CT-MR Image Fusion for Post-Implant Dosimetry Analysis in Brain Tumor Seed Implantation- a Preliminary Study

Table 3

Correlation analysis of factors associated with the fusion-CT CTV ratio.

	D90fusion/CT	V100fusion/CT	Total V100	Implanted seed number
	1.19 ± 0.17	0.96 ± 0.04	36.16 ± 35.79	25.44 ± 17.58
Pearson r	-0.697	0.771	0.306	0.271
p	0.003	<0.001	0.249	0.309
Correlation	Significant	Significant	Low	Low

= mean±standard deviation; V_fusion/CT = ratio of CTV on fusion images to CTV on CT images; V100_fusion/CT = ratio of V100 on fusion images to V100 on CT images; Total V100 = total volume of the V100 dose cloud.