A loss of brightness around the edge of the fluoroscopic image due to the curve of the photocathode is:

Question

Quizplus · Accepted Answer

Vignetting is a loss of brightness or darkness around the edges of an image, caused by the curve of the photocathode. Noise refers to random fluctuations in the image, pincushion appearance is a distortion of the image where the edges bow inward, and magnification refers to a change in the size of the image. None of these options accurately describe the loss of brightness around the edge of a fluoroscopic image due to the curve of the photocathode.

A Loss of Brightness Around the Edge of the Fluoroscopic