Table 4.

Associations of brain region volumes obtained from quantitative MRI volumetry with visual field defects in dichotomous and continuous scales. HV = presurgical hippocampal volume; GMV,WMV,PLV, TV = postsurgical 36 month grey, white matter, perilesional, and total volume losses at the surgical target; T2V = postsurgical T2weighted edema at 12 months after stereotactic radiosurgery. VFD = blinded interpretation of visual field perimetry. Volumes = mm3. a P value from Mann-Whitney U test for the difference in brain region volume between VFD and No-VFD. b Spearman correlation coefficient (VFDR CC) between VFDR and brain region volume with pvalue.

	SRS					ATL
Region	VFD	No VFD	P valuea	VFDRCCb	VFDR P value b	VFD	No VFD	P valuea	VFDR CCb	VFDR P value b
HV	2381±283	1961±561	0.14	−.433*	0.024	2180±1100	1971±422	1	0.11	0.634
GMV	1192	1636±2560	0.6	−0.036	0.881	5387	10581±3750	0.27	.601*	0.018
WMV	159	1636±2560	0.94	0.335	0.188	1184	3109±1158	0.13	0.382	0.16
PLV	1330±325	1491±959	0.89	0.263	0.195	103	794±556	0.13	−0.146
TV	2911	3875±2817	1	0.154	0.555	6673	14362±4559	0.27	.556*	0.031
T2V	57±80	24±34	0.76	−0.104	0.597