Comparison of image quality and radiation dose between an image-intensifier system and a newer-generation flat-panel detector system

• Verfasst von: Weis, Meike [VerfasserIn]
• Verfasst von: Henzler, Claudia [VerfasserIn]
• Verfasst von: Schönberg, Stefan [VerfasserIn]
• Verfasst von: Neff, Wolfgang [VerfasserIn]
• Titel: Comparison of image quality and radiation dose between an image-intensifier system and a newer-generation flat-panel detector system
• Titelzusatz: technical phantom measurements and evaluation of clinical imaging in children
• Verf.angabe: Meike Weis, Claudia Hagelstein, Theo Diehm, Stefan O. Schoenberg, K. Wolfgang Neff
• Jahr: 2016
• Jahr des Originals: 2015
• Umfang: 7 S.
• Fussnoten: Gesehen am 08.02.2019 ; Published online: 19 October 2015
• Titel Quelle: Enthalten in: Pediatric radiology
• Ort Quelle: Berlin : Springer, 1973
• Jahr Quelle: 2016
• Band/Heft Quelle: 46(2016), 2, Seite 286-292
• ISSN Quelle: 1432-1998
• DOI: doi:10.1007/s00247-015-3456-z
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Children
• Sach-SW: Digital fluoroscopy
• Sach-SW: Flat-panel detector
• Sach-SW: Image intensifier
• Sach-SW: Pediatric fluoroscopy
• Sach-SW: Radiation protection
• K10plus-PPN: 1587418762

Abstract

Background: Many image-intensifier fluoroscopy systems have been replaced by flat-panel detectors in recent years. Objective: To compare the level of contrast, image resolution and radiation dose between an image-intensifier and a newer-generation flat-panel detector system in a pediatric radiology unit. Materials and methods: We compared two systems - a conventional image intensifier and a newer-generation flat-panel system. We measured image quality and radiation dose using a technical phantom. Additionally, we retrospectively compared age-matched fluoroscopic pediatric voiding cystourethrography (n = 15) and upper gastrointestinal investigations (n = 25). Results: In phantom studies image contrast was equal while image resolution was higher and mean radiation dose lower using the flat-panel system (P < 0.0001). In pediatric investigations, mean dose area product was significantly reduced on the flat-panel system for upper gastrointestinal investigation (45 ± 38 μGy*m2 vs. 11 ± 9 μGy*m2; P < 0.0001) and for voiding cystourethrography (18 ± 20 μGy*m2 vs. 10 ± 12 μGy*m2; P = 0.04). Conclusion: The newer flat-panel system performs at lower dose levels with equal to better image quality and therefore seems to be the more suitable technique for pediatric fluoroscopy in comparison to image-intensifier systems.