Estimating the NEMA characteristics of the J-PET tomograph using the GATE package

Abstract

The novel whole-body PET system based on plastic scintillators is developed by the {J-PET} Collaboration. It consists of plastic scintillator strips arranged axially in the form of a cylinder, allowing the cost-effective construction of the total-body PET. In order to determine properties of the scanner prototype and optimize its geometry, advanced computer simulations using the GATE software were performed. The spatial resolution, the sensitivity, the scatter fraction and the noise equivalent count rate were estimated according to the NEMA norm as a function of the length of the tomograph, number of the detection layers, diameter of the tomographic chamber and for various types of the applied readout. For the single-layer geometry with the diameter of 85 cm, strip length of 100 cm, cross-section of 4 mm x 20 mm and silicon photomultipliers with the additional layer of wavelength shifter as the readout, the spatial resolution (FWHM) in the centre of the scanner is equal to 3 mm (radial, tangential) and 6 mm (axial). For the analogous double-layer geometry with the same readout, diameter and scintillator length, with the strip cross-section of 7 mm x 20 mm, the NECR peak of 300 kcps was reached at 40 kBq/cc activity concentration, the scatter fraction is estimated to about 35% and the sensitivity at the centre amounts to 14.9 cps/kBq. Sensitivity profiles were also determined.

References in corpus (15)

• GATE : a simulation toolkit for PET and SPECT
• Test of a single module of the J-PET scanner based on plastic scintillators
• Time resolution of the plastic scintillator strips with matrix photomultiplier readout for J-PET tomograph
• J-PET: a new technology for the whole-body PET imaging
• A novel method for the line-of-response and time-of-flight reconstruction in TOF-PET detectors based on a library of synchronized model signals
• Evaluation of Single-Chip, Real-Time Tomographic Data Processing on FPGA - SoC Devices
• Measurement of gamma quantum interaction point in plastic scintillator with WLS strips
• Multichannel FPGA based MVT system for high precision time (20~ps~RMS) and charge measurement
• Novel method for hit-position reconstruction using voltage signals in plastic scintillators and its application to Positron Emission Tomography
• Compressive Sensing of Signals Generated in Plastic Scintillators in a Novel J-PET Instrument
• Sampling FEE and Trigger-less DAQ for the J-PET Scanner
• Analysis framework for the J-PET scanner
• Scatter fraction of the J-PET tomography scanner
• Multiple scattering and accidental coincidences in the J-PET detector simulated using GATE package
• Three-dimensional image reconstruction in J-PET using Filtered Back Projection method

Cited by in corpus (13)

• Feasibility study of the positronium imaging with the J-PET tomograph
• Simulating NEMA characteristics of the modular total-body J-PET scanner -- an economic total-body PET from plastic scintillators
• Feasibility studies of the polarization of photons beyond the optical wavelength regime with the J-PET detector
• The J-PET detector -- a tool for precision studies of ortho-positronium decays
• Toward inertial sensing with a monochromatic $2^{3}S$ positronium beam
• J-PET Framework: Software platform for PET tomography data reconstruction and analysis
• Multi-photon time-of-flight MLEM application for the positronium imaging in J-PET
• Optimisation of the event-based TOF filtered back-projection for online imaging in total-body J-PET
• Synchronisation and calibration of the 24-modules J-PET prototype with 300~mm axial field of view
• Commissioning of the J-PET detector in view of the positron annihilation lifetime spectroscopy
• Potential for biomedical applications of Positron Annihilation Lifetime Spectroscopy (PALS)
• Status and Prospects of Discrete Symmetries Tests in Positronium Decays with the J-PET Detector
• Studies Of The Polarization Of Gamma Photons Originating From The Decay of Positronium Atoms