tendon tissue—is not well visualized with
X-rays, they do cast a shadow on the film
because they absorb and attenuate some of
the X-ray beam. Fortunately, both bone and
soft tissue attenuation is nonlinear— it varies
with the X-ray energy level and is directly
proportional to bone density and content.
That is, the denser the bone, the more it
attenuates the beam. Knowing that the
attenuation levels of bone and soft tissue are
both nonlinear and proportional to their