2012 Fiscal Year Final Research Report
Development of an optical fiber based MR compatible gamma camera for SPECT/MRI system
| Project/Area Number |
23659598
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Radiation science
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| Research Institution | Nagoya University (2012)
Kobe City College of Technology (2011) |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | SPECT / MRI / 一体型 |
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| Research Abstract |
Optical fiber is a promising material for integrated PET/MRI systems. However, it is unclear this material can be used for a SPECT/MRI system. We developed and tested an optical fiber based block detector for SPECT/MRI system and tested its performance. 1.2 x 1.2 x 6mm Y2SiO5 (YSO) pixels were combined to form a 15 x 15 block and coupled to an optical fiber image guide. The image guide had a 22mm x 22mm rectangular input and an output. The input of the optical fiber based image guide was bent for 90 degree and the output was optically coupled to a 1-inch square high quantum efficiency position sensitive photomultiplier tube (HQE-PSPMT). Parallel hole collimator made of tungsten plastic was mounted on the YSO block. Intrinsic and system performance were evaluated. The system resolution was 1.7mm FWHM at 1.5mm from the collimator surface, and the sensitivity was 0.06%. We conclude that developed optical fiber based YSO block detector is promising for SPECT/MRI system.
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