Laster D W, Moody D M, Ball M R
AJR Am J Roentgenol. 1978 May;130(5):935-9. doi: 10.2214/ajr.130.5.935.
A ring of contrast enhancement is seen on CT scans of resolving intracerebral hematomas. This ring can be modified with steroid administration in the early stages; however, enhancement seen in the later stages is not affected. Evidence suggests that the early ring is due to blood-brain barrier breakdown, and the later enhancement is due to vascular granulation tissue. The following six stages of hematoma resorption were identified depending on the hematoma density, the presence or absence of a ring of enhancement, and the response of the ring to steroid administration: I = dense hematoma without enhancement; II = decreasing density, enhancement, modification of enhancement with steroid; III = isodense hematoma, enhancement, modification with steroid; IV = lucent hematoma, enhancement, modification with steroid; V = lucent hematoma, enhancement, no modification with steroid; and VI = healed, no enhancement.
在正在消散的脑内血肿的CT扫描上可见一圈强化影。在早期阶段，给予类固醇可改变这一圈强化影；然而，后期出现的强化不受影响。有证据表明，早期的强化圈是由于血脑屏障破坏，而后期的强化是由于血管肉芽组织。根据血肿密度、强化圈的有无以及强化圈对类固醇给药的反应，确定了血肿吸收的以下六个阶段：I = 高密度血肿，无强化；II = 密度降低，有强化，类固醇可改变强化；III = 等密度血肿，有强化，类固醇可改变强化；IV = 低密度血肿，有强化，类固醇可改变强化；V = 低密度血肿，有强化，类固醇不能改变强化；VI = 已愈合，无强化。
