Radiological Laser Film Scanner Sampling Artifact

Yoshiyuki Ishimitsu; Kazuyuki Arai; Ricky K. Taira; H. K. Huang

doi:10.1117/12.968773

27 June 1988 Radiological Laser Film Scanner Sampling Artifact

Yoshiyuki Ishimitsu, Kazuyuki Arai, Ricky K. Taira, H. K. Huang

Proceedings Volume 0914, Medical Imaging II; (1988) https://doi.org/10.1117/12.968773
Event: Medical Imaging II, 1988, Newport Beach, CA, United States

Abstract

Artifacts seen on laser digitized radiographs are analyzed and mathematically explained based on the concept of image contrast. Our investigation considered the following determinants: 1)laser spot size, 2)signal processing components, 3)image characteristics, and 4)observer performance. A functional relationship between the sampling interval, laser spot size, and the contrast of the artifact seen on the digitized image is derived. This relationship is verified experimentally using a variable spot size laser source and sampling at interval of 175.0 microns. The problem of digitizing artifact seen on film images obtained with anti-scatter grids is discussed.

Citation Download Citation

Yoshiyuki Ishimitsu, Kazuyuki Arai, Ricky K. Taira, and H. K. Huang "Radiological Laser Film Scanner Sampling Artifact", Proc. SPIE 0914, Medical Imaging II, (27 June 1988); https://doi.org/10.1117/12.968773

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