. Radiography, X-ray therapeutics and radium therapy . Fig. 238.—Circular applicator suitablefor the treatment of superficial skiulesions. (Armbrecht, Nelson & Co.). Fig. 239.—Applicator in box. (Siemens.)This form is particularly useful in the treatment of superficial skin lesions. the applicator is kept at a distance from the skin by means of several layersof lint, the danger of an overdose to a particular urea is greatly diminished. 362 RADIATION THERAPEUTICS Psoriasis.—Other methods, notablyX-rays filtered, give good technique is similar to that employed in chronic eczema. When
. Radiography, X-ray therapeutics and radium therapy . Fig. 238.—Circular applicator suitablefor the treatment of superficial skiulesions. (Armbrecht, Nelson & Co.). Fig. 239.—Applicator in box. (Siemens.)This form is particularly useful in the treatment of superficial skin lesions. the applicator is kept at a distance from the skin by means of several layersof lint, the danger of an overdose to a particular urea is greatly diminished. 362 RADIATION THERAPEUTICS Psoriasis.—Other methods, notablyX-rays filtered, give good technique is similar to that employed in chronic eczema. When theradium is enclosed in platinum tubes, the same procedure is necessary, butit must be remembered that in this case a hard ray is being employed, because^ to \ mm. of platinum (the average thickness of the tubes used to hold theradium) is known to cut off a large percentage of the Beta rays as well as theAlpha rays. To obtain the same area of action as when the flat applicatorsare used, two or more of the small tubes may be employed, longer exposuresbeing necessary. When using unscreened applicators the exposures will beshort, and given at frequent inte
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