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Comparison of flat-panel detector and image-intensifier detector for cone-beam CT

2002; Elsevier BV; Volume: 26; Issue: 3 Linguagem: Inglês

10.1016/s0895-6111(02)00008-3

1879-0771

Rika Baba, Yasutaka Konno, Ken Ueda, Shigeyuki Ikeda,

Radiation Dose and Imaging

We evaluated a flat-panel detector (FPD) (scintillator screen and a-Si photo-sensor array) for use in a cone-beam computed tomography (CT) detector and compared it with an image-intensifier detector (IID). The FPD cone-beam CT system has a higher spatial resolution than the IID system. At equal pixel sizes, the standard deviation of noise intensity of the FPD system is equal to that of the IID system. However, the circuit noise of the FPD must be reduced, especially at low doses. Our evaluations show that the FPD system has a strong potential for use as a cone-beam CT detector because of high-spatial resolution.