[Evaluation of 28 cases of salivary malignancies with MR imaging].

Twenty-eight cases of MRI of the salivary malignancies confirmed histopathologically were shown in this paper.By observing separately and comparatively with SE (spin echo) T2 weighted imaging and PE(field echo) imaging,the authors consider that (1)the malignant tumors within the salivary glands displaying low and intermediate signal intensities on T2 weighted image may be thought as a characteristic sign in the diagnostic processes. (2) PE imaging as an effective method is able to differentiate the tumors from the calcification and fibrosis which were low and intermediate signal intensities on T2 weighted image. (3)the locations and sizes of the tumors have directly influenced on their marginal manifestations and adjacent normal tissue structures.