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Effective dose (radiation)

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89: 176: 4081: 191:, a physical dose quantity that is dependent on the level of incident radiation and the absorption properties of the irradiated object. Absorbed dose is a physical quantity, and is not a satisfactory indicator of biological effect, so to allow consideration of the stochastic radiological risk, the dose quantities equivalent dose and effective dose were devised by the 114:
are known. A radiation field irradiating only a portion of the body will carry lower risk than if the same field irradiated the whole body. To take this into account, the effective doses to the component parts of the body which have been irradiated are calculated and summed. This becomes the effective dose for the whole body, dose quantity
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The concept of effective dose was developed by Wolfgang Jacobi and published in 1975, and was so convincing that the ICRP incorporated it into their 1977 general recommendations (publication 26) as "effective dose equivalent". The name "effective dose" replaced the name "effective dose equivalent" in
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does not consider the tissue irradiated, but only the radiation type. Various body tissues react to ionising radiation in different ways, so the ICRP has assigned sensitivity factors to specified tissues and organs so that the effect of partial irradiation can be calculated if the irradiated regions
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This included a proposal to discontinue use of equivalent dose as a separate protection quantity. This would avoid confusion between equivalent dose, effective dose and dose equivalent, and to use absorbed dose in Gy as a more appropriate quantity for limiting deterministic effects to the eye lens,
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According to the ICRP, the main uses of effective dose are the prospective dose assessment for planning and optimisation in radiological protection, and demonstration of compliance with dose limits for regulatory purposes. The effective dose is thus a central dose quantity for regulatory purposes.
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Some tissues like bone marrow are particularly sensitive to radiation, so they are given a weighting factor that is disproportionately large relative to the fraction of body mass they represent. Other tissues like the hard bone surface are particularly insensitive to radiation and are assigned a
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The concept of effective dose was introduced in 1975 by Wolfgang Jacobi (1928–2015) in his publication "The concept of an effective dose: a proposal for the combination of organ doses". It was quickly included in 1977 as “effective dose equivalent” into Publication 26 by the ICRP. In 1991, ICRP
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The sum of effective doses to all organs and tissues of the body represents the effective dose for the whole body. If only part of the body is irradiated, then only those regions are used to calculate the effective dose. The tissue weighting factors summate to 1.0, so that if an entire body is
871: 53:. It takes into account the type of radiation and the nature of each organ or tissue being irradiated, and enables summation of organ doses due to varying levels and types of radiation, both internal and external, to produce an overall calculated effective dose. 100:
The ICRP also says that effective dose has made a significant contribution to radiological protection as it has enabled doses to be summed from whole and partial body exposure from external radiation of various types and from intakes of radionuclides.
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The ICRP tissue weighting factors are chosen to represent the fraction of health risk, or biological effect, which is attributable to the specific tissue named. These weighting factors have been revised twice, as shown in the chart above.
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An effective dose will carry the same effective risk to the whole body regardless of where it was applied, and it will carry the same effective risk as the same amount of equivalent dose applied uniformly to the whole body.
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defines its usage of the term effective dose; "Any reference to an effective dose means the sum of the effective dose to the whole body from external radiation and the committed effective dose from internal radiation."
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At the ICRP 3rd International Symposium on the System of Radiological Protection in October 2015, ICRP Task Group 79 reported on the "Use of Effective Dose as a Risk-related Radiological Protection Quantity".
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publication 60 shortened the name to "effective dose." This quantity is sometimes incorrectly referred to as the "dose equivalent" because of the earlier name, and that misnomer in turn causes confusion with
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It was also proposed that effective dose could be used as a rough indicator of possible risk from medical examinations. These proposals will need to go through the following stages:
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The ICRP tissue weighting factors are given in the accompanying table, and the equations used to calculate from either absorbed dose or equivalent dose are also given.
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In the US, cumulative equivalent dose due to external whole-body exposure is normally reported to nuclear energy workers in regular dosimetry reports.
3181: 866:{\displaystyle E=\sum _{T}W_{T}\sum _{R}W_{R}\cdot {\frac {\displaystyle \int _{T}D_{R}(x,y,z)\rho (x,y,z)dV}{\displaystyle \int _{T}\rho (x,y,z)dV}}} 4017: 244:
radiated with uniformly penetrating external radiation, the effective dose for the entire body is equal to the equivalent dose for the entire body.
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is the integration time in years following the intake. The commitment period is taken to be 50 years for adults, and to age 70 years for children.
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Zhang, Zhuoli; Qi, Li; Meinel, Felix G.; Zhou, Chang Sheng; Zhao, Yan E.; Schoepf, U. Joseph; Zhang, Long Jiang; Lu, Guang Ming (2014).
1752: 3945: 3824: 3564: 3473: 3017: 2563: 2288: 2251: 4130: 3403: 2229:"Use of Effective Dose", John Harrison. 3rd International Symposium on the System of Radiological Protection, October 2015, Seoul. 3388: 3383: 3266: 3083: 1525: 225:
received in irradiated body tissues, and the result is further corrected for the tissues or organs being irradiated using factor
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still uses the ICRP's 1977 tissue weighting factors in their regulations, despite the ICRP's later revised recommendations.
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is the sum of the products of the committed organ or tissue equivalent doses and the appropriate tissue weighting factors
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Ionizing radiation is generally harmful and potentially lethal to living things but can have health benefits in
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The calculation of effective dose is required for partial or non-uniform irradiation of the human body because
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Ionizing radiation deposits energy in the matter being irradiated. The quantity used to express this is the
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1991. Since 1977 it has been the central quantity for dose limitation in the ICRP international system of
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which is the internal dose resulting from inhaling, ingesting, or injecting radioactive materials.
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Jacobi W (1975). "The concept of effective dose - A proposal for the combination of organ doses".
