. Medical and surgical therapy . on the screen, after moving the X-ray tube, are accept-able. The methodof Haret, the planchette ofHirtz, the skia-metre of Vialet[], etc., all giverapid circum-stances as mo-biUty, with therespiratory move-ments and inducedmovements, helpthe anatomicaldiagnosis of thepusitioh of theprojectile. We give here asurgical com-pass, of our owndesign, which hasthe advantage notonly of giving veryrapidly on thescreen, withoutany calculation ortables, the depthof the projectile(a fixed point ofthe apparatus at-tached to thescreen is substi-tuted in the p
. Medical and surgical therapy . on the screen, after moving the X-ray tube, are accept-able. The methodof Haret, the planchette ofHirtz, the skia-metre of Vialet[], etc., all giverapid circum-stances as mo-biUty, with therespiratory move-ments and inducedmovements, helpthe anatomicaldiagnosis of thepusitioh of theprojectile. We give here asurgical com-pass, of our owndesign, which hasthe advantage notonly of giving veryrapidly on thescreen, withoutany calculation ortables, the depthof the projectile(a fixed point ofthe apparatus at-tached to thescreen is substi-tuted in the placeFig. 47.—Surgical compass, with direct previously OCCU-controls under the X-ray screen. (The • , , ,,authors invention, patented.) P^®^ j ^^^ P^^ jecfcile), but also of being adjusted directly under the screen in such a. DIAGNOSIS AND INDICATIONS 475 way as to allow, if necessary, an exact localisation ofthe projectile during the operation. A short descrip-tion of the method of using ^ ^c/e?^ the apparatus -•-::;,,.-] (see Figs. 47and 47 bis) issufficient. (1) The pa-tient is placedunder the ra-dioscope, theexistence ofthe projectileverified, andthe approxi-mate situationdetermined bya right-angledprojection. (2) Threeguiding surface-marks arenoted on the skin, thethree points of the com-pass are placed in contactwith these (position A),and a first right-angledprojection of the projec-tile is marked on thescreen. A second pro-jection is marked accord-ing to the known displace-ment of the tube. Thepatient is then takenaway. (3) The bar C (position B) is placed in the compass.*The X-ray tube being placed in the original position,the image of 0 is brought to coincide with the first
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsurgery, bookyear1918
