The Z axis is also known as?

The Z axis is also known as?

• A. Out of plane dimension
• B. In-plane dimension
• C. Across width
• D. Elevational dimension

Answer: (A)

In imaging, the plane you see is defined by two directions within the plane itself. The third direction runs perpendicular to that plane and represents depth. The Z axis is this depth axis, so it is described as the out of plane dimension because it moves you into or out of the image plane. Movements within the plane would be along in-plane directions, and while some contexts call the third direction elevational, the standard label for the Z axis is out of plane.

In imaging, the plane you see is defined by two directions within the plane itself. The third direction runs perpendicular to that plane and represents depth. The Z axis is this depth axis, so it is described as the out of plane dimension because it moves you into or out of the image plane. Movements within the plane would be along in-plane directions, and while some contexts call the third direction elevational, the standard label for the Z axis is out of plane.