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Figure 2. Hi-Heater 5010 radiator with another coil unit for distal cancer treatment (<b>a</b>) Overviewing; (<b>b</b>) Trial product of hat-shaped coil; (<b>c</b>) Radiation unit composed of hat-shaped coil (black and gray) and protrusive ferrite core (blue); (<b>d</b>) Scheme in use.

Figure 3. Public and professional exposure limits of HTS-5010H radiator, according to ICNIRP guide line, public (6.25μT, blue line) and professional (18μT, red line) exposure limits of 100kHz magnetic flux density were tested under output power 10kW.

Figure 4. Tools for calibration of 100kHz magnetic flux density (<b>a</b>) Vacant solenoid coil at 100kHz; (<b>b</b>) Optic temperature probe (upper) was inserted in 1mm hole of magnetite containing phantom block (lower).

Figure 5. Calibration of 100kHz magnetic flux density using magnetite containing phantom blocks, temperature rise of phantom blocks during 5 min was tested under density-tuned conditions with variation of magnetite contents; 60 mg (⊡), 40mg (△), 20mg (■), 15mg (🔷) and 10mg (〇) magnetite. Exceptionally, for calibration over 30mT, temperature rise during 2.5min was tested with 15mg magnetite block (▲). Red dotted arrows showed calibration example as described later.

Figure 6. Density distribution profile of HTS-5010H and Hi-Heater 5010 radiator (<b>a</b>) Test scheme of HTS-5010H radiator; (<b>b</b>) Test scheme of Hi-Heater 5010 radiator; (<b>c</b>) Density distribution profile of HTS-5010H radiator; (<b>d</b>) Density distribution profile of Hi-Heater 5010 radiator. Red circles showed the radiation conditions of rat tumor treatment conducted under no clearance condition [13,14].

Figure 7. Body sites radiated with HTS-5010H radiator, red circles showed body sites of each patient radiated with 7cm Φ coil of HTS-5010H radiator.

Figure 8. Density distribution in patient body shown from skin surface to inner body, each patient (Pts) was radiated at each body site (<b>Figure 7</b>) under annotated output power (kW) and clearance C (mm).