. The American journal of roentgenology, radium therapy and nuclear medicine . gamma rays, but came from two or threedays to as late as five weeks after thetreatment and lasted from a few days tosix weeks. (This has been a matter ofcareful statistical research.) We thought atfirst that it was due to K radiationsfrom the lead (that is to say, specific forlead) or possibly to some excited secondarybeta radiations. To obviate this we firsttried placing two to four layers of thinrubber between the orifice of the cylinder 2-in. cylinder, and the one at C, Figure 3,is curved to fit the end of the cy
. The American journal of roentgenology, radium therapy and nuclear medicine . gamma rays, but came from two or threedays to as late as five weeks after thetreatment and lasted from a few days tosix weeks. (This has been a matter ofcareful statistical research.) We thought atfirst that it was due to K radiationsfrom the lead (that is to say, specific forlead) or possibly to some excited secondarybeta radiations. To obviate this we firsttried placing two to four layers of thinrubber between the orifice of the cylinder 2-in. cylinder, and the one at C, Figure 3,is curved to fit the end of the cylinder B ofthe same figure. At D, Figure 3, are shown several circu-lar applicators of a different type; theseare used when it is not necessary to guardso carefully against scattering, but whensome lead protection is advisable, andalso in treating with the portable suspen-sion table (described later). This set ofapplicators consists of a series of fourrings, each 2 in. high and fitting one insidethe other as shown. In the figure one israised above another to demonstrate the.
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