Evaluation of CT perfusion imaging on follow up study after operation of astrocytoma

ObjectiveTo explore the value of the CT perfusion on follow up studies after the operation of astrocytoma. MethodsThe routine CT examinations and CT perfusions were performed on 19 cases with partially resected astrocytoma. The follow up CT perfusion studies were done on another 26 cases whose astrocytomas were completely resected. ResultsAfter the radiation therapy of the residual tumors, only PS in the low grade astrocytoma decreased significantly. However, the CBF, CBV, and PS of high grade astrocytoma significantly decreased ( P 0.05). After complete resection, the CBF, CBV, and PS in the operation areas of astrocytoma showed no significant difference from those of normal brain white matters ( P 0.05). ConclusionCT perfusion is feasible to monitor the effects of radiation therapy of residual astrocytomas.