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Illinois Administrative Code (Last Updated: March 27, 2024) |
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TITLE32. ENERGY |
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PART370. QUALITY STANDARDS AND CERTIFICATION REQUIREMENTS FOR FACILITIES PERFORMING MAMMOGRAPHY |
§370.TABLE A. Mammography Dose Evaluation Table
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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)