Zimmerman R D, Leeds N E, Naidich T P
Radiology. 1977 Mar;122(3):707-11. doi: 10.1148/122.3.707.
Seven cases of ring blush following spontaneous and post-traumatic, subacute and chronic intracerebral hematoma are presented. As such a hematoma ages, a ring blush may be seen following contrast-agent enhancement. Serial CT demonstrates disappearance of the ring blush from two to six months after the first scan. The CT appearance of the ring blush is not specific for hematoma, but its peripheral location and lack of mass effect may be considered suggestive of hematoma with appropriate clinical findings. The characteristic serial changes permit correct diagnosis without surgical intervention in most cases.
本文报告了7例自发性和创伤后亚急性及慢性脑内血肿后出现环形强化的病例。随着这种血肿的老化，在注射造影剂增强后可能会出现环形强化。连续CT显示，环形强化在首次扫描后2至6个月消失。环形强化的CT表现对血肿并无特异性，但结合适当的临床发现，其位于外周且无占位效应可能提示为血肿。其特征性的连续变化使得在大多数情况下无需手术干预即可做出正确诊断。
