Zwamborn, A.P.M.

antenna frequency patient target exposure effect hyperthermia volume study model result region 433 mhz figure distribution array distance health ratio antenna rings value setup tissue neck volume target region applicator int j hyperthermia anatomy temperature number pattern focus -0.1 0.1 treatment field calculation target volume pa distributions radius neck region absorption position tumours influence investigation increase electromagnetic temperature increase heating power 915 mhz set-up guideline pa values level antenna elements arrangement amount dipole antenna ring radius exposure limits 0.05 range phase radiation -0.05 depth h &n tumours time –temperature thresholds pa pattern series ht position apa ratio 550 mhz target volumes limit threshold health effects 20 cm