S.C. Code Regs. § ch. 61, 61-64, pt. V, app 61-64.V.C

Current through Register Vol. 48, 12, December 27, 2024

Appendix 61-64.V.C - Mammography Dose Evaluation Tables

These tables are used to determine the mean glandular dose in milligrays delivered by 25.9 mC/kg (or millirad) delivered by one Roentgen (1 R) in air incident on a 4.2 centimeter thickness compressed breast of average density (fifty percent (50%) adipose and fifty percent (50%) glandular tissue). Linear extrapolation or interpolation shall be made for any HVL not listed. To convert from entrance exposure in air in roentgens to mean glandular breast dose in millirads, multiply the entrance exposure by the factor shown in the table for the appropriate kVp and beam quality (HVL) combination.

GLANDULAR DOSE (IN mrad) FOR 1 ROENTGEN ENTRANCE EXPOSURE TO A 4.2-CM BREAST THICKNESS---50% ADIPOSE 50% GLANDULAR BREAST TISSUE---USING A Mo/Mo TARGET-FILTER COMBINATION*

X-ray Tube Voltage (kVp)												W/Al
Target-Filter
HVL	23	24	25	26	27	28	29	30	31	32	33	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

GLANDULAR DOSE (IN mrad) FOR 1 ROENTGEN ENTRANCE EXPOSURE TO A 4.2-CM BREAST THICKNESS ---50% ADIPOSE 50% GLANDULAR BREAST TISSUE ---USING A Mo/Rh TARGET-FILTER COMBINATION*

X-ray Tube Voltage (kVp)
HVL	25	26	27	28	29	30	31	32	33	34	35
0.28	149	151	154
0.29	154	156	158	159
0.30	158	160	162	162	163
0.31	163	164	166	166	166	167	167
0.32	167	169	171	171	171	171	172	172
0.33	171	173	175	176	176	176	176	177
0.34	176	178	179	179	180	180	180	181	181
0.35	180	181	183	183	184	185	185	186	187
0.36	185	186	187	187	188	188	189	190	191	191
0.37	189	190	191	191	192	193	193	194	195	195
0.38	193	194	196	196	197	197	197	198	199	199	200
0.39	198	199	200	200	201	201	202	202	203	203	204
0.40	202	203	204	204	205	205	206	207	208	208	208
0.41	206	207	208	208	209	209	210	211	212	212	212
0.42	211	211	212	212	213	213	214	215	216	216	217
0.43	215	216	217	217	218	218	219	219	220	220	221
0.44	220	220	221	221	222	222	223	223	224	224	225
0.45	224	224	225	225	226	226	227	227	228	228	229
0.46	228	229	229	230	231	231	232	233	233	234
0.47	233	233	234	235	235	236	237	237	238
0.48	238	238	239	240	240	241	241	242	242
0.49	242	243	243	244	244	245	245	246
0.50	247	247	248	248	249	250	251
0.51	251	252	253	254	254	255
0.52	257	257	258	258	259
0.53	261	261	262	263	264
0.54	265	266	267	268
0.55	269	270	271	272
0.56	275	276	276
0.57	279	280	281
0.58	284	285
0.59	288	289
0.60	293

GLANDULAR DOSE (IN mrad) FOR 1 ROENTGEN ENTRANCE EXPOSURE TO A 4.2-CM BREAST THICKNESS ---50% ADIPOSE 50% GLANDULAR BREAST TISSUE ---USING A Rh/Rh TARGET-FILTER COMBINATION*

X-ray Tube Voltage (kVp)
HVL	25	26	27	28	29	30	31	32	33	34	35
0.28	150	155	159
0.29	155	160	164	168
0.30	160	164	168	172	176
0.31	165	168	172	174	180	182
0.32	169	173	177	181	184	186	188
0.33	174	178	181	185	188	190	192
0.34	179	183	186	190	193	195	196	199
0.35	184	187	190	194	197	199	201	203
0.36	189	192	195	198	201	204	205	207	209
0.37	193	196	199	202	205	207	209	211	213
0.38	198	201	204	207	209	211	213	215	217	219	221
0.39	203	206	208	211	214	216	217	219	221	223	224
0.40	208	211	213	216	218	220	221	223	224	226	228
0.41	213	215	217	220	222	224	225	227	228	230	232
0.42	218	220	222	224	226	228	229	231	232	234	236
0.43	222	224	226	228	230	232	233	235	236	238	240
0.44	227	229	231	233	235	237	238	239	240	242	243
0.45	232	234	235	237	239	241	242	243	244	246	247
0.46	239	241	243	245	246	247	248	250	251
0.47	247	249	250	251	252	254	255
0.48	251	253	254	255	256	258	259
0.49	257	258	259	260	261	262
0.50	261	262	263	264	265	266
0.51	266	267	268	269	270
0.52	270	271	272	273	274
0.53	275	276	276	277	278
0.54	279	280	280	281
0.55	283	284	284	285
0.56	288	288	289
0.57	292	293
0.58	296	297
0.59	300
0.60	304

S.C. Code Regs. ch. 61, 61-64, pt. V, app 61-64.V.C

Replaced and amended by State Register Volume 40, Issue No. 06, eff. 6/24/2016; State Register Volume 47, Issue No. 05, eff. 5/26/2023.