RESUMO
This paper describes heating properties of the developed coaxial needle applicator made of a shape memory alloy (SMA) for brain tumor hyperthermia treatments to avoid undesirable hotspots. We estimated the temperature distribution inside an agar phantom by the finite element method (FEM) and heated the agar phantom with the developed needle applicator.
Assuntos
Neoplasias Encefálicas/fisiopatologia , Neoplasias Encefálicas/terapia , Ablação por Cateter/instrumentação , Hipertermia Induzida/instrumentação , Modelos Biológicos , Agulhas , Temperatura Corporal , Simulação por Computador , Desenho de Equipamento , Análise de Falha de Equipamento , Calefação/instrumentação , Humanos , Resultado do TratamentoRESUMO
In Thailand, the first human cases of spotted fever group rickettsiosis were reported in 1994, but no serosurveys on wild rats have yet been conducted. We investigated the seroepidemiology in wild rats collected in the 1970s from two regions in Thailand, and found a 62.2% positive rate of antibodies for spotted fever group rickettsia (SFGR) by the indirect immunofluorescence antibody test. Of the antibody-positive rats, 82.2% had higher titers of antibodies against TT-118 than those against Rickettsia japonica, which suggests that Thailand is infested mainly with the TT-118 strain or its antigenically related organisms. The prevalence of antibodies in Bandicota indica was significantly higher than that in other species, which suggests that B. indica is important as a reservoir of SFGR in Thailand.