. The American journal of roentgenology, radium therapy and nuclear medicine . s he has evolvedis of great value for the obtaining of a finerdefinition in the radiograph of deep struc-tures. There exists so much confusion regard-ing the nature of the Bucky diaphragm andits method of application that I am temptedto utilize your valuable space for a review ofBuckys work. The prevention of the fogging of the re-cording surface by secondary and scatteredradiations has been an ever recurring prob-lem of roentgenology, and the nearest ap-proach to anv method for their radical re- moval has been made
. The American journal of roentgenology, radium therapy and nuclear medicine . s he has evolvedis of great value for the obtaining of a finerdefinition in the radiograph of deep struc-tures. There exists so much confusion regard-ing the nature of the Bucky diaphragm andits method of application that I am temptedto utilize your valuable space for a review ofBuckys work. The prevention of the fogging of the re-cording surface by secondary and scatteredradiations has been an ever recurring prob-lem of roentgenology, and the nearest ap-proach to anv method for their radical re- moval has been made by Bucky in ^ccording to his invention there is placedbetween the sensitive plate or screen and thebody a grid of interlaced strips of metal,making a sort of screen of many chambers,not unlike in structure to a honeycomb. Thewalls of these chambers are so arranged thatthey are parallel to the direction of the pri-mary rays and do not obstruct their passage. - ■ 1 iiij:B:±:i:itEilti CKXXXXKXXKXXX)CXXXXXXXXXKXX)CXXXXXXXKXXXK)3000000000000CKXXXXXXXXKXX)3000000000000. \/:^;!iim^^m:\i^m^ Fig. I. In the upper pari of the figure there are shownparallel and unidirectional walls, forming the ductsor chambers of the grid. In the middle, part of agrid is shown which consists of walls intersectingeach other rectangularly, so that individual duct,s orchambers of rectangular cross section will the lower part a construction of the ducts ofchambers of the grid is shown, whereby cylin-drically bent metal sheets are used for making thechambers or ducts of the grid, the metal sheetsbeing connected with each other by short connect-ing bridges, as indicated in the drawing. Fig. 2. In the upper part of the figure is shown a gridhaving the shape of a section of the shell of acylinder. In this form, because of being able toobtain radially directed walls the chambers may bemade very narrow and the grid itself thin. In themiddle part of the figure is shown a cross sectionof such a c
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Keywords: ., bookcentury1900, bookdecade1900, bookidamericanjour, bookyear1906