1963: 1891: 1105: 1049: 120:. It is a "protection" dose quantity which can be calculated, but cannot be measured in practice. 4105: 3995: 3844: 3839: 3740: 3623: 3478: 3229: 3114: 2935: 2915: 2895: 2779: 2687: 2348: 2338: 2333: 2203: 1512: 50: 3834: 3799: 3794: 3735: 3483: 3332: 3007: 2885: 2822: 2787: 2391: 2195: 2151: 2133: 2084: 2066: 2020: 1953: 1921: 1822:
Journal of Radiological protection Vol.35 No.3 2015. "Obituary - Wolfgang Jacobi 1928 - 2015."
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of acute tissue damage that is certain to happen, that is measured by the quantity
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of years or decades after exposure. High doses can cause visually dramatic
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in all specified tissues and organs of the human body and represents the
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to refer to a similar quantity to the ICRP effective dose. The NRC's
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External dose quantities used in radiation protection and dosimetry
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Brisbane, Wayne; Bailey, Michael R.; Sorensen, Mathew D. (2016).
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To obtain an effective dose, the calculated absorbed organ dose
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Graphic showing relationships of protection dose quantities in
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International Commission on Radiation Units and Measurements
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to give a weighted average of the equivalent dose quantity
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Probability of ill health effects from ionizing radiation
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has retained in the US regulation system the older term
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is the radiation weighting factor defined by regulation
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is first corrected for the radiation type using factor
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is the tissue weighting factor defined by regulation
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International Commission on Radiological Protection
2011:Unless otherwise specified in boxes, reference is: 1179: 1157: 1135: 1086: 1025: 983: 954: 920: 891: 865: 673: 1704:Reconsideration by Committees and Main Commission 2047:"An overview of kidney stone imaging techniques" 1831:ICRP publication 103 executive summary para 101 1305:CT of the chest, lung cancer screening protocol 3175: 2695: 2289: 1840:ICRP publication 103 executive summary para j 1223: 1033:is the mass-averaged absorbed dose in tissue 8: 1858:ICRP publication 103, para 22 & glossary 899:is the effective dose to the entire organism 41:health risk to the whole body, which is the 2455:Airborne radioactive particulate monitoring 2168:The UK Ionising Radiations Regulations 1999 1374:CT of abdomen and pelvis, low dose protocol 3905: 3787: 3777: 3373: 3217: 3208: 3182: 3168: 3160: 2722: 2702: 2688: 2680: 2296: 2282: 2274: 1818: 1816: 1230: 1216: 928:is the equivalent dose absorbed by tissue 2145: 2127: 2078: 1915: 1385:CT of abdomen and pelvis, with + without 1172: 1150: 1107: 1094:is the absorbed dose from radiation type 1057: 1051: 1011: 1001: 998: 975: 969: 946: 940: 912: 906: 884: 824: 761: 751: 744: 735: 725: 715: 705: 693: 659: 649: 639: 629: 619: 609: 596: 583: 573: 561: 234:, to produce the effective dose quantity 4018:Orthogonal polarization spectral imaging 1990:. US Nuclear Regulatory Commission. 2009 1206: 1143:is the density as a function of location 268:Weighting factors for different tissues 266: 264:disproportionally low weighting factor. 