Arterial spin labeling in the grading of brain gliomas: could it help?

Egyptian Journal of Radiology and Nuclear Medicine

Table 3 ASL findings in the studied groups

	Group 1 Low grade (n = 14)	Group 2 High grade (n = 21	Test of sig.	p
ASL absolute CBF (lesion)
Mean ± SD.	32.4 ± 25.4	91.9 ± 74	U = 47.50^*	< 0.001^*
Median (min.–max.)	17 (14–78.5)	60 (40.3–305)	U = 47.50^*	< 0.001^*
ASL relative CBF (WM)
Mean ± SD.	1.2 ± 0.91	4.1 ± 2.6	U = 22.0	< 0.001^*
Median (min.–max.)	0.70 (0.62–3)	4.1 (1.2–11.3)	U = 22.0	< 0.001^*

U Mann-Whitney test, p p value for comparing between the studied groups, *statistically significant at p ≤ 0.05