发明名称 METHOD FOR PRODUCING IMAGES IN DIGITAL DENTAL RADIOGRAPHY
摘要 The inventive device for digital dental radiography has a source of Xradiation, a detector device, a correcting device and a temperature control device. Said detector device consists of a CCD array on which a scintillator layer is arranged and the radiation geometry of the detector device is constant in relation to the source of X-radiation. The correcting device corrects the electrical signals generated by the CCD array by compensating fluctuations in the electrical signals of the individual elements of the CCD array caused by a dark current of said array elements, by the array elements having different degrees of conversion efficiency and by the inhomogeneity of the scintillator layer. The temperature control device ensures that the detector device remains at a constant temperature during the detection of reference signals and image signals.
申请公布号 CA2295893(A1) 申请公布日期 1999.05.06
申请号 CA19972295893 申请日期 1997.10.23
申请人 FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V. 发明人 KOSTKA, GUENTHER;SCHOLZ, OLIVER;HANKE, RANDOLF;BAUER, NORBERT;SCHMITT, PETER
分类号 A61B6/14;G01T1/00;(IPC1-7):A61B6/14 主分类号 A61B6/14
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