(A–F) A wedge of wood radiographed from three different angles produces three distinctly different radiographic shape outlines with varying radiographic densities, depending on how much thickness of wood the beam passed through. (Incidentally, note the whorl representing the knot in the wood. Remember how you can't hammer a nail through a knot? This is because the knot is an area of more tightly packed wood cells. So—the knot has a greater radiodensity than the surrounding wood and shows up as a white whorl.) Source: GENERAL PRINCIPLES OF MUSCULOSKELETAL IMAGING, Fundamentals of Musculoskeletal Imaging Citation: McKinnis LN. Fundamentals of Musculoskeletal Imaging; 2014 Available at: http://mhmedical.com/ Accessed: July 31, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved
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