Acceptance testing of Computed Radiography systems.
Acceptance testing of computed radiography systems (CR) is required to verify not only image quality but also compliance with the manufacturer's specifications. Therefore, CR acceptance testing is manufacturer-specific. This paper describes a series of performance tests performed on a large number of CRs (FCR 5000, Fuji) recently acquired by our institution. In particular we describe the following tests: dark noise, uniformity, exposure calibration, linearity and autoranging, limiting resolution, noise and low-contrast resolution, spatial accuracy, laser-beam function, erasure thoroughness, aliasing, grid response. Special attention is given to the practical aspects related to measurement and subsequent image analysis. We report the results obtained in the various tests. No significant variations from the reference levels were found. Nonetheless, in some cases the operating procedures had to be adapted.
Riccardi
Lucia
L
Struttura Complessa Interaziendale di Fisica Sanitaria, Azienda Ospedaliera Università degli Studi di Padova, Azienda ULSS 16. lucia.riccardi@unipd.it
Cauzzo
Maria Cristina
MC
Fabbris
Roberto
R
D016477:Artifacts; D002138:Calibration; D007091:Image Processing, Computer-Assisted / Q000592:standards*; D007834:Lasers; D019047:Phantoms, Imaging; D011786:Quality Control; D012015:Reference Standards; D015203:Reproducibility of Results; D015898:Tomography Scanners, X-Ray Computed / Q000592:standards*