·
Concept of windowing: to manipulate the contrast of an image for
example a CT image.
·
Window level:
CT that corresponds to the centre CT number of the window.
·
Window width:
The number of CT numbers that covers the grey scale range from black to
white --
CT numbers between P1 and P2. CT
numbers above P2 white and CT numbers below P1 is black.
·
A narrow window width produces a high
contrast image.
