CT HU Reference Table (Elements, Unit Density)

This HU data table was calculated for elements from the NIST database, using various CT x-ray spectra calculated via the TASMIP algorithm. The procedure for calculation can be found in the CT HU Calcuation Lab. For the calculation, all elements were forced to have a density of 1 g/cm³.

Z	Element	HU Range	Mean HU
1	Hydrogen	-162 → -73	-122
2	Helium	-500 → -460	-482
3	Lithium	-495 → -467	-482
4	Beryllium	-405 → -382	-394
5	Boron	-300 → -284	-292
6	Carbon, Graphite	-153 → -147	-150
7	Nitrogen	-65 → -60	-62
8	Oxygen	16 → 32	24
9	Fluorine	42 → 70	57
10	Neon	172 → 215	195
11	Sodium	209 → 263	238
12	Magnesium	331 → 401	369
13	Aluminum	380 → 463	425
14	Silicon	513 → 615	568
15	Phosphorus	551 → 665	613
16	Sulfur	682 → 816	755
17	Chlorine	697 → 841	775
18	Argon	673 → 824	755
19	Potassium	886 → 1065	983
20	Calcium	1022 → 1224	1131
21	Scandium	970 → 1174	1081
22	Titanium	1015 → 1231	1132
23	Vanadium	1053 → 1281	1177
24	Chromium	1179 → 1430	1315
25	Manganese	1228 → 1492	1371
26	Iron	1359 → 1647	1515
27	Cobalt	1397 → 1697	1559
28	Nickel	1570 → 1896	1747
29	Copper	1536 → 1865	1714
30	Zinc	1628 → 1977	1817
31	Gallium	1618 → 1972	1810
32	Germanium	1669 → 2035	1867
33	Arsenic	1738 → 2119	1944
34	Selenium	1747 → 2137	1958
35	Bromine	1864 → 2275	2086
36	Krypton	1879 → 2297	2105
37	Rubidium	1971 → 2409	2208
38	Strontium	2043 → 2495	2287
39	Yttrium	2150 → 2625	2407
40	Zirconium	2217 → 2706	2481
41	Niobium	2311 → 2820	2586
42	Molybdenum	2349 → 2868	2629
43	Technetium	2432 → 2970	2723
44	Ruthenium	2465 → 3010	2759
45	Rhodium	2551 → 3116	2856
46	Palladium	2575 → 3147	2884
47	Silver	2672 → 3266	2993
48	Cadmium	2660 → 3255	2981
49	Indium	2723 → 3332	3052
50	Tin	2737 → 3352	3069
51	Antimony	2777 → 3401	3114
52	Tellurium	2735 → 3357	3071
53	Iodine	2886 → 3535	3236
54	Xenon	2885 → 3537	3237
55	Cesium	2970 → 3640	3332
56	Barium	2972 → 3646	3336
57	Lanthanum	3052 → 3741	3424
58	Cerium	3145 → 3852	3527
59	Praseodymium	3252 → 3982	3646
60	Neodymium	3290 → 4032	3690
61	Promethium	3388 → 4146	3797
62	Samarium	3364 → 4124	3774
63	Europium	3436 → 4208	3852
64	Gadolinium	3409 → 4180	3825
65	Terbium	3488 → 4277	3913
66	Dysprosium	3516 → 4314	3946
67	Holmium	3562 → 4367	3996
68	Erbium	3622 → 4442	4064
69	Thulium	3699 → 4535	4150
70	Ytterbium	3700 → 4536	4151
71	Lutetium	3767 → 4618	4226
72	Hafnium	3790 → 4648	4253
73	Tantalum	3842 → 4712	4311
74	Tungsten	3884 → 4765	4359
75	Rhenium	3938 → 4831	4419
76	Osmium	3935 → 4825	4415
77	Iridium	3996 → 4900	4484
78	Platinum	4033 → 4945	4525
79	Gold	4104 → 5034	4605
80	Mercury	4122 → 5057	4626
81	Thallium	4125 → 5058	4628
82	Lead	4171 → 5118	4682
83	Bismuth	4231 → 5190	4748
84	Polonium	4327 → 5299	4851
85	Astatine	4414 → 5407	4950
86	Radon	4224 → 5184	4742
87	Francium	4299 → 5273	4824
88	Radium	4329 → 5309	4857
89	Actinium	4409 → 5406	4947
90	Thorium	4388 → 5382	4924
91	Protactinium	4516 → 5537	5066
92	Uranium	4450 → 5458	4994