MTF evaluation of a phosphor-coated CCD for x-ray imaging

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MTF evaluation of a phosphor-coated CCD for x-ray imaging

Gambaccini, M; Taibi, A; Del Guerra, A; Marziani, M; Tuffanelli, A

Physics in medicine & biology, 12/1996, Volume: 41, Issue: 12

Journal Article

A novel digital x-ray detector has been assembled. The imaging system is based on a phosphor-coated charge-coupled device (CCD) obtained by direct deposition of a gadolinium oxysulphide scintillator onto the detector surface. The modulation transfer function has been measured along the two directions of the digital coordinates with the narrow slit technique. A resolution limit of about 20 line pairs per mm has been obtained for both directions. The high spatial resolution currently demanded in mammography can be achieved with this imaging system.

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Gambaccini, M | Taibi, A | Del Guerra, A | Marziani, M | Tuffanelli, A

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