1) If an arm of a patient is to be imaged with a narrow beam of X-ray with 10000 photons at 100 keV. The total thickness of the arm is 8 cm with the bone thickness to be 3 cm and the muscle thickness 5 cm. Assuming HVL values of muscle and bone are 2.5 and 1 cm at 100 keV, respectively. How many photons are absorbed by the arm?

1) If an arm of a patient is to be imaged with a narrow beam of X-ray with 10000 photons at 100 keV. The total thickness of the arm is 8 cm with the bone thickness to be 3 cm and the muscle thickness 5 cm. Assuming HVL values of muscle and bone are 2.5 and 1 cm at 100 keV, respectively. How many photons are absorbed by the arm?