[Evaluation of metal artifact in computed radiography].
We know that computed radiography (CR) has many factors to generate artifacts, such as the over / under shoot, aliasing and more. Recently, we encountered an artifact, we call a metal artifact, not attributable to any known factors in clinical images. To elucidate the cause of this artifact, we did some experiments with an in-house phantom. The experiments showed that the metal artifact was seen only when we put an object that absorbs X-rays parallel to the scanning line on imaging plate (IP). From these results, we speculated that the factor causing the afterglow is associated with photo-stimulated luminescence from IP.
Department of Radiology, Tenri Yorozu Soudansho Hospital.
Kazushi
K
Kitamura
Chieko
C
Kida
Hidetaka
H
Hayashi
Shigeo
S
Nishiki
D016477:Artifacts; D007091:Image Processing, Computer-Assisted; D049449:Luminescence; D008670:Metals; D019047:Phantoms, Imaging; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods*
D008670:Metals