NCRP Report #147 - Radiation Shielding for Medical Instalations

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Workload, W• Types of Rooms in 1996 Workload Survey:– Radiographic Rooms– Radiographic and Fluoroscopic (R&F) Rooms– Chest Room– Mammography Room– Cardiac Angiography Room– Peripheral Angiography Room• (But this missed the Cu-filtered high-heat h h loadingunits seen today in Interventional Labs and somefluoroscopic units)30
Workload Survey• Found total W to be far different from the 1000mA·min/wk blindly assumed– Radiographic Rooms: 277 mA·min/wk– Chest Rooms: 45 mA·min/wk– Cardiac Angio Rooms: 3050 mA·min/wk• Found kVp distribution of workloads to be atpotentials significantly below the single kVpoperating value usually assumed31
Page 1 and 2: RSMI 2009Session II - General Conce
Page 3 and 4: Preliminaries• “Thank You” to
Page 5 and 6: Madeline Jean Simpkin, born July15,
Page 7 and 8: I’m No Philosopher• I’m here
Page 9 and 10: Background…And this place is back
Page 11 and 12: NCRP Report #147• NCRP Report #14
Page 13 and 14: NCRP-491976Design Goal, PControlled
Page 15 and 16: P=0.1 1 mGy/y for Uncontrolled area
Page 17 and 18: NCRP Statement 10 (2004)• In Stat
Page 19 and 20: NCRP-147 Recommended TOffices, labs
Page 21 and 22: X-ray Beam Transmission•For a giv
Page 23 and 24: Archer Equation for Transmission Cu
Page 25 and 26: Archer Equation for Transmission Cu
Page 27 and 28: Workload, W• W is a measure of th
Page 29: Workload, W• To determine W used
Page 33 and 34: Workload Distribution, W(kVp)• Ge
Page 35 and 36: General Radiographic RoomWorkload D
Page 37 and 38: NCRP-147 Models for DiagnosticX-Ray
Page 39 and 40: The Three Models In NCRP 147• cf
Page 41 and 42: Result: CT Scanner in a Shielding C
Page 43 and 44: Surveys of X-ray Shielding• After
Page 45 and 46: NCRP Report #147 Conclusions I• D
Page 47: NCRP Report #147 Conclusions III•

NCRP Report #147 - Radiation Shielding for Medical Instalations

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