title: Comparison of flat-panel detector and image-intensifier detector for cone-beam CT.
abstract: We evaluated a flat-panel detector (FPD) (scintillator screen and a-Si photo-sensor array) for use in a cone-beam computed tomography (CT) detector and compared it with an image-intensifier detector (IID). The FPD cone-beam CT system has a higher spatial resolution than the IID system. At equal pixel sizes, the standard deviation of noise intensity of the FPD system is equal to that of the IID system. However, the circuit noise of the FPD must be reduced, especially at low doses. Our evaluations show that the FPD system has a strong potential for use as a cone-beam CT detector because of high-spatial resolution.
authors.affiliation: Central Research Laboratory, Hitachi Ltd., 1-280 Higashi-koigakubo, Kokubunji-shi, Tokyo 185-8601, Japan. r-baba@crl.hitachi.co.jp
authors.forename: Rika
authors.initials: R
authors.lastname: Baba
authors.forename: Yasutaka
authors.initials: Y
authors.lastname: Konno
authors.forename: Ken
authors.initials: K
authors.lastname: Ueda
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Ikeda
mesh_terms: D004867:Equipment Design; D006225:Hand / Q000000981:diagnostic imaging; D006801:Humans; D007564:Japan; D019047:Phantoms, Imaging; D011856:Radiographic Image Enhancement / Q000295:instrumentation*; D014057:Tomography, X-Ray Computed / Q000295:instrumentation*