Davidson, James Mackenzie, Sir, 1856-1919 · New York, P.B. Hoeber · leaf 74
plane is first measured.This is the Z co-ordinate, and actually represents theexact depth of the centre of the bullet from the partof the patients skin which rested upon the photo- THE CROSS-THREAD METHOD 37 graphic plate. How shall this position on the patientsskin be determined ? The position is…
X-rays · Eye · Foreign bodies (Surgery)
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