Davidson, James Mackenzie, Sir, 1856-1919 · New York, P.B. Hoeber · leaf 71
the X-ray photographs were taken. As stretchedthreads can be made to represent the linear path ofX rays, the paths of any of the rays with which oneis dealing can be dehneated by placing fine threads 3 34 LOCALIZATION BY X RAYS AND STEREOSCOPY into each of the two notches, the threads… … Fig. 25. extension is shown in the illustration as a projectingpiece beyond the portion where the cross threads aresuspended. In the diagrammatic representation ofthe T-piece (Fig. 27), there is shown a horizontal scalewhich enables the operator to deal with any reasonabledisplacement he chooses to…
X-rays · Eye · Foreign bodies (Surgery)
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