title: [Selection of parameters for multi-objective frequency processing in CR mammography: visual evaluation of mammographic phantom images].
abstract: The multi-objective frequency processing installed in the FCR5000R (Fuji Film Medical) is superior to the conventional processing used in the FCR9000 (Fuji Film Medical) in evaluating frequency processing. A suitable combination of parameters for multi-frequency-processing in computed radiography (CR) mammography was evaluated. The paired-comparison method using phantom images was performed for the visual evaluation. Results showed that the evaluation score of mass and fiber lesions depended on the multi-frequency balance type (MRB) parameter, and the low-frequency-cycle emphasizing parameter had the highest score. In contrast, the score of microcalcifications depended on the degree of multi-frequency enhancement (MRE). The most suitable parameters for the multi-frequency processing of every size and type of breast lesion were not obtained. However, MRB=A, MRT=p, and MRE=1.0 can be recommend for CR mammography.
authors.affiliation: Department of Radiology, Yamaguchi University Hospital.
authors.forename: Kumi
authors.initials: K
authors.lastname: Ishihara
authors.forename: Etsuko
authors.initials: E
authors.lastname: Ishida
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Iwanaga
authors.forename: Masahiro
authors.initials: M
authors.lastname: Hashida
authors.forename: Taizo
authors.initials: T
authors.lastname: Sanada
mesh_terms: D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008327:Mammography / Q000379:methods*; D015588:Observer Variation; D019047:Phantoms, Imaging