Assessment of angiographic vascularity of meningiomas with dynamic susceptibility contrast-enhanced perfusion-weighted imaging and diffusion tensor imaging

CH Toh, KC Wei, CN Chang… - American Journal …, 2014 - Am Soc Neuroradiology
CH Toh, KC Wei, CN Chang, YW Peng, SH Ng, HF Wong, CP Lin
American Journal of Neuroradiology, 2014Am Soc Neuroradiology
BACKGROUND AND PURPOSE: The roles of DTI and dynamic susceptibility contrast-
enhanced–PWI in predicting the angiographic vascularity of meningiomas have not been
studied. We aimed to investigate if these 2 techniques could reflect the angiographic
vascularity of meningiomas. MATERIALS AND METHODS: Thirty-two consecutive patients
with meningiomas who had preoperative dynamic susceptibility contrast-enhanced–PWI,
DTI, and conventional angiography were retrospectively included. The correlations between …
BACKGROUND AND PURPOSE
The roles of DTI and dynamic susceptibility contrast-enhanced–PWI in predicting the angiographic vascularity of meningiomas have not been studied. We aimed to investigate if these 2 techniques could reflect the angiographic vascularity of meningiomas.
MATERIALS AND METHODS
Thirty-two consecutive patients with meningiomas who had preoperative dynamic susceptibility contrast-enhanced–PWI, DTI, and conventional angiography were retrospectively included. The correlations between angiographic vascularity of meningiomas, classified with a 4-point grading scale, and the clinical or imaging variables—age and sex of patient, as well as size, CBV, fractional anisotropy, and ADC of meningiomas—were analyzed. The meningiomas were dichotomized into high-vascularity and low-vascularity groups. The differences in clinical and imaging variables between the 2 groups were compared. Receiver operating characteristic curve analysis was used to determine the diagnostic performance of these variables.
RESULTS
In meningiomas, angiographic vascularity correlated positively with CBV but negatively with fractional anisotropy. High-vascularity meningiomas demonstrated significantly higher CBV but lower fractional anisotropy as compared with low-vascularity meningiomas. In differentiating between the 2 groups, the area under the curve values were 0.991 for CBV and 0.934 for fractional anisotropy on receiver operating characteristic curve analysis.
CONCLUSIONS
CBV and fractional anisotropy correlate well with angiographic vascularity of meningiomas. They may differentiate between low-vascularity and high-vascularity meningiomas.
American Journal of Neuroradiology
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