. The American journal of roentgenology, radium therapy and nuclear medicine . inthe shape of a spoon (Fig. 19) is the mostsatisfactory applicator. The small metalcontainer holding the radium is placedin the bowl and the lead is bent over threesides of it. Over this a hard rubber tube isslipped to filter the beta rays on theexposed side; thus the rectal mucosa isscreened by lead except the portiondirectly over the prostatic area; there theirritating rays are filtered out by thehard rubber tube. When the applicatoris inserted and placed in the desiredposition, the open side of the bowl isplaced
. The American journal of roentgenology, radium therapy and nuclear medicine . inthe shape of a spoon (Fig. 19) is the mostsatisfactory applicator. The small metalcontainer holding the radium is placedin the bowl and the lead is bent over threesides of it. Over this a hard rubber tube isslipped to filter the beta rays on theexposed side; thus the rectal mucosa isscreened by lead except the portiondirectly over the prostatic area; there theirritating rays are filtered out by thehard rubber tube. When the applicatoris inserted and placed in the desiredposition, the open side of the bowl isplaced next lo the prostate, the handle isbent at right angles and attached to thethighs or buttocks l>\ surgeons method allows the patient to move around freely while recumbent and whilethe applicator is still in position, insteadof subjecting him to the discomfort ofremaining in one position on an examiningtable to which a rigid mechanical armis attached. In making the urethral appli-cations, screened only by the standardsilver container, nothing has proved -so. Fig. 19. Cross-section through the pelvis. Recta] andurethral applicators in place. Inset: rectal applica-tor; (a) hard rubber sheath, lb) lead spoon, and (c)standard radium tube. useful as a stick of soft solder, the end olwhich is threaded so that the containermay be directly screwed on. The stick ofsolder can be bent to adapt it to thevarious prostatic curves, and is easilykept in position ( Fig. 19). The results of the increase in dosageand more thorough radiation of the Roenti ;en Ra ays and Radium in Carcinoma of tin- Prostate 281 prostate are difficult to interpret, becausethis group of patients was treated morerecently than the others. A casual examina-tion of Table vm might lead to the con-clusion that the change in treatment hadnot resulted in improvement. DISCUSSION OF TABLE VIII Obviously in dealing with recent cases,the duration of the disease to the time of treatment only per cent died th
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