The RF toroidal transformer as a heat delivery system for regional hyperthermia

Tiberio, C.A.; Raganella, L.; Banci, G.; Franconi, Cafiero

doi:10.1109/10.8693

Cited by 13 publications

(2 citation statements)

References 16 publications

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“…The composition of polyacrylamide-based materials, in particular, can be adjusted to mimic the electrical and thermal properties of various types of human tissue [1][2][3] . As a result, these materials have been used extensively to evaluate radiofrequency (RF) and microwave applicators for hyperthermia and thermal therapy [4][5][6][7][8][9][10][11][12][13][14][15][16] , to validate numerical simulations of RF and microwave-based hyperthermia treatments 13,[17][18][19] and to evaluate the use of various thermometry techniques in RF and microwave hyperthermia [20][21][22][23][24][25][26] .…”

Section: Introductionmentioning

confidence: 99%

Measurement of the thermal conductivity of polyacrylamide tissue-equivalent material

Davidson

Sherar

2003

International Journal of Hyperthermia

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The purpose of this work was to measure the thermal conductivity of polyacrylamide (PAG) and compare it with previously reported values. Polyacrylamide phantoms play an important role in the development of hyperthermia and high-temperature thermal therapies based on electromagnetic (EM) radiation by providing a material that mimics the electrical and thermal properties of human tissue. The thermal properties of PAG have, up until now, not been thoroughly investigated and at least two significantly different values have been published. In this study, the thermal conductivity of polyacrylamide was measured from the steady state temperature drop across samples exposed to a known heat flux. The measured conductivity was 0.56 +/- 0.047 W m(-1) degrees C(-1). To validate the correct set of thermal properties for polyacrylamide, simple heating experiments were performed in a PAG phantom and then simulated using a finite element numerical model that incorporated the measured thermal conductivity along with literature values for specific heat and density. Temperature predictions from the model agreed with average temperatures measured in the phantom to within 1 SD of the measured temperatures.

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Section: Introductionmentioning

confidence: 99%

Measurement of the thermal conductivity of polyacrylamide tissue-equivalent material

Davidson

Sherar

2003

International Journal of Hyperthermia

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“…Low frequency technique is possible for deep treatment, though. The temperature in a cancer cell can be increased by induction [18][19][20][21][22][23][24][25][26]. To induce heat in the cancer cell, strong magnetic field has to penetrate the cancer cell to generate eddy current in the cell which can be visualized as electric loss.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of Magnetic Shielding System for Breast Cancer Treatment with Hyperthermia Inductive Heating

Thongsopa

Thosdeekoraphat

2013

International Journal of Antennas and Propagation

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An analysis and design of magnetic shielding system are presented for breast cancer treatment with hyperthermia inductive heating. It is a technique to control magnetic field intensity and relocate the heating area by using a rectangular shielding with aperture. The distribution of the lossy medium was analyzed using the finite difference time domain method. Theoretical analyses investigate whether a novel shielded system is effective for controlling the magnetic field distribution or heating position. Theoretical and experimental investigations were carried out using a lossy medium. The inductive applicator is a ferrite core with diameter of 7 cm, excited by 4 MHz signal and a maximum output power of 750 W. The results show that size of heating region can be controlled by varying the aperture size. Moreover, the investigation result revealed that the position of heating region can be relocated by changing the orientation of the ferrite core with shielded system in -axis direction. The advantage of the magnetic shielding system is that it can be applied to prevent the side effects of hyperthermia cancer treatment by inductive heating.

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Recent Technical Developments in Cancer Hyperthermia

Chou¹,

Luk²

1990

Emerging Electromagnetic Medicine

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The RF toroidal transformer as a heat delivery system for regional hyperthermia

Cited by 13 publications

References 16 publications

Measurement of the thermal conductivity of polyacrylamide tissue-equivalent material

Measurement of the thermal conductivity of polyacrylamide tissue-equivalent material

Analysis and Design of Magnetic Shielding System for Breast Cancer Treatment with Hyperthermia Inductive Heating

Recent Technical Developments in Cancer Hyperthermia

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