Generally speaking,radiographic images are the result of x-ray photons being absorbed to varying degrees based on tissue density and thickness.There are five radiographic densities seen on radiographs: air or gas,water,fat,mineral,and metal.The lowest subject contrast between these five densities is between
A)bone and air.
B)water and mineral.
C)water and fat.
D)metal and air.

Question

Quizplus · Accepted Answer

The ability of the contrast media used in radiographic procedures to enhance subject contrast depends greatly on the atomic number of the element used in a particular medium and the concentration of atoms of the element per volume of the medium.The average atomic number difference between fat and water as a tissue density is very small and therefore yields the lowest subject contrast.

Generally Speaking,radiographic Images Are the Result of X-Ray Photons Being