title: RVG-ui: a sensor to rival direct-exposure intra-oral x-ray film.
abstract: The RVG-ui is a solid-state system for dental x-ray imaging combining a charge-coupled device (CCD) of small pixel size (19.5 microns) with a caesium iodide (CsI) scintillator. It features two sizes of sensor with receptive areas that approach the size of No. 1 and No. 2 periapical x-ray films. The spatial resolution of the RVG-ui exceeds 20 lp/mm, rivaling direct-exposure intra-oral x-ray film when the latter is optimally exposed and processed. The recording latitude of the RVG-ui for clinically acceptable images is 25:1, making exposure error unlikely. In features such as speed of image acquisition, reduction in radiation dose, retrieval of data, and organization and storage of images, the RVG-ui system surpasses traditional x-ray film. Furthermore, it is possible to make accurate length measurements very quickly, and to apply an artificial intelligence program to determine the probability of proximal dental caries in enamel and dentin.
authors.affiliation: Division of Radiology and Imaging Sciences, School of Dentistry, University of Louisville, Louisville, Kentucky 40292, USA. agfarm01@gwise.louisville.edu
authors.forename: A G
authors.initials: AG
authors.lastname: Farman
authors.forename: T T
authors.initials: TT
authors.lastname: Farman
mesh_terms: D001185:Artificial Intelligence; D002586:Cesium; D003731:Dental Caries / Q000000981:diagnostic imaging; D003743:Dental Enamel / Q000000981:diagnostic imaging; D003804:Dentin / Q000000981:diagnostic imaging; D004867:Equipment Design; D015902:Gamma Cameras; D006801:Humans; D007091:Image Processing, Computer-Assisted; D016247:Information Storage and Retrieval; D007454:Iodides; D011829:Radiation Dosage; D011856:Radiographic Image Enhancement / Q000295:instrumentation* / Q000379:methods; D019252:Radiography, Dental, Digital / Q000295:instrumentation* / Q000379:methods; D014962:X-Ray Film
chemical_list: D007454:Iodides; D002586:Cesium; C040050:cesium iodide