DuDo-RAC: Dual-domain optimization for ring artifact correction in photon counting CTLow-frequency ring artifactsPixel-wise polynomial functionsDual-domain optimizationPolar transformationsTo better address high and low frequency ring artifacts in PCD-CT images, this study proposes the adaptive optimization...
NON-UNIFORM PHOTON-COUNTING DETECTOR ARRAY ON A FOURTH-GENERATION RING TO ACHIEVE UNIFORM NOISE AND SPECTRAL PERFORMANCE IN Z-DIRECTIONA computed tomography (CT) detector apparatus includes a plurality of detector arrays arranged in a ring, wherein for at least one array that includes a plurality ...
Light from a pulsed LED (570 nm, 12 nm FWHM) was coupled into a 32 cm linear optical resonator and a ring-down waveform obtained on a gated photon counter. Cavity time constants observed were on the order of 3-4 µs, yielding effective optical path-lengths in excess of 1 km. In ...
T. Obina, et al., "Measurement of the Longitudinal Bunch Structure in the Photon Factroy Positron Storage Ring with a Photon Counting Method", Nucl. Instru. Methods A354 (1995).Obina T , Kasuga T , Tobiyama M , et al . Measurement of t he longitudinal bunch structure in t he photon...
E. and Myers, K., "Cavity ring-down lossmeter using a pulsed light emitting diode source and photon counting," Measurement Science and Technology, Vol. 18, No. 1, 2006, pp. 147-154.Cavity ring-down lossmeter using a pulsed light emitting diode source and photon counting. Thompson, ...