286 



Index 



Enzyme, lipid, protein relationship, 



pattern of, 20 

 Epithelial tumors, cell categories 



in, 165 

 Epithelioma, reaction chart of, 168, 



169, 171 

 Equivalence, principle of, 186 

 Equivalent rontgens, 191 

 Erythrocyte envelope, investigation 



of the, 17 

 Ethyl alcohol by blowfly larvae, 



uptake of, 22 

 Evaluation of sympathetic denerva- 

 tion, 54 

 External irradiation, 235 

 Extrapolation chamber, redefinition 



of the rontgen and the, 187 



Fat solvents and permeability, 

 23-25 



— solvents on insect cuticle, mech- 

 anism of sensitizing action of, 

 28, 29 



Field area and volume dose, 203 



Fields, arrangement and number of, 

 204 



Filters, 250 



— , wedge, 208 



Focus-skin distance, 203 



Forces to be considered in brain 

 injuries, 74 



Forward scatter, 250 



Free air chamber, 181 



Future methods in radiotherapy, 

 240 



Gamma rays, measurement in 



rontgens. 184 

 Gene mutations caused by radiation, 



141 

 — mutations caused by X-rays, 



95 

 Genes, stability of chromosomes 



and, 140 



Genetic effects of ionizing radia- 

 tions, 270 



— effects of radiation, 95, 138 



— effects of ultraviolet radiations, 



153 

 Gram rontgen, 89 

 Gray's theory, 186 

 Green's calliper, 226 

 Grimmett's ionization chamber, 



200 



H 



Half -value layer of a beam. 179 

 Hardening of insect cuticle, arti- 

 ficial tanning and, 26 

 Hearing aids, 50 

 Heart sounds, recording of, 51 

 Heat, clinical application of, 60 



— convection, 60, 61 



— dosage, calculation of, 64 



— measurement, special problems 



of, 65 



— therapy, physical basis of, 59 



— tolerance, limits of, 75 



— transfer by radiation, 61 



— transfer, methods of, 60 

 Hemoglobinometer, 52 

 Heterodyne oscillator, 48 

 High-voltage beam, physical ad- 

 vantages of, 252 



— therapy, alteration in skin re- 



action, 255 



— X-ray equipment, 243 



— X-rays, treatment of carcinoma 



of the rectum, 257 

 Histological analysis of radiation 



effects in human carcinomata, 



quantitative, 162 

 History of medical physics, 4 

 Homologous series, law of, 32 

 Hot baths, 61 



— water bottle, 61 

 Hot-air cabinet, 60 



Human carcinomata, radiation ef- 

 fects in, 162 

 Hydrogen-ion concentration, 51 



