of the surgical margin is related both temporally and spatially to the neovascularity following surgery. The ring-like enhancement around the surgical margin is seen best at two to four weeks after surgery, and may simulate an abscess. However, edema seen around an abscess in adjacent brain is absent or minimal in the case of postoperative enhancement during this period, and this feature should help differentiate these entities.