week 9: contrast

Question 1

what is Baxes

Answer 1

brightness attributes of an image

extent to which adjacent patches of contrast differ

Question 2

subject contrast

Answer 2

difference in signal prior to recording
e.g difference in x-ray intensities leaving tube originally

C=A-B / A

Question 3

detector contrast

Answer 3

the way in which the detector detects input information can alter the image contrast outputted

Question 4

what is digital contrast

Answer 4

input info is rescaled between 0-255.

Question 5

what is displayed contrast

Answer 5

true denotion of contrast

amount of difference seen between adjacent structures.