The relationship between localised SAR in the arm and wrist current.
Calculations are presented of the specific energy absorption rate, SAR, in the lower arm of the NRPB anatomically realistic voxel model. NORMAN, for induced currents from 100 kHz to 80 MHz. The wrist region has a narrow cross section and contains little high conductivity muscle, comprising mainly low conductivity bone, tendon and fat. Consequently there is a channelling of the current through the high conductivity muscle, which produces high, localised values of the SAR. Values averaged over 10 g and 100 g of tissue are calculated as a function of the current flowing through the wrist.
Dimbylow
P J
PJ
National Radiological Protection Board, Chilton, Oxon, UK.
D000042:Absorption; D001132:Arm / Q000528:radiation effects*; D004574:Electromagnetic Fields; D006801:Humans; D008953:Models, Anatomic; D009928:Organ Specificity; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D011874:Radiometry / Q000379:methods*; D014953:Wrist / Q000528:radiation effects*