Table 2.

Characteristics of three groups: patients with the same number of tumors on both Tc-99m MAA scan and bremsstrahlung images (Group 1), patients with fewer tumors on bremsstrahlung images than Tc-99m MAA scan (Group 2), and patients with no visible tumors on both images (Group 3) (*p < 0.005)

	Group 1	Group 2	Group 3
No. of cases	8	11	3
Age (years)	72.6 ± 7.2	59.7 ± 9.4	64.3 ± 9.9
Sex (M/F)	7/1	11/0	2/1
Volume of tumors (ml)	101.6 ± 92.2	318.6 ± 335	9.8 ± 5.3
No. of visible tumors	1.4 ± 0.5*	5.5 ± 3.0*	0
Tumor-to-normal ratio	3.1 ± 0.6	3.6 ± 1.9	ㅡ
Injected Y-90 dose (GBq)	0.98 ± 0.47	1.57 ± 0.85	0.49 ± 0.21