Figure 2.

Patient distributions for each of the six texture/shape features. Red dots represent high-grade meningiomas, and green dots represent low-grade meningiomas. For features 1, 2, 4, and 5, the values for high-grade meningiomas are generally higher than those for low-grade meningiomas. In contrast, for features 3 and 6, the values of low-grade meningiomas are generally higher than those for high-grade meningiomas. This observation is consistent with Mann–Whitney test results, which indicated that all the features were significantly different between the two meningioma groups.