. Radiography, X-ray therapeutics and radium therapy . ltersmay be left in situ for about fifteen hours for anexposure. This may be repeated in a months radium tube is enclosed in rubber tubing 2 This is introduced into the lumen of the bowel,and the length of rubber is strapped outside, servingto hold the radium tube in position. A soft rubbercatheter will be found an excellent holder for theradium tube. A thin rubber tube placed over thisone and sealed at one end serves the double purposeof a filter and of keeping the radium tube clean. Ina number of cases it will be possi
. Radiography, X-ray therapeutics and radium therapy . ltersmay be left in situ for about fifteen hours for anexposure. This may be repeated in a months radium tube is enclosed in rubber tubing 2 This is introduced into the lumen of the bowel,and the length of rubber is strapped outside, servingto hold the radium tube in position. A soft rubbercatheter will be found an excellent holder for theradium tube. A thin rubber tube placed over thisone and sealed at one end serves the double purposeof a filter and of keeping the radium tube clean. Ina number of cases it will be possible to pass a longflexible tube from the rectum through the loweropening of a colotomy wound, when several tubesmay be introduced, and applied to the whole ofthe canal affected by the growth. In this way athorough exposure may be obtained at one treat-ment. During the exposure the tube containing theradium tube can be moved several times upwardsand downwards, so as to ensure an equal distribution of the radiationover the entire surface of the Fig. 245.—Diagram to illus-trate method of introduc-ing radium tubes into lowerbowel. The dark lines representthe radium tubes, the shadedareas the growth. Theradium tubes are enclosed ina long rubber tube. In Cancer of the Prostate Gland This may be treated by four methods : (1) By the rectum. (2) By tubes introduced into the bladder. The tube is enclosed in acatheter. (3) By a number of tubes introduced into the substance of the perineal route may be employed. (4) Post-operative treatment. Tubes can readily be introduced intothe bladder after operation. When treating by method No. 1 radium should be filtered through2 mm. of platinum. Comparatively long exposures may be given, up totwelve to fifteen hours, using 100 mgrms. of radium. RADIUM IN CANCER 377 No. 2.—This does not allow of very thick filters, therefore the exposuresmust be reduced proportionately. By method No. 3, provided the tubes can be quite surrounde
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