Illinois Administrative Code
Title 32 - ENERGY
Part 370 - QUALITY STANDARDS AND CERTIFICATION REQUIREMENTS FOR FACILITIES PERFORMING MAMMOGRAPHY
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(mm AL) |
Mo/Mo Target-Filter X-Ray Tube Voltage (kVp) |
W-A1 Target-Filter Combination |
||||||||||
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
32 |
33 |
||
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.