刊期详情

Head and Neck Imaging订阅

MRI and Perfusion Imaging Analysis of Radiation-induced Brain Injury

Author：YANG Yu, HUANG Yan-fang, ZHOU Zhi-hui, et al

affiliation：Department of Radiology, the First Hospital of Hunan University of TCM, Changsha 410007, Hunan Province, China

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Abstract

Objective To discuss the imaging features of radiation-induced brain injury. Methods A retrospective analysis of 31 cases of radiation-induced brain injury in our hospital has been carried out. The MRI features were analyzed according to the open and closed ring, the tension and morphology changes of the ring,ASL-CBF perfusion and the DWI signal analysis. Results ①4 cases showed closed ring with tension. 23 cases with closed loop ring with no tension, 4 cases with open ring. ②26 cases presented low perfusion, perfusion in 1 case and edge part high perfusion in 4 cases. ③Rings of 17 cases reduced with time while 11 enlarged and 3 cases had no change. Besides,9 cases had no morphological changes while 22 cases had. ④DWI signal:high signal of 11 cases is located in the inner ring, 17 cases showed high signal and 3 cases were like patchy high signal. Conclusion The CBF present low perfusion in MRI mostly; The brain damage caused by brain external lesions showed the DWI high signal is located in the inner enhancement ring, it can increased with time, but the shape didn't change.

【Keyword】Radiation-induced Brain Injury; Ring Enhancement; Perfusion Imaging

【Chart number】R651.1+5

【Document Identification Number】A

【DOI】 10.3969/j.issn.1672- 5131.2016.06.001

Chinese journal of CT and MRI

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