The Study on MR Perfusion Weighted Imaging of Brain Metastases / 实用放射学杂志

ABSTRACT

Objective To study the findings of brain metastases with MR perfusion weighted imaging(PWI).Methods PWI and conventional contrast MR were performed in 20 patients with brain metastases.The diameters of metastases were measured on conventional contrast MR images.The rCBV pseudo-color map was generated using packaged software FUNCTOOL and the rrCBV of peripheral and central part of lesions,perilesional edema were measured.Results 55 lesions were showed on conventional contrast MR images.On the rCBV pseudo-color map,19 lesions were inhomogeneously enhanced while the other 36 lesions were homogeneously unenhanced equal and to contralateral cortex.The diameters of the two groups were statistically different.Conclusion Brain metastases may have different features on PWI images,which are dependent on their sizes.