Table 2.

Mean absolute difference in resection cavity position relative to the skull bone between MRI 1 and 2. The difference between skull-near and skull-distant resection cavity borders was statistically significant (p < 0.001), even after accounting for the interval between MRI 1 and 2. MRI = magnetic resonance imaging; SD = standard deviation.

	Total	Skull-Near (≤25 mm)	Skull-Distant (>25 mm)
number of measurements (n)	168	64	104
mean difference ± SD (mm)	3.04 ± 3.90	0.50 ± 1.40	4.61 ± 4.12
minimum (mm)	0	0	0
maximum (mm)	22.1	9.6	22.1