ABSTRACT
The active matrix Ÿat-panel imagers (AMFPIs) are being developed for x-ray detection systems. Wronski investigated high-gain avalanche rushing photodetectors (HARP) for avalanche multiplication (Wronski and Rowlands 2008). This study showed that avalanche gains enable x-ray quantum noise limited performance throughout the entire exposure range in radiography and Ÿuoroscopy, respectively. In addition, a charge-coupled device (CCD) is
CONTENTS
6.1 Introduction .................................................................................................. 67 6.2 Method .......................................................................................................... 69 6.3 Results ...........................................................................................................72 6.4 Conclusions ................................................................................................... 73 References ............................................................................................................... 74
compared with AMFPI for direct digital radiography (Widmer 2008). Direct digital radiography (DDR) detectors are Ÿat-panel and CCD types. Computed radiography (CR) and DDR provide quality diagnostic images. CR is a mature technology while DDR is an emerging technology.
