medical imaging asignment
TASK 1 Design of Computed Tomography (CT) Room and CT Room Shielding Calculation Designing CT room layout is very crucial parts which need to take into account the CT Room Shielding Regulations. The failure in designing CT room may cause excessive x-ray radiation exposed to operators even public safety. For the CT scanner, all walls in the room are secondary barriers, since the detector array provides the primary radiation barrier. The CT scanner presents a special situation requiring measured data from a typical scan (Refer page 770 for isocenter chart, Bushberg) to determine the amount of scattered radiation emanating from the gantry. The factors that have taken into account during room shielding calculation are listed as follows; a) Workload estimated per week b) Average mAs per patient (convention or helical) c) Fraction of head versus body scans Draw the CT room layout as in Figure 23-11, Page 770 (Bushberg Text Book). Label the thickness of the each wall and the type of materials have been used as calculated. Your group is given new task to design CT room layout in new hospital. Assume the workload for Computed Tomography Section is 25 patients per day undergoing an abdominal CT scan. Of the total, assume 50% of the exams are pre-post contrast study and 50% are without contrast (average 1.8 studies per patient). Each exam consists of 50 slices acquired 200 mAs per slice. Consider the wall behind the CT gantry to be located 3 meter from the gantry isocenter with an occupancy factor of 14. Compare and calculate in term of the wall thickness if lead and concrete have been used. TASK 1 Design of Computed Tomography (CT) Room and CT Room Shielding Calculation Designing CT room layout is very crucial parts which need to take into account the CT Room Shielding Regulations. The failure in designing CT room may cause excessive x-ray radiation exposed to operators even public safety. For the CT scanner, all walls in the room are secondary barriers, since the detector array provides the primary radiation barrier. The CT scanner presents a special situation requiring measured data from a typical scan (Refer page 770 for isocenter chart, Bushberg) to determine the amount of scattered radiation emanating from the gantry. The factors that have taken into account during room shielding calculation are listed as follows; a) Workload estimated per week b) Average mAs per patient (convention or helical) c) Fraction of head versus body scans Draw the CT room layout as in Figure 23-11, Page 770 (Bushberg Text Book). Label the thickness of the each wall and the type of materials have been used as calculated. Your group is given new task to design CT room layout in new hospital. Assume the workload for Computed Tomography Section is 25 patients per day undergoing an abdominal CT scan. Of the total, assume 50% of the exams are pre-post contrast study and 50% are without contrast (average 1.8 studies per patient). Each exam consists of 50 slices acquired 200 mAs per slice. Consider the wall behind the CT gantry to be located 3 meter from the gantry isocenter with an occupancy factor of 14. Compare and calculate in term of the wall thickness if lead and concrete have been used
