QUESTION 10 Unattended Parking Lot Employee Bathroom Isocenter Corridor A Outdoor Area with seating Treatment Planning Console Area Waiting Area We need to design shielding for a linear accelerator that has only 6MV photons and will be used for Stereotactic radiosurgery (SRS), stereotactic body radiotherapy (SBRT), total body irradiation (TBI), intensity modulated/volumetric modulated radiotherapy (IMRT/VMAT) and conventional (3D) treatments. What is the total primary workload in Gy/week for the distribution below: Treatment Type # patient treatments/day Average dose/fraction (cGy/fx) Average MU/fraction (MU/fx) SRS 1 2000 10,000 SBRT 2 1000 4,000 TBI 2 200 (at 3m) 1,800 MRT/VMAT 20 200 700 3D 10 300 300 Average QA 1 400 400QUESTION 11 For the previous problem, what is the primary workload in Gy/week for the other primary barriers? QUESTION 12 What is the workload in Gy/week for the scatter barrier calculation? QUESTION 13 What is the total workload in Gy/week for the leakage barrier calculation?QUESTION 14 5 points Save Answe Unattended Parking Lot Employee Bathroom Isocenter- with seating Outdoor Area Corridor A Treatment Planning Console Area Waiting Area For the Linac vault from question 13, the 6MV accelerator has a maximum absorbed dose output rate at 1m from the source of 36Gy/minute and the nominal rate used is 18Gy/min. The isocenter is 1m from the source of radiation. The distance from the machine isocenter to 0.3m beyond the barrier at point is 6.3m. Clearly state all your assumptions as you find the barrier thickness in concrete at point A, an outdoor seating area for patients, families and employees. Assume the workload as calculated for the primary wall where the TBI treaments are done.QUESTION 15 P Pd2 400 Scatter transmission equation: B d2 12 ps F Leakage transmission equation: B = c W T sca sec L 10 - W T Find the secondary concrete barrier thickness necessary in the console area if the distance from the isocenter to the point of calculation is 7 m ( = dsec, dj for simplification). Machine is the same as seen in prior Linac questions