Digital Detector Array Image Quality for Various GOS Scintillators

Shafer, Mark; Carestream; France

Shafer, M.E.; Carestream Health, Inc; USA
White, B.S.; Carestream Health, Inc; USA
Toepfer, K.; Carestream Health, Inc; USA
Russel, W.H.; Carestream Health, Inc; USA
Roussilhe, J.; Carestream Health, Inc; France

ID: ECNDT-0632-2018

Digital detector arrays (DDA’s) are becoming more prevalent for industrial radiographic inspection. The type of scintillator used with the DDA determines the overall achievable image quality. The DRZ-HIGH, DRZ-PLUS, DRZ-STANDARD, and DRZ-FINE Gadolinium Oxysulfide Terbium (GOS:Tb) activated scintillators were investigated in combination with the Carestream DRX-PLUS digital detector array panel. Three beam conditions were utilized for exposure as follows; RQA-5 (70 kVp, 21 mm Aluminum), RQA-9 (120 kVp, 1 mm Copper and 4 mm Aluminum), and NDT (220 kVp, 8 mm Copper). The Detective Quantum Efficiency (DQE), Modulation Transfer Function (MTF), sensitivity, and interpolated basic spatial resolution (iSRb) were determined for each scintillator and beam condition. The results of this investigation are presented in this paper.