174: 87: 2007: 2005: 1764: 3043:Wireless electronic devices and health 2016:"Radiation Dose in X-Ray and CT Exams" 1880:page 40, table A1, retrieved 2011-7-20 1792:ICRP publication 103, para 104 and 105 1211:Effective dose by medical imaging type 553:Calculating from the equivalent dose: 56:The SI unit for effective dose is the 49:and genetic effects, of low levels of 2620:Radiation Protection Convention, 1960 2025:Radiological Society of North America 1026:{\displaystyle {\overline {D}}_{T,R}} 132:Effective dose can be calculated for 33:It is the tissue-weighted sum of the 7: 3069:List of civilian radiation accidents 3038:Wireless device radiation and health 3033:Biological dose units and quantities 2983:Electromagnetic radiation and health 1625:Ionising Radiations Regulations 1999 685:Calculating from the absorbed dose: 1753:Committed effective dose equivalent 3825:Sestamibi parathyroid scintigraphy 3018:Radioactivity in the life sciences 2252:US Environmental Protection Agency 2220:ICRP publication 103 paragraph 101 1187:is the tissue or organ of interest 14: 1698:Discussion within ICRP Committees 4080: 4079: 2057:(11). Springer Nature: 654–662. 1867:ICRP publication 103 - Glossary. 1810:ICRP report 103 para 104 and 105 1701:Revision of report by Task Group 1602:. Controlled doses are used for 1598:, and/or rapid fatality through 1586:. Its most common impact is the 1582:for the treatment of cancer and 3582:Cholangiopancreatography (MRCP) 1728:Total effective dose equivalent 1646:total effective dose equivalent 248:Use of tissue weighting factor 3830:Radioactive iodine uptake test 2387:Computed tomography dose index 1783:ICRP publication 103, glossary 1774:ICRP publication, 103 para 103 1130: 1112: 1081: 1063: 851: 833: 809: 791: 785: 767: 1: 3810:Radionuclide ventriculography 3284:Lower gastrointestinal series 3276:Upper gastrointestinal series 1849:ICRP publication 103 para 101 1638:Nuclear Regulatory Commission 1439:Lower gastrointestinal series 1426:Upper gastrointestinal series 1197:Nuclear Regulatory Commission 171:Calculation of effective dose 64:health effects, which is the 4001:Optical coherence tomography 3923:Myocardial perfusion imaging 3511:Dental panoramic radiography 2129:10.1371/journal.pone.0099112 1917:10.1016/0146-6453(91)90066-P 1682:Future use of Effective Dose 1632:US effective dose equivalent 1136:{\displaystyle \rho (x,y,z)} 1087:{\displaystyle D_{R}(x,y,z)} 1006: 654: 2906:Cosmic background radiation 139:The dose quantity used is: 4152: 3805:Ventilation/perfusion scan 3280:Small-bowel follow-through 3135: 2993:Lasers and aviation safety 2651: 1571: 22:is a dose quantity in the 4075: 4046:Dynamic angiothermography 3790: 3714:Abdominal ultrasonography 3220: 3133: 3023:Radioactive contamination 2876:Electromagnetic radiation 2866: 2649: 2344:Radioactive contamination 1748:Committed dose equivalent 1642:effective dose equivalent 1552: 1538: 1524: 1511: 1479: 1450: 1357: 1328: 1288: 1258: 1209: 1100:as a function of location 276:Tissue weighting factors 275: 272: 143:Committed effective dose, 4131:Radiation health effects 4036:Non-contact thermography 3815:Radionuclide angiography 3667:Doppler echocardiography 3136:See also the categories 3074:1996 Costa Rica accident 2735:Acoustic radiation force 2652:See also the categories 2641:Radiation-induced cancer 2636:Acute radiation syndrome 2180:Radiat. Environ. Biophys 1948:. ICRP publication 103. 1691:skin, hands & feet. 1600:acute radiation syndrome 1362:CT of abdomen and pelvis 1346:Coronary CT calcium scan 1248:Effective dose in adults 3820:Radioisotope renography 3048:Radiation heat-transfer 2901:Gravitational radiation 2063:10.1038/nrurol.2016.154 1898:. ICRP publication 60. 1662:shallow dose equivalent 1614:Regulatory nomenclature 1333:Coronary CT angiography 1203:By medical imaging type 128:Usage for internal dose 105:Usage for external dose 78:radiological protection 28:radiological protection 3855:Gastric emptying study 3089:1990 Zaragoza accident 3084:1984 Moroccan accident 3053:Linear energy transfer 2727:Non-ionizing radiation 2492:Semiconductor detector 2448:measurement techniques 2051:Nature Reviews Urology 1181: 1159: 1137: 1088: 1027: 985: 956: 922: 893: 867: 675: 184: 93: 3516:X-ray motion analysis 3399:X-ray microtomography 3318:Hysterosalpingography 3225:Pneumoencephalography 3079:1987 Goiânia accident 2881:Synchrotron radiation 2871:Earth's energy budget 2853:Radioactive materials 2848:Particle accelerators 2511:Protection techniques 2475:Scintillation counter 1413:Intravenous pyelogram 1182: 1160: 1138: 1089: 1028: 986: 984:{\displaystyle W_{R}} 957: 955:{\displaystyle W_{T}} 923: 921:{\displaystyle H_{T}} 894: 868: 676: 178: 91: 4136:Radiation protection 4041:Contact thermography 3751:Emergency ultrasound 3689:Transcranial Doppler 3440:Abdominal and pelvis 3150:Radiation protection 3003:Radiation protection 2891:Black-body radiation 2798:Background radiation 2713:(physics and health) 2670:Radiation protection 2487:Radiation monitoring 2480:Proportional counter 2365:quantities and units 2319:Background radiation 2305:Radiation protection 1890:Vennart, J. (1991). 