Differentiation of Radiation-Injuries and Tumor Recurrence Using Perfusion-weighted imaging
نویسنده
چکیده
The differentiation of progressive or recurrent brain tumor from radiation injury after radiotherapy is difficult using conventional MR imagings(MRI) [1]. Accurate diagnosis of tumor recurrent or radiation injury is critical to determining therapy [2]. Perfusion-sensitive contrast-enhanced MR imaging(PWI), which has made it possible to obtain measurements of vascularity within brain lesions, may be useful in differentiation of tumor recurrence within irradiated lesions and radiation necrosis [3]. Our aim was to evaluate the PWI in the characterization of newly developed enhancing lesions within irradiated regions after the treatment of brain tumor.
منابع مشابه
Differentiation between brain tumor recurrence and radiation injury using perfusion, diffusion-weighted imaging and MR spectroscopy.
BACKGROUND Differentiation between tumor recurrence/vital tumor tissue and radionecrosis based on conventional diagnostic imaging is impossible because of the likeness of the images. In such circumstances advanced MRI techniques (PWI, DWI, 1HMRS) seem to be helpful. The aim of our study was to evaluate the diagnostic effectiveness of PWI, DWI and 1HMRS in the differentiation of the tumor recurr...
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