脑肿瘤复发与放射性坏死的影像学鉴别

The Differential Diagnosis of Brain Neoplasm Recurrence and Radiological Necrosis in Medical Image

随着放射治疗在脑肿瘤的广泛应用,引起放射性坏死的机会明显增加。准确、早期的鉴别肿瘤复发和放射性坏死直接影响着治疗方法的选择和预后。目前多数学者认为常规CT和MRI不能准确的鉴别脑肿瘤复发与放射性坏死,本文介绍了新的影像学方法(CT、MRI灌注,Xe-CT,MRI弥散成像,波谱分析,SPECT,PET)对其鉴别的价值。

With the widely application of the radiotherapy in brain tumor, the chance of radionecrosis become significant important. Accurately and early differentiating tumor recurrence from radiation necrosis may directly affect the treatment decision and prognosis of the patients. At the present, most of the researchers believe that the conventional CT or MRI cannot provide veracious differentiation. This article will introduce the advanced medical imaging ways （CT, MRI perfusion, Xe-CT, MR DWI,MRS,SPECT and PET） in the differentiation between brain tumor recurrence and radiation necrosis.