Measurements with a PET Coincidence Setup Based on the PETA5 ASIC and FBK RGB-HD SiPMs

Schug, David; Gebhardt, Pierre; Weissler, Bjöern; Groß‐Weege, Nicolas; Dey, Thomas; Schulz, Volkmar

doi:10.1109/nssmic.2017.8532761

Cited by 7 publications

(6 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Directly after the analog detector block, applicationspecific integrated circuits (ASICs) are employed to trigger on the analog signal pulses created by SiPMs and PMTs (see Fig. 2) [18,72,91,96]. Alternatively, digital SiPMs are used which are combining the function of an analog SiPM and the ASIC [16,95].…”

Section: Detector Data Acquisition and Processingmentioning

confidence: 99%

Hybrid total-body pet scanners—current status and future perspectives

Nadig

Herrmann

Mottaghy

et al. 2021

Eur J Nucl Med Mol Imaging

Self Cite

View full text Add to dashboard Cite

Purpose Since the 1990s, PET has been successfully combined with MR or CT systems. In the past years, especially PET systems have seen a trend towards an enlarged axial field of view (FOV), up to a factor of ten. Methods Conducting a thorough literature research, we summarize the status quo of contemporary total-body (TB) PET/CT scanners and give an outlook on possible future developments. Results Currently, three human TB PET/CT systems have been developed: The PennPET Explorer, the uExplorer, and the Biograph Vision Quadra realize aFOVs between 1 and 2 m and show a tremendous increase in system sensitivity related to their longer gantries. Conclusion The increased system sensitivity paves the way for short-term, low-dose, and dynamic TB imaging as well as new examination methods in almost all areas of imaging.

show abstract

Section: Detector Data Acquisition and Processingmentioning

confidence: 99%

Hybrid total-body pet scanners—current status and future perspectives

Nadig

Herrmann

Mottaghy

et al. 2021

Eur J Nucl Med Mol Imaging

Self Cite

View full text Add to dashboard Cite

show abstract

“…For the application of SiPMs, ASICs are usually used to process the analog output of SiPMs to get the energy and timing information about the interaction of gamma rays with the scintillator. Many readout ASICs for SiPMs were also introduced in recent publications such as Triroc 1A (Weeroc) [117], Petiroc 2A (Weeroc) [126], PETsys TOFPET2 ASIC [127], and the Position Energy and Timing ASIC (PETA) series [128,129,130,131]. A more detailed summary of the applications of ASICs for SiPMs can be found in [132].…”

Section: Silicon Photomultipliers (Sipms)mentioning

confidence: 99%

Sensors for Positron Emission Tomography Applications

Jiang

Chalich

Deen

2019

Sensors

View full text Add to dashboard Cite

Positron emission tomography (PET) imaging is an essential tool in clinical applications for the diagnosis of diseases due to its ability to acquire functional images to help differentiate between metabolic and biological activities at the molecular level. One key limiting factor in the development of efficient and accurate PET systems is the sensor technology in the PET detector. There are generally four types of sensor technologies employed: photomultiplier tubes (PMTs), avalanche photodiodes (APDs), silicon photomultipliers (SiPMs), and cadmium zinc telluride (CZT) detectors. PMTs were widely used for PET applications in the early days due to their excellent performance metrics of high gain, low noise, and fast timing. However, the fragility and bulkiness of the PMT glass tubes, high operating voltage, and sensitivity to magnetic fields ultimately limit this technology for future cost-effective and multi-modal systems. As a result, solid-state photodetectors like the APD, SiPM, and CZT detectors, and their applications for PET systems, have attracted lots of research interest, especially owing to the continual advancements in the semiconductor fabrication process. In this review, we study and discuss the operating principles, key performance parameters, and PET applications for each type of sensor technology with an emphasis on SiPM and CZT detectors—the two most promising types of sensors for future PET systems. We also present the sensor technologies used in commercially available state-of-the-art PET systems. Finally, the strengths and weaknesses of these four types of sensors are compared and the research challenges of SiPM and CZT detectors are discussed and summarized.

show abstract

“…The energy of the respective event can then be measured either by signal integration featuring capacitors (qdc-method) or by measuring the time over a specified threshold (tot-method) [13,40,41]. The Weeroc series [36,37,42], the PETA series [27,[43][44][45][46][47][48] and the TOFPET2 series by PETsys Electronics S.A. [49,50] use such a qdc-method to measure the signal energy.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the PETsys TOFPET2 ASIC in multi-channel coincidence experiments

et al. 2021

Self Cite

View full text Add to dashboard Cite

Background Aiming to measure the difference in arrival times of two coincident γ-photons with an accuracy in the order of 200ps, time-of-flight positron emission tomography systems commonly employ silicon photomultipliers (SiPMs) and high-resolution digitization electronics, application specific integrated circuits (ASICs). This work evaluates the performance of the TOFPET2 ASIC, released by PETsys Electronics S.A. in 2017, dependent on its configuration parameters in multi-channel coincidence measurements. Methods SiPM arrays fabricated by different vendors (KETEK, SensL, Hamamatsu, Broadcom) were tested in combination with the ASIC. Scintillator arrays featuring different reflector designs and different configurations of the TOFPET2 ASIC software parameters were evaluated. The benchtop setup used is provided with the TOFPET2 ASIC evaluation kit by PETsys Electronics S.A. Results Compared to existing studies featuring the TOFPET2 ASIC, multi-channel performance results dependent on a larger set of ASIC configuration parameters were obtained that have not been reported to this extend so far. The ASIC shows promising CRTs down to 219.9 ps in combination with two Hamamatsu S14161-3050-HS-08 SiPM arrays (128 channels read out, energy resolution 13.08%) and 216.1 ps in combination with two Broadcom AFBR-S4N44P643S SiPM arrays (32 channels read out, energy resolution 9.46%). The length of the trigger delay of the dark count suppression scheme has an impact on the ASIC performance and can be configured to further improve the coincidence resolution time. The integrator gain configuration has been investigated and allows an absolute improvement of the energy resolution by up to 1% at the cost of the linearity of the energy spectrum. Conclusion Measuring up to the time-of-flight performance of state-of-the-art positron emission tomography (ToF-PET) systems while providing a uniform and stable readout for multiple channels at the same time, the TOFPET2 ASIC is treated as promising candidate for the integration in future ToF-PET systems.

show abstract

Measurements with a PET Coincidence Setup Based on the PETA5 ASIC and FBK RGB-HD SiPMs

Cited by 7 publications

References 31 publications

Hybrid total-body pet scanners—current status and future perspectives

Hybrid total-body pet scanners—current status and future perspectives

Sensors for Positron Emission Tomography Applications

Evaluation of the PETsys TOFPET2 ASIC in multi-channel coincidence experiments

Contact Info

Product

Resources

About