Towards a continuous crystal APD-based PET detector design
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- 作者：Peter Bruyndonckx ; Cedric Lemaî ; tre ; Dennis Schaart ; Marnix Maas ; D.J. (jan) van der Laan ; Magalie Krieguer ; Olivier Devroede ; Stefaan Tavernier
- 关键词：Positron emission tomography ; APD ; Scnitillator ; Neural network ; Depth of interaction ; Statistical positioning algorithm
- 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- 出版年：2007
- 出版时间：1 February 2007
- 年：2007
- 卷：571
- 期：1-2
- 页码：182-186
- 全文大小：664 K
文摘
Monolithic scintillator blocks provide an efficient way to significantly increase the sensitivity of high-resolution positron emission tomography (PET) systems. Using statistical or neural network-based positioning schemes, the measured intrinsic detector resolution for perpendicular incident photons is 1.7 mm full-width at half-maximum (FWHM) for 10 mm thick LSO blocks and 2.0 mm FWHM for 20 mm thick LSO blocks. Because the positioning algorithms determine the incidence position as opposed to the combination of interaction position and interaction depth, a very good parallax correction can be achieved. Energy and detector time resolution were 11.5 % FWHM and 1.6 ns FWHM, respectively.