title: Relationships between smooth- and small-phase conditions in X-ray phase-contrast imaging.
abstract: We analyze some relationships between the small- and smooth-phase conditions in propagation-based X-ray phase-contrast imaging. Although these conditions are generally well-understood, our analysis yields the identification of physical conditions under which they are mathematically equivalent. We also demonstrate that the smooth-phase condition depends not only on the imaging system resolution and object-to-detector distance, but also on the topography of the wavefield phase function.
authors.affiliation: Toshiba Medical Research Institute USA, Vernon Hills, IL 60061, USA.
authors.forename: Daxin
authors.initials: D
authors.lastname: Shi
authors.forename: Mark A
authors.initials: MA
authors.lastname: Anastasio
mesh_terms: D000465:Algorithms; D021621:Imaging, Three-Dimensional / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods*; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity