Qualification test of a MPPC-based PET module for future MRI-PET scanners

Kurei, Y.; Kataoka, J.; Kato, Toshiyuki; Fujita, Takuya; Funamoto, H.; Tsujikawa, Takayuki; Yamamoto, Seiichi

doi:10.1016/j.nima.2014.04.040

Cited by 3 publications

(3 citation statements)

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“…As detailed in Ref. [17], only slight degradation was found in the spatial resolution of the PET images. The x-direction resolutions for a point source ( 22 Na) when the MPPC-PET module is inside the MRI under fast spin echo (FSE) and gradient echo (GE) were 1.657 0.07 mm (FWHM) and 1.7070.08 mm (FWHM), respectively, as 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 Conversely, the signal-to-noise ratio (SNR) of the MR images was only degraded by 5% when the MPPC-PET detector was used.…”

Section: New Challenges For Mri-petmentioning

confidence: 76%

Recent progress of MPPC-based scintillation detectors in high precision X-ray and gamma-ray imaging

Kataoka

Kishimoto

Fujita

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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Section: New Challenges For Mri-petmentioning

confidence: 76%

Recent progress of MPPC-based scintillation detectors in high precision X-ray and gamma-ray imaging

Kataoka

Kishimoto

Fujita

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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“…In our previous paper, we reported that the average signal intensity of MR images was degraded by 5% when operating with a 2ch trial PET system [9]. Despite increasing the number of sensors to 8ch, we succeeded in reducing such noise to less than 5% this time with the ABS-PET system.…”

Section: Discussion Of Mri Operating With Petmentioning

confidence: 83%

“…We have experimented with the Multi-Pixel Photon Counter (MPPC)-based trial PET system consisting of two-modules (operating with the 4.7 T MRI system), and reported that the trial PET system and MRI system have little impact on each other [9]. Therefore, we developed a more advanced version of the MRI-PET gantry with eight MPPC-based PET modules.…”

Section: Introductionmentioning

confidence: 99%

Development of a MPPC-based prototype gantry for future MRI-PET scanners

Kurei¹,

Kataoka²,

Kato³

et al. 2014

J. Inst.

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We have developed a high spatial resolution, compact Positron Emission Tomography (PET) module designed for small animals and intended for use in magnetic resonance imaging (MRI) systems. This module consists of large-area, 4 × 4 ch MPPC arrays (S11830-3344MF; Hamamatsu Photonics K.K.) optically coupled with Ce-doped (Lu,Y) 2 (SiO 4 )O (Ce:LYSO) scintillators fabricated into 16 × 16 matrices of 0.5 × 0.5 mm 2 pixels. We set the temperature sensor (LM73CIMK-0; National Semiconductor Corp.) at the rear of the MPPC acceptance surface, and apply optimum voltage to maintain the gain. The eight MPPC-based PET modules and coincidence circuits were assembled into a gantry arranged in a ring 90 mm in diameter to form the MPPC-based PET system. We have developed two types PET gantry: one made of non-magnetic metal and the other made of acrylonitrile butadiene styrene (ABS) resins. The PET gantry was positioned around the RF coil of the 4.7 T MRI system. We took an image of a point 22 Na source under fast spin echo (FSE) and gradient echo (GE), in order to measure the interference between the MPPC-based PET and MRI. The spatial resolution of PET imaging in a transaxial plane of about 1 mm (FWHM) was achieved in all cases. Operating with PET made of ABS has no effect on MR images, while operating with PET made of non-magnetic metal has a significant detrimental effect on MR images. This paper describes our quantitative evaluations of PET images and MR images, and presents a more advanced version of the gantry for future MRI/DOI-PET systems.

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