Title of article :
Image-quality performance of an a-Si : H-based X-ray imaging system for digital mammography
Author/Authors :
Darambara، نويسنده , , D.G and Taibi، نويسنده , , A and Speller، نويسنده , , R.D، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Abstract :
We have been investigating the potential of large area active matrix flat-panel a-Si : H imaging arrays for full-field digital X-ray mammography. To optimise the overall performance of such an imaging system under mammographic conditions, four different Gd2O2S : Tb phosphor screens (i.e. Lanex Fast-Back, Regular, Fine and MinR-2000) were employed and our full-field detector was integrated with the Feinfocus DIMA (Direct Magnification) PLUS MII mammographic unit. The spatial resolution and the image noise of the digital detector were measured and the X-ray imaging performance of the whole system was also evaluated with two mammographic phantoms. It was deduced from the results of this study that Regular screen offers the best compromise between sensitivity and spatial resolution and exhibits better overall image-quality performance than that of a conventional mammography system.
Keywords :
digital mammography , Amorphous-silicon detector , Direct magnification , Full-field detector
Journal title :
Nuclear Instruments and Methods in Physics Research Section A
Journal title :
Nuclear Instruments and Methods in Physics Research Section A