title: [Usefulness of photon counting X-ray radiography for diagnostic imaging of the thorax: experimental and clinical studies].
abstract: To evaluate the usefulness of photon counting X-ray radiography (quantum radiography, QR) for diagnostic imaging of the thorax, comparative studies between QR and the conventional screen-film system (SF) were performed. Exposure dose, spatial resolution and density resolution on QR were evaluated in the experimental study. The ability of QR to describe normal structures and several kinds of abnormal shadows was evaluated in the clinical study. The relative exposure dose of QR was lower than that of SF, while the spatial resolution of QR was slightly inferior to that of SF. However, the density resolution of QR was superior to that of SF. Clinically, QR was superior to SF in the description of normal structures and several kinds of abnormal shadows. In conclusion, it was considered that QR is useful for diagnostic imaging of the thorax.
authors.affiliation: Department of Radiology, Hyogo Prefectural Nishinomiya Hospital.
authors.forename: K
authors.initials: K
authors.lastname: Kimura
authors.forename: E
authors.initials: E
authors.lastname: Itouji
authors.forename: M
authors.initials: M
authors.lastname: Kono
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008875:Middle Aged; D017785:Photons; D011829:Radiation Dosage; D013902:Radiography, Thoracic / Q000379:methods*; D013896:Thoracic Diseases / Q000000981:diagnostic imaging