1801:ICRP publication 103 1733:Deep-dose equivalent 1656:deep-dose equivalent 1253:background radiation 1171: 1149: 1106: 1050: 997: 968: 939: 905: 883: 692: 560: 4121:Physical quantities 4008:Confocal microscopy 3886:Indium-111 WBC scan 3709:Echoencephalography 3445:Virtual colonoscopy 3120:Radiation hardening 3062:Radiation incidents 2998:Medical radiography 2957:Radiation syndrome 2911:Cherenkov radiation 2502:Whole-body counting 2412:Mean glandular dose 2349:Radioactive sources 2120:2014PLoSO...999112Q 1966:on 16 November 2012 1908:1991JRP....11..199V 1707:Public Consultation 1588:induction of cancer 1507:5 weeks - 6 months 1251:Equivalent time of 269: 3996:Optical tomography 3845:Dacryoscintigraphy 3840:Immunoscintigraphy 3479:Whole body imaging 3230:Dental radiography 3115:Radioactive source 2936:Radiation exposure 2916:Askaryan radiation 2896:Particle radiation 2780:Ionizing radiation 2339:Internal dosimetry 2334:Ionizing radiation 2192:10.1007/BF01328971 2053:(Review article). 1946:Annals of the ICRP 1896:Annals of the ICRP 1486:X-ray of extremity 1195:The United States 1177: 1155: 1133: 1084: 1039:by radiation type 1023: 981: 952: 918: 889: 863: 860: 818: 730: 710: 671: 634: 614: 578: 267: 185: 94: 51:ionizing radiation 4093: 4092: 4055:Target conditions 3978: 3977: 3974: 3973: 3894: 3893: 3835:Bone scintigraphy 3800:Scintimammography 3795:Cholescintigraphy 3640:contrast-enhanced 3534: 3533: 3494: 3493: 3484:Full-body CT scan 3384:General operation 3363: 3362: 3333:Angiocardiography 3157: 3156: 3138:Radiation effects 3008:Radiation therapy 2944: 2943: 2886:Thermal radiation 2823:Neutron radiation 2788:Radioactive decay 2677: 2676: 2658:Radiation effects 2629:Radiation effects 2392:Counts per minute 2021:RadiologyInfo.org 1959:978-0-7020-3048-2 1927:978-0-08-041144-6 1738:Dose area product 1580:radiation therapy 1565: 1564: 1180:{\displaystyle T} 1158:{\displaystyle V} 1009: 892:{\displaystyle E} 861: 721: 701: 657: 625: 605: 569: 551: 550: 524:Remainder of body 26:(ICRP) system of 4143: 4083: 4082: 3906: 3788: 3778: 3662:Echocardiography 3521:Hounsfield scale 3374: 3293:Cholecystography 3218: 3209: 3184: 3177: 3170: 3161: 3098:Related articles 3013:Radiation damage 2838:Nuclear reactors 2723: 2704: 2697: 2690: 2681: 2533:Radon mitigation 2528:Potassium iodide 2446:Instruments and 2298: 2291: 2284: 2275: 2270: 2268: 2267: 2261: 2255:. 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imaging 1596:radiation burns 1576: 1570: 1469:CT of the spine 1400:CT Colonography 1293:CT of the chest 1275:With + without 1237: 1236: 1205: 1169: 1168: 1147: 1146: 1104: 1103: 1095: 1053: 1048: 1047: 1040: 1034: 1000: 995: 994: 971: 966: 965: 942: 937: 936: 929: 908: 903: 902: 881: 880: 820: 757: 747: 731: 711: 690: 689: 648: 635: 615: 592: 579: 558: 557: 493:Salivary glands 292: 287: 282: 258: 255: 249: 235: 232: 226: 223: 217: 214: 208: 205: 199: 173: 162: 159: 153: 145: 130: 115: 111:equivalent dose 107: 86: 17: 12: 11: 5: 4149: 4147: 4139: 4138: 4133: 4128: 4123: 4118: 4113: 4108: 4098: 4097: 4091: 4090: 4088: 4087: 4076: 4073: 4072: 4070: 4069: 4064: 4058: 4056: 4052: 4051: 4049: 4048: 4043: 4038: 4032: 4030: 4024: 4023: 4021: 4020: 4015: 4013:Endomicroscopy 4010: 4005: 4004: 4003: 3992: 3990: 3980: 3979: 3976: 3975: 3972: 3971: 3969: 3968: 3963: 3958: 3953: 3948: 3942: 3940: 3929: 3928: 3926: 3925: 3919: 3917: 3903: 3896: 3895: 3892: 3891: 3889: 3888: 3883: 3878: 3873: 3867: 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3134: 3131: 3130: 3128: 3127: 3122: 3117: 3112: 3107: 3101: 3099: 3095: 3094: 3092: 3091: 3086: 3081: 3076: 3071: 3065: 3063: 3059: 3058: 3056: 3055: 3050: 3045: 3040: 3035: 3030: 3025: 3020: 3015: 3010: 3005: 3000: 2995: 2990: 2985: 2980: 2975: 2973:Health physics 2970: 2969: 2968: 2963: 2954: 2952: 2946: 2945: 2942: 2941: 2939: 2938: 2933: 2931:Dark radiation 2928: 2923: 2921:Bremsstrahlung 2918: 2913: 2908: 2903: 2898: 2893: 2888: 2883: 2878: 2873: 2867: 2864: 2863: 2861: 