Orientated thermotherapy of ferromagnetic thermoseed in hepatic tumors

Table 1 Temperature changes at the centre and boundary of the tumors (^-x±s, °C)

Heating time (min)	Centre of tumor	Boundary of tumor
5	42.93 ± 1.10	34.91 ± 0.81
10	46.90 ± 1.14	35.41 ± 1.00
20	47.38 ± 1.52	35.94 ± 1.03
30	50.02 ± 2.46	38.13 ± 1.42
40	49.67 ± 2.68	38.92 ± 2.33
50	49.74 ± 3.12	39.22 ± 2.94

Table 2 Survival period of mice after thermotherapy (^-x±s)

Groups	n	Survival time (d)
Untreated control group	8	50.1 ± 12.2
Thermoseed group	8	38.6 ± 8.8
Electromagnete group	8	46.0 ± 12.1
Heat-treated group	7	123.1 ± 45.9a

^aP < 0.01 vs untreated control group.