NCRP-147 Shielding Models 147 Shielding Models - Radiation ...

More documents

Recommendations

Info

Summary: Shielding Model No. 1 • Rigorous model based on the well-accepted NCRP-49 methods. • But you need a computer program (XRAYBARR, for example) to implement fully! • Is there a shielding method that allows paper and calculator solutions 34
NCRP-147 Shielding Model No. 2 • For each clinical workload distribution, of total workload dWW norm per patient, for both primary and secondary barriers, NCRP-147 provides: – K 1 , the kerma per patient at 1 m distance • Primary kerma per patient K 1 P is in Table 4.5 • Secondary kerma per patient K sec1 is in Table 4.7 – B, the transmission of the radiation generated by this workload distribution for primary or secondary barriers (cf App B & C) 35
Page 1 and 2: RSMI 2009 Session III Diagnostic X-
Page 3 and 4: The Three Models for Diagnostic X-r
Page 5 and 6: Primary, Scatter, and Leakage Must
Page 7 and 8: 1 st principle extensions to NCRP 4
Page 9 and 10: 1 st principle extensions to NCRP 4
Page 11 and 12: Unshielded Primary Beam Kerma KW (
Page 13 and 14: Primary Radiation: i The Old NCRP-4
Page 15 and 16: Primary Radiation: A Conservative,
Page 17 and 18: 1E+0 Primary Transmission Through P
Page 19 and 20: x pre for Radiographic Room Workloa
Page 21 and 22: Scatter Radiation patient 21
Page 23 and 24: Scaled Normalized Scatter Fraction
Page 25 and 26: Leakage Radiation Radiation origina
Page 27 and 28: Leakage radiation • These leakage
Page 29 and 30: New Leakage Model • For tube oper
Page 31 and 32: New Leakage Model • Write ratio o
Page 33: How far off is NCRP-49’s leakage
Page 37 and 38: NCRP-147 Shielding Model No. 2 Seco
Page 39 and 40: Shielding Model No. 2 • Get the u
Page 42 and 43: B=0.0047 x=1.2 mm Pb 42
Page 44 and 45: Shielding Model No. 3 for “Repres
Page 46 and 47: Representative Radiographic Room 46
Page 48 and 49: Representative Radiographic Room Ch
Page 50 and 51: “Representative R&F Room” Chest
Page 52 and 53: • Method: “Representative Room
Page 55: NT/Pd 2 curves have been fit •The
Page 58 and 59: Equivalency of Shielding Materials

NCRP-147 Shielding Models 147 Shielding Models - Radiation ...

Create successful ePaper yourself

Delete template?

Save as template?