Περίληψη:
I-ImaS (Intelligent Imaging Sensors) is a European project aiming to produce new, intelligent x-ray imaging systems using novel APS sensors to create optimal diagnostic images. Initial systems have been constructed for medical imaging; specifically mammography and dental encephalography. However, the I-ImaS system concept could be applied to all areas of x-ray imaging, including homeland security and industrial QA. The I-ImaS system intelligence is implemented by the use of APS technology and FPGAs, allowing real-time analysis of data during image acquisition. This gives the system the capability to perform as an on-the-fly adaptive imaging system, with the potential to create images with maximum diagnostic information within given dose constraints. The I-ImaS system uses a scanning linear array of scintillatorcoupled 1.5-D CMOS Active Pixel Sensors to create a full 2-D x-ray image of an object. This paper describes the parameters considered when choosing the scintillator elements of the detectors. A study of the positioning of the sensors to form a linear detector is also considered, along with a discussion of the potential losses in image quality associated with creating a linear sensor by tiling many smaller sensors. Preliminary results show that the detectors have sufficient performance to be used successfully in the initial mammographie and encephalographic I-ImaS systems that are currently under construction. © 2008 IEEE.
Συγγραφείς:
Griffith, J.A.
Metaxas, M.G.
Royle, G.J.
Venanzi, C.
Esbrand, C.
Cavouras, D.
Fant, A.
Gasiorek, P.
Georgiou, H.
Hall, G.
Jones, J.
Leaver, J.D.G.
Longo, R.
Manthos, N.
Noy, M.
Østby, J.M.
Rokvic, T.
Schulerud, H.
Theodoridis, S.
Triantis, F.A.
Turchetta, R.
Speller, R.D.
Λέξεις-κλειδιά:
Construction industry; Data acquisition; Diagnostic radiography; Digital image storage; Eigenvalues and eigenfunctions; Health; Image acquisition; Image enhancement; Image quality; Image sensors; Imaging systems; Imaging techniques; Intelligent systems; Medical imaging; Optoelectronic devices; Phase shifters; Scanning; Sensors; Technology transfer; X ray analysis; X ray apparatus, (OTDR) technology; Active pixel sensor (APS); Adaptive imaging; Applied (CO); diagnostic imaging; Diagnostic information; European; Homeland security (HLS); Intelligent imaging; Linear arrays; Linear sensors; Multi elements; On the fly (OTF); Real time analysis; System concepts; System intelligence; Under construction; X-ray detectors; X-ray imaging; X-ray imaging systems, Detectors
