Structural Shielding Design for Medical X-ray Imaging Facilities

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NCRP, 2004 - 194 pages
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Table des matières

II
1
III
2
IV
3
V
7
VI
9
VII
10
VIII
16
IX
22
XXIV
101
XXV
103
XXVI
104
XXVII
106
XXVIII
112
XXIX
113
XXX
115
XXXI
116

X
23
XII
25
XIII
28
XIV
29
XV
49
XVI
67
XVII
69
XVIII
72
XIX
73
XX
74
XXI
86
XXII
91
XXIII
94
XXXII
125
XXXIII
135
XXXIV
138
XXXV
142
XXXVI
149
XXXVII
152
XXXVIII
157
XXXIX
160
XL
164
XLI
173
XLII
184
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Page 152 - Commission recommends a system of dose limitation, the main features of which are as follows: (a) no practice shall be adopted unless its introduction produces a positive net benefit; (b) all exposures shall be kept as low as reasonably achievable, economic and social factors being taken into account...
Page 154 - AEK is the sum of the initial kinetic energies of all the charged particles liberated by indirectly ionizing particles in a volume element of the specified material...
Page 169 - The Council's activities are made possible by the voluntary contribution of the time and effort of its members and participants and the generous support of the following organizations: Alfred P. Sloan Foundation...
Page 152 - Controlled area. A defined area in which the occupational exposure of personnel to radiation or to radioactive material is under the supervision of an individual in charge of radiation protection.
Page 154 - Occupancy factor. The factor by which the workload should be multiplied to correct for the degree or type of occupancy of the area in question. RBE dose.
Page 153 - Exposure -- A measure of the ionization produced in air by x or gamma radiation. It is the sum of the electrical charges on all ions of one sign produced in air when all electrons liberated by photons in a volume element of air are completely stopped in air, divided by the mass of the air in the volume element. The special unit of exposure is the roentgen.
Page 169 - Federal Communications Commission Federal Emergency Management Agency Genetics Society of America Health Physics Society Institute of Electrical and Electronics Engineers, Inc. Institute of Nuclear Power Operations International Brotherhood of Electrical Workers National Aeronautics and Space Administration National Association of Environmental Professionals National Electrical Manufacturers Association National Institute...
Page iv - The Council wishes to express its appreciation to the Committee members for the time and effort devoted to the preparation of this Report.

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