2860: 2855: 2850: 2845: 2840: 2835: 2833:Nuclear fusion 2830: 2825: 2820: 2815: 2810: 2805: 2803:Alpha particle 2800: 2795: 2790: 2784: 2782: 2776: 2775: 2773: 2772: 2767: 2762: 2757: 2752: 2747: 2742: 2737: 2731: 2729: 2720: 2716: 2715: 2709: 2707: 2706: 2699: 2692: 2684: 2675: 2674: 2650: 2647: 2646: 2644: 2643: 2638: 2632: 2630: 2626: 2625: 2623: 2622: 2617: 2612: 2607: 2601: 2599: 2595: 2594: 2592: 2591: 2586: 2581: 2576: 2571: 2566: 2561: 2556: 2550: 2548: 2544: 2543: 2541: 2540: 2535: 2530: 2525: 2520: 2518:Lead shielding 2514: 2512: 2508: 2507: 2505: 2504: 2499: 2494: 2489: 2483: 2482: 2477: 2472: 2467: 2465:Geiger counter 2462: 2457: 2451: 2449: 2443: 2442: 2440: 2439: 2434: 2429: 2424: 2419: 2414: 2409: 2404: 2399: 2397:Effective dose 2394: 2389: 2384: 2382:Committed dose 2379: 2374: 2368: 2366: 2360: 2359: 2357: 2356: 2351: 2346: 2341: 2336: 2331: 2329:Health physics 2326: 2321: 2315: 2313: 2309: 2308: 2303: 2301: 2300: 2293: 2286: 2278: 2238: 2237:External links 2235: 2232: 2231: 2222: 2213: 2186:(2): 101–109. 2170: 2161: 2094: 2037: 2001: 1987:10 CFR 20.1003 1977: 1958: 1933: 1926: 1882: 1869: 1860: 1851: 1842: 1833: 1824: 1812: 1803: 1794: 1785: 1776: 1763: 1762: 1760: 1757: 1756: 1755: 1750: 1745: 1740: 1735: 1730: 1725: 1720: 1713: 1710: 1709: 1708: 1705: 1702: 1699: 1683: 1680: 1670: 1667: 1666: 1665: 1659: 1633: 1630: 1620: 1619:UK regulations 1617: 1615: 1612: 1584:thyrotoxicosis 1572:Main article: 1569: 1568:Health effects 1566: 1563: 1562: 1559: 1556: 1550: 1549: 1546: 1543: 1536: 1535: 1532: 1529: 1528:(bone density) 1522: 1521: 1518: 1515: 1509: 1508: 1505: 1502: 1500:CT angiography 1495: 1494: 1491: 1488: 1483: 1477: 1476: 1473: 1470: 1466: 1465: 1462: 1459: 1454: 1448: 1447: 1444: 1441: 1435: 1434: 1431: 1428: 1422: 1421: 1418: 1415: 1409: 1408: 1405: 1402: 1396: 1395: 1392: 1389: 1382: 1381: 1378: 1375: 1371: 1370: 1367: 1364: 1359: 1355: 1354: 1351: 1348: 1342: 1341: 1338: 1335: 1330: 1326: 1325: 1322: 1319: 1313: 1312: 1309: 1306: 1302: 1301: 1298: 1295: 1290: 1286: 1285: 1282: 1279: 1272: 1271: 1268: 1265: 1262: 1260:CT of the head 1256: 1255: 1249: 1246: 1243: 1239: 1238: 1235: 1234: 1227: 1220: 1212: 1210: 1204: 1201: 1189: 1188: 1176: 1166: 1154: 1144: 1132: 1129: 1126: 1123: 1120: 1117: 1114: 1111: 1101: 1083: 1080: 1077: 1074: 1071: 1068: 1065: 1060: 1056: 1045: 1020: 1017: 1014: 1008: 1005: 992: 978: 974: 963: 949: 945: 934: 915: 911: 900: 888: 874: 873: 859: 856: 853: 850: 847: 844: 841: 838: 835: 832: 827: 823: 817: 814: 811: 808: 805: 802: 799: 796: 793: 790: 787: 784: 781: 778: 775: 772: 769: 764: 760: 754: 750: 743: 738: 734: 728: 724: 718: 714: 708: 704: 700: 697: 683: 682: 668: 665: 662: 656: 653: 647: 642: 638: 632: 628: 622: 618: 612: 608: 604: 599: 595: 591: 586: 582: 576: 572: 568: 565: 549: 548: 545: 542: 539: 535: 534: 531: 528: 525: 521: 520: 517: 514: 511: 505: 504: 501: 498: 495: 489: 488: 485: 482: 479: 472: 471: 468: 465: 462: 456: 455: 452: 449: 446: 440: 439: 436: 433: 430: 424: 423: 420: 417: 414: 408: 407: 404: 401: 398: 392: 391: 388: 385: 382: 376: 375: 372: 369: 366: 360: 359: 356: 353: 350: 344: 343: 340: 337: 334: 328: 327: 324: 321: 318: 311: 310: 307: 304: 301: 295: 294: 289: 284: 278: 277: 274: 257: 253: 246: 230: 221: 212: 203: 172: 169: 157: 134:committed dose 129: 126: 106: 103: 85: 82: 20:Effective dose 15: 13: 10: 9: 6: 4: 3: 2: 4148: 4137: 4134: 4132: 4129: 4127: 4124: 4122: 4119: 4117: 4114: 4112: 4109: 4107: 4104: 4103: 4101: 4086: 4078: 4077: 4074: 4068: 4065: 4063: 4060: 4059: 4057: 4053: 4047: 4044: 4042: 4039: 4037: 4034: 4033: 4031: 4029: 4025: 4019: 4016: 4014: 4011: 4009: 4006: 4002: 3999: 3998: 3997: 3994: 3993: 3991: 3989: 3985: 3981: 3967: 3964: 3962: 3959: 3957: 3954: 3952: 3949: 3947: 3944: 3943: 3941: 3938: 3934: 3930: 3924: 3921: 3920: 3918: 3915: 3911: 3907: 3904: 3902: 3897: 3887: 3884: 3882: 3881:Ga-68-DOTATOC 3879: 3877: 3874: 3872: 3869: 3868: 3866: 3862: 3856: 3853: 3851: 3848: 3846: 3843: 3841: 3838: 3836: 3833: 3831: 3828: 3826: 3823: 3821: 3818: 3816: 3813: 3811: 3808: 3806: 3803: 3801: 3798: 3796: 3793: 3792: 3789: 3786: 3784: 3779: 3776: 3774: 3770: 3762: 3759: 3757: 3754: 3753: 3752: 3749: 3747: 3744: 3742: 3739: 3737: 3734: 3732: 3729: 3725: 3722: 3720: 3717: 3716: 3715: 3712: 3710: 3707: 3705: 3702: 3700: 3697: 3695: 3694:Intravascular 