Biomedical Engineering Reference
In-Depth Information
Oscillator
Amplifier
Power
Tuner
Ferrite applicator
Shield
S (N)
N (S)
N (S)
S (N)
1 cm
Subcutaneous
adipose
Heating object
(a)
(b)
FIGURE 4.24
Inductive regional heating system for breast hyperthermia.
7.0 mm
Sheath
5.0 mm
Microchip
condenser
Small coil
2.0 mm
7.7 mm
FIGURE 4.25
Structure of implant.
corresponds to the highest temperature. We can verify that the heating posi-
tion is well controlled by moving the outside ferrite core vertically.
Another special feature of inductive heating is that it is able to cause local
heating. It is well known that, by applying an alternating magnetic field to some
materials that can be heated by eddy currents and magnetic loss, local heating
becomes possible by implanting these materials in the lesion position. Various
kinds of implant have thus far been proposed using magnetic materials [17-24]
Search WWH ::
Custom Search