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PURPOSE Active matrix flat-panel imagers (AMFPIs) incorporating thick, segmented scintillators have demonstrated order-of-magnitude improvements in detective quantum efficiency (DQE) at radiotherapy energies compared to systems based on conventional phosphor screens. Such improved DQE values facilitate megavoltage cone-beam CT (MV CBCT) imaging at clinically practical doses. However, the MV CBC...
UNLABELLED The SET-3000 G/X (clinical tomograph with high resolution and a large axial field of view) is a 3-dimensional (3D) (only) dedicated PET camera with germanium oxyorthosilicate (GSO) and bismuth germanate (BGO) scintillators. The main characteristic of the SET-3000 G/X PET scanner is 3D continuous-emission and spiral-transmission (CEST) scanning, yielding a reduction in whole-body scan...
Photorefractive crystals exhibit large optical nonlinearities1 and have great potential in optical data processing.2 The extrinsic photorefractive effect in these electro-optic and photoconductive materials is rather well understood. The band-transport model' has been successfully employed to describe photorefraction in crystals such as the sillenite compounds, Bi12SiO2 0 and Bi12GeO 2 0 (BGO)....
2. Mullani NA. The need for three-dimensional imaging in PET. Proceedings o/ the international symposium on current and hdttre aspects q[ cancer diagm)sis with positron emission tomography. Sendal, Japan: ! 986:288-296. 3. Mullani NA. A phantom for quantitation of partial volume effects in PET. IEEE Tram Nucl Sci 1989;36:983-987. 4. Senda M, Yonekura Y, Tamaki N, et al. Interpolating scan and o...
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