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- W2005500691 abstract "ONE has to examine the dried skull only casually to note the roentgenologic difficulties in its examination with special reference to the paranasal sinuses. We all agree that roentgenograms of the paranasal sinuses must be of excellent quality in contrast, detail, and definition. Just how these results are best obtained is still a debatable question, and, on the whole, roentgenographic examinations of the paranasal sinuses are far from being standardized. A recent text-book (Proetz) on the subject begins, “Discouragingly little is known about sinuses.” The use of the Potter-Bucky diaphragm routinely in head work appears never to have been practical. The reason is clear to all. Just which method of procedure is the best, that is, whether to use the Bucky, or to dispense with it, and use the long narrow cone, does not come within the scope of this paper. The point we wish to make is that, if one so desires, he may use the flat rectangular Bucky grid for any of the many tube tilts and shifts required in the examination of the skull. One other point which we think has been fairly well established in sinus work is that an 8 × 10 film divided in halves is of sufficient size to show any particular group of sinuses diagnostically. This procedure saves both time and money. So far as we know, the only solution of adapting the flat Bucky grid to various angles, up to the present time, has been a Bucky so constructed that interchangeable grids especially built for the various angles were used, or the spiral type of grid. For some reason neither of these types has thus far gained wide popularity in America. Some years ago we made a spiral grid. At that time the idea of an interchangeable grid, which we first learned of through the work of Dr. Potter, did not occur to us. The spiral grid we constructed appeared to be an excellent piece of workmanship, and on trial it made the most beautiful circles on films anyone might wish to see. After discovering our mistake along this line we then conceived the idea of mounting a flat rectangular grid so as to accomplish the results we had hoped to obtain from a spiral grid. This was accomplished by reassembling the parts of a regulation stock Bucky and having a specially built small grid, 1 to 4 ratio, 0.25 inch thick, installed. This grid and the other mechanical parts of the Bucky were mounted on a rotating aluminum disk, covered with lead to protect the unexposed film. This disk has a diaphragm in the center, 5 × 8 in., permitting exposure of one-half of the film. The disk is mounted within a metal ring, termed the orbit. In the orbit are ball-bearing rollers that fit into a track on the disk (Fig. 1). The orbit is marked off into degrees, starting with 0 at the top and going to the right and left through the equator of the orbit, giving a total range of 180°. The disk has an indicating hand pointing to the degree of rotation to the right or left from the vertical position." @default.
- W2005500691 created "2016-06-24" @default.
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- W2005500691 date "1933-01-01" @default.
- W2005500691 modified "2023-09-24" @default.
- W2005500691 title "New Application of Flat Bucky Grid to Any Angle with Special Reference to Sinus Work" @default.
- W2005500691 doi "https://doi.org/10.1148/20.1.1" @default.
- W2005500691 hasPublicationYear "1933" @default.
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