3692: 3690: 3687: 3683: 3680: 3678: 3675: 3673: 3670: 3668: 3665: 3664: 3663: 3660: 3656: 3653: 3651: 3648: 3646: 3643: 3641: 3638: 3636: 3633: 3632: 3630: 3629: 3627: 3625: 3621: 3615: 3614:Synthetic MRI 3612: 3608: 3605: 3603: 3600: 3598: 3595: 3594: 3593: 3590: 3588: 3585: 3583: 3580: 3578: 3575: 3571: 3568: 3567: 3566: 3563: 3561: 3558: 3554: 3551: 3550: 3549: 3546: 3545: 3543: 3541: 3537: 3527: 3524: 3522: 3519: 3517: 3514: 3512: 3509: 3507: 3504: 3503: 3501: 3497: 3485: 3482: 3481: 3480: 3477: 3475: 3472: 3470: 3467: 3463: 3460: 3458: 3455: 3454: 3453: 3450: 3446: 3443: 3442: 3441: 3438: 3434: 3431: 3429: 3426: 3425: 3423: 3422: 3420: 3416: 3410: 3407: 3405: 3404:Electron beam 3402: 3400: 3397: 3395: 3392: 3390: 3387: 3385: 3382: 3381: 3379: 3375: 3372: 3370: 3366: 3356: 3355:Orbital x-ray 3353: 3351: 3348: 3346: 3343: 3339: 3336: 3334: 3331: 3330: 3329: 3326: 3324: 3321: 3319: 3316: 3314: 3311: 3309: 3306: 3304: 3301: 3299: 3296: 3294: 3290: 3287: 3285: 3281: 3277: 3274: 3272: 3268: 3265: 3263: 3260: 3258: 3255: 3251: 3250:Bronchography 3248: 3247: 3246: 3243: 3241: 3238: 3236: 3233: 3231: 3228: 3226: 3223: 3222: 3219: 3216: 3214: 3210: 3207: 3205: 3200: 3196: 3192: 3185: 3180: 3178: 3173: 3171: 3166: 3165: 3162: 3151: 3147: 3143: 3142:Radioactivity 3139: 3132: 3126: 3123: 3121: 3118: 3116: 3113: 3111: 3108: 3106: 3103: 3102: 3100: 3096: 3090: 3087: 3085: 3082: 3080: 3077: 3075: 3072: 3070: 3067: 3066: 3064: 3060: 3054: 3051: 3049: 3046: 3044: 3041: 3039: 3036: 3034: 3031: 3029: 3026: 3024: 3021: 3019: 3016: 3014: 3011: 3009: 3006: 3004: 3001: 2999: 2996: 2994: 2991: 2989: 2986: 2984: 2981: 2979: 2976: 2974: 2971: 2967: 2964: 2962: 2959: 2958: 2956: 2955: 2953: 2947: 2937: 2934: 2932: 2929: 2927: 2924: 2922: 2919: 2917: 2914: 2912: 2909: 2907: 2904: 2902: 2899: 2897: 2894: 2892: 2889: 2887: 2884: 2882: 2879: 2877: 2874: 2872: 2869: 2868: 2865: 2859: 2856: 2854: 2851: 2849: 2846: 2844: 2841: 2839: 2836: 2834: 2831: 2829: 2826: 2824: 2821: 2819: 2816: 2814: 2811: 2809: 2808:Beta particle 2806: 2804: 2801: 2799: 2796: 2794: 2793:Cluster decay 2791: 2789: 2786: 2785: 2783: 2781: 2777: 2771: 2768: 2766: 2763: 2761: 2758: 2756: 2753: 2751: 2748: 2746: 2743: 2741: 2738: 2736: 2733: 2732: 2730: 2728: 2724: 2721: 2719:Main articles 2717: 2712: 2705: 2700: 2698: 2693: 2691: 2686: 2685: 2682: 2671: 2667: 2663: 2662:Radioactivity 2659: 2655: 2648: 2642: 2639: 2637: 2634: 2633: 2631: 2627: 2621: 2618: 2616: 2613: 2611: 2608: 2606: 2603: 2602: 2600: 2596: 2590: 2587: 2585: 2582: 2580: 2577: 2575: 2572: 2570: 2567: 2565: 2562: 2560: 2557: 2555: 2552: 2551: 2549: 2547:Organisations 2545: 2539: 2536: 2534: 2531: 2529: 2526: 2524: 2521: 2519: 2516: 2515: 2513: 2509: 2503: 2500: 2498: 2495: 2493: 2490: 2488: 2485: 2484: 2481: 2478: 2476: 2473: 2471: 2468: 2466: 2463: 2461: 2458: 2456: 2453: 2452: 2450: 2444: 2438: 2435: 2433: 2430: 2428: 2425: 2423: 2420: 2418: 2415: 2413: 2410: 2408: 2405: 2403: 2400: 2398: 2395: 2393: 2390: 2388: 2385: 2383: 2380: 2378: 2375: 2373: 2372:Absorbed dose 2370: 2369: 2367: 2361: 2355: 2352: 2350: 2347: 2345: 2342: 2340: 2337: 2335: 2332: 2330: 2327: 2325: 2322: 2320: 2317: 2316: 2314: 2312:Main articles 2310: 2306: 2299: 2294: 2292: 2287: 2285: 2280: 2279: 2276: 2272: 2262:on 2016-12-21 2258: 2254: 2253: 2245: 2236: 2226: 2223: 2217: 2214: 2209: 2205: 2201: 2197: 2193: 2189: 2185: 2181: 2174: 2171: 2165: 2162: 2157: 2153: 2148: 2143: 2139: 2135: 2130: 2125: 2121: 2117: 2114:(6): e99112. 2113: 2109: 2105: 2098: 2095: 2090: 2086: 2081: 2076: 2072: 2068: 2064: 2060: 2056: 2052: 2048: 2041: 2038: 2027: 2026: 2022: 2017: 2008: 2006: 2002: 1989: 1988: 1981: 1978: 1965: 1961: 1955: 1952:(2–4). 2007. 