TITLE 32: ENERGY
CHAPTER II: ILLINOIS EMERGENCY MANAGEMENT AGENCY
SUBCHAPTER b: RADIATION PROTECTION
PART 370 QUALITY STANDARDS AND CERTIFICATION REQUIREMENTS FOR FACILITIES PERFORMING MAMMOGRAPHY
SECTION 370.TABLE A MAMMOGRAPHY DOSE EVALUATION TABLE


 

Section 370.TABLE A   Mammography Dose Evaluation Table

 

This Table is used to determine the mean glandular dose in milligrays delivered by 25.8 mC/kg (or millirad) delivered by 1 R in air incident on a 4.2 centimeter thickness compressed breast of average density (50 percent adipose and 50 percent glandular tissue).  Values listed are for the first half-value layer (HVL) in millimeters of aluminum (mm Al), for x-ray tube target-filter combinations of molybdenum/molybdenum (Mo/Mo) and tungsten/ aluminum (W/Al). Linear extrapolation or interpolation shall be made for any HVL not listed.

 

Mean Glandular Dose in milligrays for 25.8 mC/kg (or millirad for 1 R) Entrance Exposure for a 4.2 Centimeter Compressed Breast of Average Density

 

HVL

Mo/Mo Target-Filter X-Ray Tube Voltage (kVp)

W-A1 Target-

(mm AL)

23

24

25

26

27

28

29

30

31

32

33

Filter Combination

0.23

116

 

 

 

 

 

 

 

 

 

 

 

0.24

121

124

 

 

 

 

 

 

 

 

 

 

0.25

126

129

131

 

 

 

 

 

 

 

 

 

0.26

130

133

135

138

 

 

 

 

 

 

 

 

0.27

135

138

140

142

143

 

 

 

 

 

 

 

0.28

140

142

144

146

147

149

 

 

 

 

 

 

0.29

144

146

148

150

151

153

154

 

 

 

 

 

0.30

149

151

153

155

156

157

158

159

 

 

 

170

0.31

154

156

157

159

160

161

162

163

164

 

 

175

0.32

158

160

162

163

164

166

167

168

168

170

171

180

0.33

163

165

166

168

169

170

171

173

173

174

175

185

0.34

168

170

171

172

173

174

175

176

177

178

179

190

0.35

 

174

175

176

177

178

179

180

181

182

183

194

0.36

 

 

179

181

182

183

184

185

185

186

187

199

0.37

 

 

 

185

186

187

188

189

190

191

191

204

0.38

 

 

 

 

190

191

192

193

194

195

195

208

0.39

 

 

 

 

 

196

197

198

198

199

200

213

0.40

 

 

 

 

 

 

201

202

203

204

204

217

0.41

 

 

 

 

 

 

 

206

207

208

208

221

0.42

 

 

 

 

 

 

 

 

211

212

212

225

0.43

 

 

 

 

 

 

 

 

 

215

216

230

0.44

 

 

 

 

 

 

 

 

 

 

220

234

0.45

 

 

 

 

 

 

 

 

 

 

 

238

 

AGENCY NOTE:  Adapted from:  Mammography Quality Control Manual:  Medical Physicist's Section, Revised Edition, 1999.

 

(Source:  Amended at 33 Ill. Reg. 2224, effective January 23, 2009)