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We are developing a brain positron emission tomography (PET) system prototype with long optical cables to minimize mutual interference between our PET components and magnetic resonance imaging (MRI) system. Our PET system consists of 16 PET detector modules which are placed in Faraday cages spaced equally in a 32 cm diameter ring. By using 20 m length optical cables rather than electrical connections,...
<?Pub Dtl?>This paper presents the development of filtering methods for positron emission tomography (PET) signals contaminated by radio frequency (RF) pulses for combined PET and clinical 3-T magnetic resonance imaging (MRI). The filtering methods include software, hardware, and hybrid correction methods. In the software correction method, PET signals are assessed, and valid signals are identified...
The aim of this study is to develop a MR compatible PET that is insertable to MRI and allows simultaneous PET and MR imaging of human brain. The brain PET having 72 detector modules arranged in a ring of 330 mm diameter was constructed and mounted in a 3-T MRI. Each PET module composed of 4 × 4 matrix of 3 mm × 3 mm × 20 mm LYSO crystals coupled to a tileable 4 × 4 array Geiger-mode avalanche photodiode...
The purpose of this study is cross-compatibility of PET and MRI was characterized to explore the optimal method overcoming possible interferences between them. MR phantom images were acquired by placing the PET components inside and outside RF-coil in 7-T MRI to examine the effect of the relative position of PET detector and RF-coil on MRI. Theoretical evaluation of shielding effectiveness (SE) of...
The aim of this study is to develop a MR compatible PET that is insertable to MRI and allows simultaneous PET and MR imaging of human brain. The brain PET having 72 detector modules arranged in a ring of 330 mm diameter was designed. Each PET module composed of 4 ? 4 matrix of 3 mm ? 3 mm ? 20 mm LYSO crystals coupled to a tileable 4 ? 4 array Geigermode avalanche photodiode (GAPD) and designed to...
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