1951: 1947: 1943: 1937: 1934: 1929: 1923: 1918: 1913: 1909: 1905: 1901: 1897: 1893: 1886: 1883: 1879: 1876:UNSCEAR-2008 1873: 1870: 1864: 1861: 1855: 1852: 1846: 1843: 1837: 1834: 1828: 1825: 1819: 1817: 1813: 1807: 1804: 1798: 1795: 1789: 1786: 1780: 1777: 1771: 1769: 1765: 1758: 1754: 1751: 1749: 1746: 1744: 1741: 1739: 1736: 1734: 1731: 1729: 1726: 1724: 1721: 1719: 1718:Radioactivity 1716: 1715: 1711: 1706: 1703: 1700: 1697: 1696: 1695: 1692: 1688: 1681: 1679: 1677: 1668: 1663: 1660: 1657: 1654: 1653: 1652: 1649: 1647: 1643: 1639: 1631: 1629: 1626: 1618: 1613: 1611: 1609: 1605: 1601: 1597: 1593: 1592:latent period 1589: 1585: 1581: 1575: 1567: 1560: 1557: 1555: 1551: 1547: 1544: 1541: 1537: 1533: 1530: 1527: 1523: 1519: 1516: 1514: 1510: 1506: 1504:0.3 - 1.6 mSv 1503: 1501: 1497: 1496: 1492: 1489: 1487: 1484: 1482: 1478: 1474: 1471: 1468: 1467: 1463: 1460: 1458: 1455: 1453: 1449: 1445: 1442: 1440: 1437: 1436: 1432: 1429: 1427: 1424: 1423: 1419: 1416: 1414: 1411: 1410: 1406: 1403: 1401: 1398: 1397: 1393: 1390: 1388: 1387:radiocontrast 1384: 1383: 1379: 1376: 1373: 1372: 1368: 1365: 1363: 1360: 1356: 1352: 1349: 1347: 1344: 1343: 1339: 1336: 1334: 1331: 1327: 1323: 1320: 1318: 1315: 1314: 1310: 1307: 1304: 1303: 1299: 1296: 1294: 1291: 1287: 1283: 1280: 1278: 1277:radiocontrast 1274: 1273: 1269: 1266: 1264:Single series 1263: 1261: 1257: 1254: 1250: 1247: 1244: 1242:Target organs 1241: 1240: 1233: 1228: 1226: 1221: 1219: 1214: 1213: 1208: 1202: 1200: 1198: 1193: 1174: 1167: 1152: 1145: 1127: 1124: 1121: 1118: 1115: 1109: 1102: 1098: 1078: 1075: 1072: 1069: 1066: 1058: 1054: 1046: 1043: 1037: 1018: 1015: 1012: 1003: 993: 976: 972: 964: 947: 943: 935: 932: 913: 909: 901: 886: 879: 878: 877: 857: 854: 848: 845: 842: 839: 836: 830: 825: 821: 815: 812: 806: 803: 800: 797: 794: 788: 782: 779: 776: 773: 770: 762: 758: 752: 748: 741: 736: 732: 726: 722: 716: 712: 706: 702: 698: 695: 688: 687: 686: 666: 663: 660: 651: 645: 640: 636: 630: 626: 620: 616: 610: 606: 602: 597: 593: 589: 584: 580: 574: 570: 566: 563: 556: 555: 554: 546: 543: 540: 537: 536: 532: 529: 526: 523: 522: 518: 515: 512: 510: 507: 506: 502: 499: 496: 494: 491: 490: 486: 483: 480: 477: 474: 473: 469: 466: 463: 461: 458: 457: 453: 450: 447: 445: 442: 441: 437: 434: 431: 429: 426: 425: 421: 418: 415: 413: 410: 409: 405: 402: 399: 397: 394: 393: 389: 386: 383: 381: 378: 377: 373: 370: 367: 365: 362: 361: 357: 354: 351: 349: 346: 345: 341: 338: 335: 333: 330: 329: 325: 322: 319: 317: 313: 312: 308: 305: 302: 300: 297: 296: 290: 285: 280: 279: 271: 265: 261: 252: 247: 245: 241: 238: 229: 220: 211: 202: 196: 194: 190: 189:absorbed dose 182: 177: 170: 168: 165: 156: 149: 144: 140: 137: 135: 127: 125: 121: 118: 112: 104: 102: 98: 90: 83: 81: 79: 73: 71: 70:absorbed dose 67: 63: 62:deterministic 59: 54: 52: 48: 44: 40: 36: 31: 29: 25: 21: 4126:Radiobiology 4062:Acute stroke 4028:Thermography 3783:scintigraphy 3773:Radionuclide 3761:pre-hospital 3607:Tractography 3526:Radiodensity 3428:calcium scan 3389:Quantitative 3146:Radiobiology 3028:Radiobiology 2988:Laser safety 2666:Radiobiology 2497:Survey meter 2417:Monitor unit 2396: 2363:Measurement 2354:Radiobiology 2264:. Retrieved 2257:the original 2250: 2240: 2225: 2216: 2183: 2179: 2173: 2164: 2111: 2107: 2097: 2054: 2050: 2040: 2029:. Retrieved 2019: 1992:. Retrieved 1986: 1980: 1968:. Retrieved 1964:the original 1949: 1945: 1936: 1899: 1895: 1885: 1872: 1863: 1854: 1845: 1836: 1827: 1806: 1797: 1788: 1779: 1693: 1689: 1685: 1672: 1661: 1650: 1641: 1635: 1622: 1608:radiotherapy 1577: 1574:Radiobiology 1513:Dental X-ray 1194: 1190: 1096: 1041: 1035: 930: 875: 684: 552: 262: 259: 250: 242: 236: 227: 218: 209: 200: 197: 186: 163: 154: 147: 142: 141: 138: 131: 122: 116: 108: 99: 95: 74: 65: 61: 55: 42: 32: 19: 18: 3951:Cardiac PET 3724:renal tract 3699:Gynecologic 3631:Techniques 3602:restriction 3577:Angiography 3560:Neurography 3506:Fluoroscopy 3452:Angiography 3433:angiography 3377:Techniques: 3338:Aortography 3328:Angiography 3308:Cystography 3298:Mammography 3240:Myelography 3235:Sialography 3204:radiography 2770:Ultraviolet 2765:Radio waves 2538:Respirators 2470:Ion chamber 2242:M.A. Boyd. 1994:25 November 1554:Mammography 1542:combination 1481:Extremities 1457:Spine X-ray 1317:Chest X-ray 316:Bone Marrow 43:probability 4100:Categories 3864:Full body: 3650:endoscopic 3624:Ultrasound 3553:functional 3350:Lymphogram 3345:Venography 3313:Arthrogram 2951:and health 2949:Radiation 2818:Cosmic ray 2598:Regulation 2266:2014-05-26 2031:2017-10-23 1902:(1–3): 8. 