Modern surgery, general and operative . ated Localization of Foreisrn Bodies 1463 on one side to correspond with the notches on the cross-bar of the focus point on the target of the tube (the source of the rays) is accuratelydetermined by sighting from cross-lines on one side of the lead-glass tube shieldto cross-lines on the opposite of the shield (/), and is exactly 6 inches abovethe level of the notched bar of the localizer. The relation between the focuspoint and the sensitive plate is obtained by means of a clamp on the edge ofthe table (/). This clamp has two flat metallic
Modern surgery, general and operative . ated Localization of Foreisrn Bodies 1463 on one side to correspond with the notches on the cross-bar of the focus point on the target of the tube (the source of the rays) is accuratelydetermined by sighting from cross-lines on one side of the lead-glass tube shieldto cross-lines on the opposite of the shield (/), and is exactly 6 inches abovethe level of the notched bar of the localizer. The relation between the focuspoint and the sensitive plate is obtained by means of a clamp on the edge ofthe table (/). This clamp has two flat metallic arms projecting over the sen-sitive plate and a fixed rod externally, against which the upright bar of thecarriage rests. In making the localization the patient is placed on the table as if for surgicaloperation. i\ sensitive plate, 10 by 12 or 11 by 14 inches (g), is put under thepart containing the foreign body, the tube clamp applied, and the tube carriage,localizer, and tube are adjusted and leveled. Three of the adjustable rods of. Fig. 1024.—Bullet localized by method described in the text. Removed by author. the localizer are made to touch the surface of the patient at as widely separatedpoints as possible, in which positions they are tightly clamped. These threespots are touched with silver nitrate. After all adjustments are examined, and the height of the tube from theplate noted, the carriage cross-bar is elevated and the localizer removed. Bylowering the tube-carrier to 6 inches below its original position, the focus pointof the tube will be at the level formerly occupied by the cross-bar of the local-izer, and if the carriage cross-bar (z) is shifted to a definite distance to one sideof zero, the focus-point will be in the corresponding position held before by anotch on the cross-bar of the localizer. After carefully adjusting the tube-holder an exposure is made. The carriage is then shifted to the opposite sideof zero in the same extent and manner and a second ex
Size: 1761px × 1418px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectsurgery
