Early detection and treatment of certain malignant tumors

Horváth, Zsolt

doi:10.14232/phd.829

Cited by 1 publication

(1 citation statement)

References 112 publications

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“…Seus resultados foram confirmados em modelos [41,42,29]. Posteriormente, tentativas esporádicas foram feitas no tratamento de tumores humanos por radiofrequência Schliephake [43], micro-ondas (80 cm) Denier [44] e ultrassom Horvath [45,46]. Apesar desses resultados extensivos e o desenvolvimento de novos métodos de geração de calor, a aplicação clínica da hipertermia continua restrita, principalmente devido ao desenvolvimento de outros tipos de tratamento de câncer usando cirurgia, radiação e quimioterapia, mais simples e eficientes até então, devido à dificuldade de aplicar calor e medir temperaturas na hipertermia.…”

Section: História E Aplicaçãounclassified

Determinação da hipertermia em tecidos vivos, gerada através de ondas eletromagnéticas, utilizando o método dos elementos de contorno

Millan¹,

Palermo²

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The problem of heat transfer with temperature control including a genetic algorithm for optimization of the process is studied in this work. The problem occurs in the cancer therapy called hyperthermia in which tissue around the tumor is heated to about 40 ºC by a set o antennas that involve the patient, with phase orientation and directed to a spot that receives heat due the incidence of electromagnetic waves. The problem o heat transfer in biosystems employs the Pennes' equation and Maxwell's equations for determining the electric and magnetic field. A two-dimensional model is studied with the Boundary Element Method including the Dual Reciprocity Method (DRBEM). The heterogeneity of the medium can be treated with the combination of various homogeneous media by the inclusion of sub-regions in the DRBEM. It is proposed a new approximating function for DRBEM to treat the domain effects of the integral equations related to Maxwell's and Pennes' equations in steady state, reduced to nonhomogeneous Helmholtz equations. The convergence of the function is evaluated in examples with simple geometry. The model was tested for a case with tumors in different depths been the results compared with the available literature.

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Section: História E Aplicaçãounclassified

Determinação da hipertermia em tecidos vivos, gerada através de ondas eletromagnéticas, utilizando o método dos elementos de contorno

Millan¹,

Palermo²

View full text Add to dashboard Cite

show abstract

Early detection and treatment of certain malignant tumors

Cited by 1 publication

References 112 publications

Determinação da hipertermia em tecidos vivos, gerada através de ondas eletromagnéticas, utilizando o método dos elementos de contorno

Determinação da hipertermia em tecidos vivos, gerada através de ondas eletromagnéticas, utilizando o método dos elementos de contorno

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