Given 25 mAs and a milliamperage of 100, calculate the exposure time.

In a PA projection of the chest being used for cardiac evaluation, the heart measures 15.2 cm on the radiographic image.  If the magnification factor is known to be 1.3, what is the actual diameter of the heart?

Which of the following changes will NOT affect magnification?

Which of the following describes the relationship between changes in SID and maintaining radiographic density?

A 3 inch object to be radiographed at a 36 inch SID lies 4 inches from the image receptor.  What will be the image size?

A film transmits 25% of the incident light.  What is the optical density?

The primary controlling factor of contrast is:

Pertaining to the following illustration, which letter corresponds to the useful densities within the diagnostic range? C Curve(3).jpg

The heavy black densities produced on a radiographic image after processing correspond to what region of the characteristic curve?

Which of the following films will demonstrate the lowest contrast? Films A & B(3).jpg