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KUANG Zhonghua, LI Cheng, LI Lanjun, HU Zhanli, ZHANG Ling, TAN Siqing, ZHANG Jian, HU Qibin, WANG Xiaohui, YANG Yongfeng. Progress of Small Animal PET Scanners with High Spatial Resolution and High Sensitivity[J]. Nuclear Physics Review, 2016, 33(3): 336-344. doi: 10.11804/NuclPhysRev.33.03.336
Citation: KUANG Zhonghua, LI Cheng, LI Lanjun, HU Zhanli, ZHANG Ling, TAN Siqing, ZHANG Jian, HU Qibin, WANG Xiaohui, YANG Yongfeng. Progress of Small Animal PET Scanners with High Spatial Resolution and High Sensitivity[J]. Nuclear Physics Review, 2016, 33(3): 336-344. doi: 10.11804/NuclPhysRev.33.03.336

Progress of Small Animal PET Scanners with High Spatial Resolution and High Sensitivity

doi: 10.11804/NuclPhysRev.33.03.336
Funds:  National Natural Science Foundation of China (81527804, 11575285, 81401410); Basic Research Program of Shenzhen, China (JCYJ20140417113430558, JCYJ20150630114942310)
  • Received Date: 2015-11-02
  • Rev Recd Date: 2015-11-17
  • Publish Date: 2016-09-20
  • As the most sensitive and quantitative molecular imaging technique,small animal positron emission tomography (PET) has become a widely used tool in biomedical research such as in animal model of human disease,development of new drugs and the evaluation of new therapeutics.In this paper,first the history,the efforts to improve the spatial resolution and sensitivity as well as the commercialization process of small animal PET scanner are reviewed.Then the factors that affect the spatial resolution and sensitivity of PET scanner such as crystal size,detector geometry,positron range,photon noncollinearity and imaging reconstruction are discussed in detail.The depth of interaction effect which hinders the simultaneous achievement of PET spatial resolution and sensitivity are also discussed.Finally the recent progress made in the following areas of small animal PET instrumentation are introduced:(1) high density,short light decay constant and bright scintillator,(2) compact,high gain,good timing resolution,low bias voltage and MRI compatible silicon photomultiplier,(3) depth encoding detectors by using different methods,a detector using dual-ended readout,identifying 0.43 mm×0.43 mm×20 mm crystals and achieving a 2.4 mm depth of interaction resolution was introduced in detail,(4) small animal PET scanners using depth encoding detectors,a prototype scanner using high resolution dualended readout detectors and achieving an average of 0.55 mm spatial resolution in the whole field of view was introduced in detail.(5) MRI compatible small animal PET inserts and the advantage of simultaneous PET/MRI imaging,(6) image reconstruction and data correction of small animal PET,the filter back projection and iterative reconstruction algorithms are compared and a few key directions of PET image reconstruction will be presented.
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Progress of Small Animal PET Scanners with High Spatial Resolution and High Sensitivity

doi: 10.11804/NuclPhysRev.33.03.336
Funds:  National Natural Science Foundation of China (81527804, 11575285, 81401410); Basic Research Program of Shenzhen, China (JCYJ20140417113430558, JCYJ20150630114942310)

Abstract: As the most sensitive and quantitative molecular imaging technique,small animal positron emission tomography (PET) has become a widely used tool in biomedical research such as in animal model of human disease,development of new drugs and the evaluation of new therapeutics.In this paper,first the history,the efforts to improve the spatial resolution and sensitivity as well as the commercialization process of small animal PET scanner are reviewed.Then the factors that affect the spatial resolution and sensitivity of PET scanner such as crystal size,detector geometry,positron range,photon noncollinearity and imaging reconstruction are discussed in detail.The depth of interaction effect which hinders the simultaneous achievement of PET spatial resolution and sensitivity are also discussed.Finally the recent progress made in the following areas of small animal PET instrumentation are introduced:(1) high density,short light decay constant and bright scintillator,(2) compact,high gain,good timing resolution,low bias voltage and MRI compatible silicon photomultiplier,(3) depth encoding detectors by using different methods,a detector using dual-ended readout,identifying 0.43 mm×0.43 mm×20 mm crystals and achieving a 2.4 mm depth of interaction resolution was introduced in detail,(4) small animal PET scanners using depth encoding detectors,a prototype scanner using high resolution dualended readout detectors and achieving an average of 0.55 mm spatial resolution in the whole field of view was introduced in detail.(5) MRI compatible small animal PET inserts and the advantage of simultaneous PET/MRI imaging,(6) image reconstruction and data correction of small animal PET,the filter back projection and iterative reconstruction algorithms are compared and a few key directions of PET image reconstruction will be presented.

KUANG Zhonghua, LI Cheng, LI Lanjun, HU Zhanli, ZHANG Ling, TAN Siqing, ZHANG Jian, HU Qibin, WANG Xiaohui, YANG Yongfeng. Progress of Small Animal PET Scanners with High Spatial Resolution and High Sensitivity[J]. Nuclear Physics Review, 2016, 33(3): 336-344. doi: 10.11804/NuclPhysRev.33.03.336
Citation: KUANG Zhonghua, LI Cheng, LI Lanjun, HU Zhanli, ZHANG Ling, TAN Siqing, ZHANG Jian, HU Qibin, WANG Xiaohui, YANG Yongfeng. Progress of Small Animal PET Scanners with High Spatial Resolution and High Sensitivity[J]. Nuclear Physics Review, 2016, 33(3): 336-344. doi: 10.11804/NuclPhysRev.33.03.336
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