A method for increasing the resolution of scanned projection radiography and other digital X-ray systems.
A method for increasing the sampling frequency of digital X-ray systems is described. The method employs discrete, stepwise magnetic deflection of the focal spot and the recombination of the resulting displaced images. The technique was applied to a GE CT/T 8800 scanner operating in "Scout View" mode. The hardware and software modifications were minor. The transverse resolution was shown to improve from 0.63 to 0.9 line pairs per mm, using a test phantom. The effect of the improvement in resolution is also illustrated in the human. The possibility of further improving the resolution of the system is discussed.
Checkley
D R
DR
Zhu
X P
XP
Hickey
D S
DS
Hughes
J K
JK
Carter
J B
JB
Isherwood
I
I
D000842:Ankle / Q000000981:diagnostic imaging; D006801:Humans; D008961:Models, Structural; D011856:Radiographic Image Enhancement; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods*