Study of a high-resolution, 3D positioning cadmium zinc telluride detector for PET.
Study of a high-resolution, 3D positioning cadmium zinc telluride detector for PET.
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DOI:
10.1088/0031-9155/56/6/004
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发表时间:
2011-03-21
影响因子:
3.5
通讯作者:
Levin CS
中科院分区:
文献类型:
--
作者:
Gu Y;Matteson JL;Skelton RT;Deal AC;Stephan EA;Duttweiler F;Gasaway TM;Levin CS
This paper investigates the performance of 1 mm resolution Cadmium Zinc Telluride (CZT) detectors for positron emission tomography (PET) capable of positioning the 3-D coordinates of individual 511 keV photon interactions. The detectors comprise 40 mm × 40 mm × 5 mm monolithic CZT crystals that employ a novel cross-strip readout with interspersed steering electrodes to obtain high spatial and energy resolution. The study found a single anode FWHM energy resolution of 3.06±0.39% at 511 keV throughout most the detector volume. Improved resolution is expected with properly shielded front-end electronics. Measurements made using a collimated beam established the efficacy of the steering electrodes in facilitating enhanced charge collection across anodes, as well as a spatial resolution of 0.44±0.07 mm in the direction orthogonal to the electrode planes. Finally, measurements based on coincidence electronic collimation yielded a point spread function with 0.78±0.10 mm FWHM, demonstrating 1 mm spatial resolution capability transverse to the anodes – as expected from the 1 mm anode pitch. These findings indicate that the CZT-based detector concept has excellent performance and shows great promise for a high-resolution PET system.
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影响因子:
1.8
作者:
Bergeron, Melanie;Cadorette, Jules;Lecomte, Roger
通讯作者:
Lecomte, Roger
影响因子:
2.1
作者:
Erickson, JC;Yao, HW;Greaves, M
通讯作者:
Greaves, M
影响因子:
3.5
作者:
Yang, YF;Tai, YC;Cherry, SR
通讯作者:
Cherry, SR
影响因子:
3.8
作者:
Gu, Yi;Pratx, Guillem;Levin, Craig S.
通讯作者:
Levin, Craig S.
DOI:
10.1016/j.nima.2004.03.013
发表时间:
2004-07-11
影响因子:
1.4
作者:
Levin, CS;Habte, F;Foudray, AM
通讯作者:
Foudray, AM