1759:References 1284:16 months 428:Oesophagus 39:stochastic 4106:Radiology 4067:Pregnancy 3946:Brain PET 3914:gamma ray 3850:DMSA scan 3704:Obstetric 3597:diffusion 3592:Sequences 3570:perfusion 3462:Pulmonary 3409:Cone beam 3303:Pyelogram 3105:Half-life 2978:Dosimetry 2813:Gamma ray 2760:Microwave 2750:Starlight 2711:Radiation 2610:NRC (USA) 2559:HPS (USA) 2460:Dosimeter 2377:Becquerel 2324:Dosimetry 2138:1932-6203 2071:1759-4812 1531:0.001 mSv 1517:0.005 mSv 1490:0.001 mSv 1464:6 months 1358:Abdominal 1311:6 months 1270:8 months 1245:Exam type 1165:is volume 1110:ρ 1007:¯ 831:ρ 822:∫ 789:ρ 749:∫ 742:⋅ 723:∑ 703:∑ 655:¯ 646:⋅ 627:∑ 607:∑ 590:⋅ 571:∑ 4085:Category 3937:positron 3457:Coronary 2755:Sunlight 2740:Infrared 2615:ONR (UK) 2605:IRR (UK) 2584:SRP (UK) 2523:Glovebox 2427:Roentgen 2208:44791936 2156:24915439 2108:PLOS ONE 2089:27578040 1712:See also 1561:7 weeks 1548:8 years 1534:3 hours 1493:3 hours 1475:2 years 1446:3 years 1433:2 years 1407:2 years 1394:7 years 1369:3 years 1340:4 years 1324:10 days 1300:2 years 161:, where 66:severity 3984:Optical 3966:PET-MRI 3746:Carotid 3741:Scrotal 3635:doppler 3565:Cardiac 3474:Thyroid 3418:Targets 3369:CT scan 2966:chronic 2589:UNSCEAR 2554:Euratom 2437:Sievert 2200:1178826 2147:4051648 2116:Bibcode 2080:5443345 1904:Bibcode 1878:Annex A 1669:History 1636:The US 1623:The UK 1590:with a 1558:0.4 mSv 1461:1.5 mSv 1420:1 year 1380:1 year 1353:1 year 1321:0.1 mSv 1308:1.5 mSv 478:surface 444:Thyroid 396:Bladder 380:Breasts 364:Stomach 291:ICRP103 58:sievert 3961:PET-CT 3736:Breast 3731:Rectal 3655:duplex 3587:Breast 3424:Heart 3148:, and 2668:, and 2206:  2198:  2154:  2144:  2136:  2087:  2077:  2069:  1970:17 May 1956:  1924:  1545:25 mSv 1540:PET-CT 1520:1 day 1391:20 mSv 1366:10 mSv 1337:12 mSv 876:Where 299:Gonads 286:ICRP60 281:ICRP26 273:Organs 3988:Laser 3910:SPECT 3719:renal 3548:Brain 3499:Other 3199:X-ray 2961:acute 2858:X-ray 2745:Light 2260:(PDF) 2247:(PDF) 2204:S2CID 1472:6 mSv 1452:Spine 1443:8 mSv 1430:6 mSv 1417:3 mSv 1404:6 mSv 1377:3 mSv 1350:3 mSv 1329:Heart 1297:7 mSv 1289:Chest 1281:4 mSv 1267:2 mSv 547:1.00 538:Total 533:0.12 519:0.01 509:Brain 503:0.01 487:0.01 470:0.01 454:0.04 438:0.04 422:0.04 412:Liver 406:0.04 390:0.12 374:0.12 358:0.12 342:0.12 332:Colon 326:0.12 309:0.08 293:2007 183:units 3756:FAST 3469:Head 2579:IRPA 2574:ICRP 2569:ICRU 2564:IAEA 2407:Gray 2196:PMID 2152:PMID 2134:ISSN 2085:PMID 2067:ISSN 1996:2012 1972:2012 1954:ISBN 1922:ISBN 1606:and 1526:DEXA 544:1.00 541:1.00 530:0.05 527:0.30 484:0.01 481:0.03 476:Bone 467:0.01 460:Skin 451:0.05 448:0.03 435:0.05 419:0.05 403:0.05 387:0.05 384:0.15 371:0.12 355:0.12 352:0.12 348:Lung 339:0.12 323:0.12 320:0.12 314:Red 306:0.20 303:0.25 288:1990 283:1977 84:Uses 3933:PET 3901:ECT 3899:3D/ 3781:2D/ 3682:ICE 3677:TEE 3672:TTE 3540:MRI 3271:DXR 3267:DXA 3262:KUB 3257:AXR 3245:CXR 2432:Rem 2422:Rad 2188:doi 2142:PMC 2124:doi 2075:PMC 2059:doi 2023:by 1912:doi 45:of 4102:: 3939:): 3916:): 3645:3D 3213:2D 3144:, 3140:, 2664:, 2660:, 2656:, 2249:. 2202:. 2194:. 2184:12 2182:. 2150:. 2140:. 2132:. 2122:. 2110:. 2106:. 2083:. 2073:. 2065:. 2055:13 2049:. 2018:. 2013:- 2004:^ 1950:37 1944:. 1920:. 1910:. 1900:21 1894:. 1815:^ 1767:^ 1610:. 240:. 181:SI 146:E( 80:. 72:. 30:. 3986:/ 3935:( 3912:( 3291:/ 3282:/ 3278:/ 3269:/ 3201:/ 3183:e 3176:t 3169:v 2703:e 2696:t 2689:v 2297:e 2290:t 2283:v 2269:. 2210:. 2190:: 2158:. 2126:: 2118:: 2112:9 2091:. 2061:: 2034:. 1998:. 1974:. 1930:. 1914:: 1906:: 1231:e 1224:t 1217:v 1175:T 1153:V 1131:) 1128:z 1125:, 1122:y 1119:, 1116:x 1113:( 1097:R 1082:) 1079:z 1076:, 1073:y 1070:, 1067:x 1064:( 1059:R 1055:D 1042:R 1036:T 1019:R 1016:, 1013:T 1004:D 977:R 973:W 948:T 944:W 931:T 914:T 910:H 887:E 858:V 855:d 852:) 849:z 846:, 843:y 840:, 837:x 834:( 826:T 816:V 813:d 810:) 807:z 804:, 801:y 798:, 795:x 792:( 786:) 783:z 780:, 777:y 774:, 771:x 768:( 763:R 759:D 753:T 737:R 733:W 727:R 717:T 713:W 707:T 699:= 696:E 681:. 667:R 664:, 661:T 652:D 641:R 637:W 631:R 621:T 617:W 611:T 603:= 598:T 594:H 585:T 581:W 575:T 567:= 564:E 516:– 513:– 500:– 497:– 464:– 432:– 416:– 400:– 368:– 336:– 254:T 251:W 237:E 231:T 228:W 222:T 219:H 213:R 210:W 204:T 201:D 164:t 158:T 155:W 150:) 148:t 117:E

Index

International Commission on Radiological Protection
radiological protection
equivalent doses
stochastic
cancer induction
ionizing radiation
sievert
absorbed dose
radiological protection

equivalent dose
committed dose

SI
absorbed dose
International Commission on Radiation Units and Measurements
Gonads
Bone Marrow
Colon
Lung
Stomach
Breasts
Bladder
Liver
Oesophagus
Thyroid
Skin
Bone
Salivary glands
Brain

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