1 0:48 Pocahontas Trailer Pocahontas When English settlers land on the shores of her village, a free-spirited girl wonders what history-changing adventures await.
The gray (Gy), which is the SI unit of absorbed dose, corresponds to the absorption of 1 J of energy per kilogram of tissue. The rad (radiation absorbed dose) corresponds to the absorption of 1 10â2 J of energy per kilogram of tissue. Thus, 1 Gy = 100 rads. The rad is the unit most often used in medicine.
Ultrasound is absorbed in the body primarily. by bone, followed by nervous tissue, and last by. muscle tissue. This is believed to be due to the. high protein concentrations of these substances. Ultrasound easily penetrates the less homoge-. neous tissues such as water, blood plasma, and. whole blood.'.