Aliasing effects in digital images of line-pair phantoms.
Line-pair phantoms are commonly used for evaluating screen-film systems. When imaged digitally, aliasing effects give rise to additional periodic patterns. This paper examines one such effect that medical physicists are likely to encounter, and which can be used as an indicator of super-resolution.
Department of Radiology, Thomas Jefferson University, Philadelphia, Pennsylvania 19107-5563, USA.
Michael
M
Albert
Daniel J
DJ
Beideck
Predrag R
PR
Bakic
Andrew D A
AD
Maidment
D016477:Artifacts; D005583:Fourier Analysis; D019047:Phantoms, Imaging; D011786:Quality Control; D011856:Radiographic Image Enhancement / Q000295:instrumentation* / Q000379:methods*; D018401:Sample Size; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted