Intracranial Meningiomas: Comparative Study on MR Imaging and Histology / 实用放射学杂志

ABSTRACT

Objective To study the correlations between MR imaging and histological classification of intracranial meningiomas.Methods MR imaging findings of 128 cases of intracranial meningiomas proved by operation and pathology were analyzed retrospectively.Results On T 1-weighted images,29(49%) meningothelial meningiomas were hypointense, 11(19%) were slightly hypointense and 17(29%) were isointense, while fibrours meningiomas were respectively in 23(59%),5(13%) and 9(23%). On T 2-weighted images, 34(58%) meningothelial meningiomas were hyperintense, 15(25%) were slightly hyperintense and 10(17%) were isointense, while fibrours meningiomas were in 2(5%),8(20.5%) and 11(28%) respectively. Most of the intracranial meningiomas such as meningothelial, fibrours and transitional were iso- and hypo-intense to the cortex on T 1-weighted imaging. On T 2-weighted imaging, meningothelial, angiomatous and transitional were hyperintense or slightly hyperintense, while fibrous tended to be hypointense or slightly hypointense. Conclusion The signals of meningiomas of different histologic type on T 1-weighted images are no significant different.On T 2-weighted images,there are significant correlation between signal intensity and tumor histology.