Table 3.

Summary of gross tumor volume, brainstem, right cochlea and left cochlea recorded from contours on computed tomography (CT) as well as T1- and T2-wighted magnetic resonance (MR) image sets (N: number of patients, SD: standard deviation, CI: 95% confidence interval).

Variable	N	Mean	SD	Minimum	Median	Maximum	Pair test	N	Pearson's r	95% CI	p-value
GTV_’CT	43	5.152	5.253	0.251	3.484	27.266	GTV_’CT, T1	43	0.971	0.945–0.985	<0.0001
GTV_’T1	43	5.876	6.166	0.385	4.196	36.231	GTV_’CT, T2	43	0.973	0.949–0.986	<0.0001
GTV_’T2	43	5.637	5.976	0.378	4.53	35.101	GTV_’T1, T2	43	0.995	0.991–0.998	<0.0001
Brain Stem: CT	43	19.157	3.461	14.36	18.66	25.12	Brain Stem: CT, Brain Stem: T1	43	0.894	0.811–0.941	<0.0001
Brain Stem: T1	43	20.253	4.473	15.99	18.48	31.5	Brain Stem: CT, Brain Stem: T2	43	0.957	0.922–0.977	<0.0001
Brain Stem: T2	43	19.265	4.48	13.88	18	28.93	Brain Stem: T1, Brain Stem: T2	43	0.85	0.739–0.917	<0.0001
Rt Cochlea: CT	43	0.152	0.057	0.04	0.142	0.277	Rt Cochlea: CT, Rt Cochlea:T1	43	0.381	0.091–0.612	0.0116
Rt Cochlea: T1	43	0.147	0.051	0.052	0.152	0.235	Rt Cochlea: CT, Rt Cochlea: T2	43	0.696	0.5–0.824	<0.0001
Rt Cochlea: T2	43	0.239	0.111	0.083	0.205	0.506	Rt Cochlea: T1, Rt Cochlea: T2	43	0.597	0.36–10.761	<0.0001
Lt Cochlea: CT	43	0.152	0.045	0.082	0.163	0.246	Lt Cochlea: CT, Lt Cochlea: T1	43	0.752	0.583–0.858	<0.0001
Lt Cochlea: T1	43	0.135	0.042	0.067	0.127	0.199	Lt Cochlea: CT, Lt Cochlea: T2	43	0.772	0.614–0.871	<0.0001
Lt Cochlea: T2	43	0.221	0.101	0.089	0.19	0.514	Lt Cochlea: T1, Lt Cochlea: T2	43	0.478	0.207–0.680	0.0012