Introduction to Radiology:

Types of studies

The way an object looks will vary depending on the direction that the beam went through. The same object that was shown previously is shown in two different views here.

These are both images of a computer mouse and its cord. In the top image, the x-ray went through top-down and in the bottom image, the x-ray went through from the side.

You are also shown two views of the chest, one from the front and one from the side, for comparison.