John Barrio
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View article: Detector Characterization of a High-Resolution Ring for PET Imaging of Mice Heads With Sub-200-ps TOF
Detector Characterization of a High-Resolution Ring for PET Imaging of Mice Heads With Sub-200-ps TOF Open
The signal-to-noise ratio in Positron Emission Tomography (PET) improves with precise timing resolution. PET systems enabling the capability of Time-of-Flight (ToF) are nowadays available. This study assesses various data configurations, c…
View article: Timing, Energy, and Spatial Characterization of Highly Sampled Monolithic PET Detectors With Different Thicknesses
Timing, Energy, and Spatial Characterization of Highly Sampled Monolithic PET Detectors With Different Thicknesses Open
The HyPET project proposes a hybrid dedicated TOF-PET for prostate imaging, with pixelated detector blocks in the front layer and monolithic blocks in the back layer. In this work, four detector configurations have been experimentally eval…
View article: A new brain dedicated PET scanner with 4D detector information
A new brain dedicated PET scanner with 4D detector information Open
In this article, we present the geometrical design and preliminary results of a high sensitivity organ-specific Positron Emission Tomography (PET) system dedicated to the study of the human brain. The system, called 4D-PET, will allow accu…
View article: Metascintillators: New Results for TOF-PET Applications
Metascintillators: New Results for TOF-PET Applications Open
We report on the progress on a first generation of realistic size metascintillators for time-of-flight PET. These heterostructures combine dense LYSO or BGO plates, interleaved with fast scintillator layers producing a bunch of prompt phot…
View article: Timing evaluation of a PET detector block based on semi‐monolithic LYSO crystals
Timing evaluation of a PET detector block based on semi‐monolithic LYSO crystals Open
Purpose Detectors for positron emission tomography (PET) typically use two types of scintillation crystals, pixelated or monolithic. A variant of these types of scintillators are the so‐called semi‐monolithic crystals. They consist of a mo…
View article: Proton range verification with MACACO II Compton camera enhanced by a neural network for event selection
Proton range verification with MACACO II Compton camera enhanced by a neural network for event selection Open
The applicability extent of hadron therapy for tumor treatment is currently limited by the lack of reliable online monitoring techniques. An active topic of investigation is the research of monitoring systems based on the detection of seco…
View article: Characterization of a High-Aspect Ratio Detector With Lateral Sides Readout for Compton PET
Characterization of a High-Aspect Ratio Detector With Lateral Sides Readout for Compton PET Open
This work was supported by the European Research Council through the European Union's Horizon 2020 Research and Innovation Program under Grant 695536.
View article: Image reconstruction for a multi-layer Compton telescope: an analytical model for three interaction events
Image reconstruction for a multi-layer Compton telescope: an analytical model for three interaction events Open
Compton Cameras are electronically collimated photon imagers suitable for sub-MeV to few MeV gamma-ray detection. Such features are desirable to enable in vivo range verification in hadron therapy, through the detection of secondary Prompt…
View article: Progress report on the MEDAMI 2019 and CTR research at the DMIL in i3M
Progress report on the MEDAMI 2019 and CTR research at the DMIL in i3M Open
[EN] This contribution reports on the recently held MEDAMI 2019 workshop in Valencia (15-17th May 2019). This workshop is about advanced molecular imaging and the main topic of this last edition was Imaging in Immunotherapy. Around 70 atte…
View article: Reduction Signals Method Preserving Spatial and Temporal Capabilities
Reduction Signals Method Preserving Spatial and Temporal Capabilities Open
In gamma ray imaging, a scintillation crystal is typically used to convert the gamma radiation into visible light. Photosensors are used to transform this light into measurable signals. Several types of photosensors are currently in use de…
View article: Characterization of TOF-PET Detectors Based on Monolithic Blocks and ASIC-Readout
Characterization of TOF-PET Detectors Based on Monolithic Blocks and ASIC-Readout Open
The aim of this work is to show the potential capabilities of monolithic crystals coupled to large SiPM arrays, to be considered as detector blocks for PET scanners enabling Time Of Flight (TOF) capabilities. Monolithic blocks allow one to…
View article: First Images of a Three-Layer Compton Telescope Prototype for Treatment Monitoring in Hadron Therapy
First Images of a Three-Layer Compton Telescope Prototype for Treatment Monitoring in Hadron Therapy Open
A Compton telescope for dose monitoring in hadron therapy is under development at IFIC. The system consists of three layers of LaBr3 crystals coupled to silicon photomultiplier arrays. (22)Na sources have been successfully imaged reconstru…