Affiliations: Department of Biomedical Engineering, University of Akron, Akron, Ohio 44325 | Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221 | Department of Radiology, Northeastern Ohio Universities College of Medicine (NEOUCOM), Rootstown, Ohio 44272 | Division of Diagnostic Radiology, The Cleveland Clinic Foundation, Cleveland, Ohio 44195
Abstract: In this study, measurements of the electrical and detection parameters of the Cd1–xZnxTe detectors, within the x-ray diagnostic energy range, have been performed with the aim of optimizing the image quality parameters of these solid-state-ionization detectors. Namely, the leakage current and system capacitance of the x-ray imaging system have been measured as they relate to signal parameters. Similarly, the detected signal and noise contributions were measured and related to the radiation exposure and tube current setting. Furthermore, the detector contrast has been experimentally determined. The experimental results indicate that Cd1–xZnxTe detectors have low leakage current, high resistivity, and high detector contrast resolution. Therefore, they appear to be very attractive for imaging applications with applications in x-ray digital radiography.
