Year: 2011
Type: article
Abstract: In a previous study, an apparatus generating 1.8 GHz electromagnetic radiation for `` in vivo '' biomedical study was designed and implemented. The apparatus consisted of a reverberation chamber and it reproduced a habitat similar to the usual one for the laboratory animals. Plexiglas boxes with 300 cc physiological liquid were utilized as simple phantoms. For the measurements a small Electric Field Probe was used. The maximum SAR (Specific Absorption Rate) and average Power Efficiency Pe (SAR/input power) values obtained were quite low (`` in vivo experiments'') and this was the drawback of the apparatus. In the present work, different modifications introduced in order to increase SAR and Power Efficiency are presented. In the new configuration, the dosimetry for the previous phantoms and for oil-in-gelatine phantoms was investigated and quite satisfactory SAR and Power Efficiency values were obtained, overcoming the previous drawback. In the first case the sensor was waterproofed, as in the previous study; in the other case a Plexiglas box with inside a tight shaped allocation for the measurement probe was realized. These measurement technologies could be applied to other media used for the phantoms.
Source: Journal of Instrumentation
Authors: P Francesco Biagi, F Righetti, T Maggipinto, G Maggipinto, T Ligonzo, L Schiavulli, D Loiacono, G Casamassima, G De Carne, G Laterza, A Ermini, M Lasalvia, G Perna, V Capozzi
Language: English
Subfield: Biophysics
Domain: Life Sciences
Open Access status: bronze
Funder: Regione Puglia
OpenAlex ID: W1981067973