fo. . 7" am at yt , Ces oo 4: Re De O'ed12 -2- Attns ?, Laner . Raveuver 23, 1953 , . St. Lovie, Vinsourl, an Lavestigation of this methed has been made for arveral years in which over 200 patients showed some aymptons of brain tuner, Sy injecting dilodofluoreacain labelled with T-132 and surveyirur the skull with a specially developed sensitivn scin~ tillation counter the tumors of 30 patianta out of 65 on which this particular method wag used were correctly localized, er an accuracy f 4G per cant. Although this method has definite limitations, con- tinuing une and ieprovement should gaxe this a usefal tool to the orain surgeon in his efforts to inerease the survivel rate in patients witr ‘this usually fatal type of tenor, oe 3. Thorium I In Treatment of Skin Cancer “UmCLASSIFIED Many opinions have been expressed regargin the Dtolegically. effactive radiations emanating from thoriumI, andvarious theories hava bean postulated to account for the frequently.‘ebeervad exythenn and pipnantation which follow the application ofthis radioactive material to the skin of man, 2 After a three year atudy of this problem a group of inveatigaters nave concluded ‘hat the alpha particles bosbarding the skin from the surface are canahle of producing erythema and pigeentatian. ine relative stological effectivenesa of the beta and gauma components of the froriunm i is many tinas less than thetef the alpha component as judged by the depres eyerythema and pigmentation produced. It was further obuerved that/Selocting & eul‘able vehicle, thoriun X ean be sade ‘o penctrate the skin and thus deposit tila radloactive material -clov ‘he smrface. ‘The blolegical effeetivoness of this radioiao‘one !s thug greatly aunanced in the treatment of akin cancer avd ather pathological conditions of the skin. LArme US DOE ARCHIVES 326 U.S. ATOMIC ENERGY COMMISSION RG DoE Bo TORIAN. Conm. Collection Box 333 Folder 32 get Ae #23 OFFICE p |_-_------.--.------ fe wetter ee nnn fone en ee ee ee fee ee ee SURNAME P |--.----- ef wen| wn een ene een n ee ee ee enn [ee DATE ® Joo eee fee Form AEC-318 U. 5. GOVERNMENT PRINTING OFFICE 16—-62761-2 ¥ _