Index 



287 



Illustrative dose distributions, 219 

 Inactivation of bacteriophage S-13, 

 158 



— of elementary biological units, 



ion density and, 123 



— of vaccina virus, 159 



— of viruses, 156 



— of viruses in aqueous suspension 



by X-rays. 157 



— of viruses, relative efficiency of 



ionizing radiations for the, 124 



Indicators, biological, 92 



Induced chromosome aberrations, 

 147 



Influence of ion density on radio- 

 chemical yield, 121 



— of linear ion density, 119 



— of physics in biology and medi- 



cine, 10 



Ingestion or inhalation of radio- 

 active materials, 272 



Inhibition of division of bacteria. 

 161 



Inhibitory effect of radiations on 

 regeneration, 101 



Injuries, mechanics of brain, 74 



— , skull and brain movement in, 

 77, 78, 79 



Injurious and lethal effects of radi- 

 ation, 98 



Ink-writing electrocardiograph, 39 



Insect cuticle and cell membrane, 

 analogy between, 30 



7^ cuticle, artificial tanning and 

 hardening of. 26 



— cuticle as test material, 21 



— cuticle, mechanism of sensitiz- 



ing action of fat solvents on, 

 28, 29 



— cuticle, structure of, 24 

 Inspection of radiological depart- 

 ments, 278 



Integral dose, 194 

 — ^^dose and tolerafice, 269 

 '■ — dose, mathematical theorv of, 

 196 



— dose, values of, 205, 206 



International protective recom- 

 mendations, 266 

 Interstitial radium, 236 

 Intracavitary irradiation, 235 

 Investigations of the erythrocyte 



envelope. 17 

 Ion clusters, separation of. 120 



— density and the inactivation of 



elementary biological units, 123 



— densitv, influence of linear, 



119' 



— density on radiochemical yield, 



influence of, 121 



— density produced by different 



ionizing particles, 118 

 Ionization and biological effect, 

 87 



— chamber, Grimmett's, 200 



— chamber, wall effect of, 181 



— method of measuring radiation, 



176. 177 

 Ionizing radiations. 175 



— radiations, biological effects of, 



114 



— radiations for the inactivation of 



viruses, relative efficiency of, 

 124 



— radiations, genetic effects of, 270 



— radiations, relative efficiencies of, 



127 



— radiations, structural changes in- 



duced by chromosomes by dif- 

 ferent, 126 



— radiations, tolerance doses for, 



267 

 Irradiation field prearranged using 



dose contours, 220, 221 

 Isochromatid breaks, 128 

 Isodose charts, 217 



— curves for a contact therapy field, 



217 



— curves for a deep therapy field, 



218 



— curves modified by wedge filter, 



223. 224 



— distribution, 208 



— distributions for various qualities 



of radiation, 204 

 Isophotes, 69, 70 



