Table 2.

Patient demographics, with astrocytic tumours and tumour grading

		Grade II	Grade III	Grade IV
Number of patients		9	4	9
Gender	Male	5 (55.6 %)	3 (75.0 %)	6(66.7 %)
	Female	4 (44.4 %)	1 (25.0 %)	3(33.3 %)
Age [mean (range), years]	Male	37.4 (15–61)	46.3 (24–67)	57.5 (42–71)
	Female	32.5 (17–45)	35.0 (35)	43.0 (10–65)
Tissue sampling (biopsy)	Total or partial resection	5	4	6
	Stereotactic biopsy	4	0	3
Time delay between MRS and histology [median (range), months]		2 (0.03–96.00)	1.5 (0.33–5.00)	0.6 (0.07–17.0)