special subjects
X Rays
Uses of X Rays
X-rays are typically the first imaging test done to evaluate the arms, legs, or chest and sometimes the spine and abdomen. These body parts contain important structures with very different densities that are easily distinguished on x-rays. Thus, x-rays are used to detect the following: Overview of Fractures : The almost white bone contrasts clearly with the gray muscles around it. Overview of Pneumonia : The black air in the lungs contrasts clearly with the white infected tissues, which block more of the x-rays. Intestinal Obstruction : The black air in the blocked intestine contrasts clearly with the gray surrounding tissues. 