Title :
A numerical investigation of SAR uniformity in exposed cultures for in vitro experiments
Author :
Pelletti, Chiara ; Rogovich, Alessandro ; Monorchio, Agostino
Author_Institution :
Dept. of Inf. Eng., Univ. of Pisa, Pisa, Italy
Abstract :
A uniform specific absorption rate (SAR) throughout the sample being exposed to radio frequency electromagnetic fields is produced to avoid artifacts due to thermal hot-spots and to provide accurate dosimetry. The in-vitro uniformity exposure of blood tissue in the far field region of a horn antenna has been numerically investigated employing a FDTD code. The electric field distribution in a cylindrical test tube has been derived, furthermore the biological material has been exposed among two metal parallel plates to improve SAR uniformity. Further modifications, as the introduction of a polypropylene septum at its interior have been analyzed.
Keywords :
biological effects of microwaves; biological tissues; blood; dosimetry; finite difference time-domain analysis; horn antennas; FDTD; SAR; blood tissue; electric field distribution; horn antenna; in-vitro uniformity; polypropylene septum; radiofrequency electromagnetic fields; thermal hot-spots; uniform specific absorption rate; Blood; Dosimetry; Electromagnetic fields; Finite difference methods; Horn antennas; In vitro; Materials testing; Radio frequency; Specific absorption rate; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5171662
