Triroc, a versatile 64-channel SiPM readout ASIC for time-of-flight PET

Ahmad, S.; Taille, C. De La; Fleury, J.; Seguin-Moreau, N.; Raux, L.; Callier, S.; Martin-Chassard, Gisèle; Dulucq, F.; Thienpont, D.

doi:10.1109/nssmic.2016.8069882

Cited by 12 publications

(12 citation statements)

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“…Compared to other ASICs the TOFPET2 ASIC features a similar or even lower power consumption. For other models, higher values are often reported, e.g., 10 mW/channel for the Triroc ASIC, 25 mW/channel for the STIC3 ASIC, and less than 40 mW/channel for the PETA4 ASIC [18], [20], [21]. The prior version of the TOFPET2 ASIC also featured a slightly higher power consumption (8 mW/channel to 11 mW/channel) [30].…”

Section: Discussionmentioning

confidence: 99%

“…For SiPM readout in PET applications, the precise digitization of event timestamps and energies is typically achieved by employing application-specific integrated circuits (ASICs). These ASICs typically support 8 to 64 data channels [12]- [20]. The time binning of the employed time-to-digital converters (TDC) can range from 20 ps-50 ps [18], [19], [21], [22].…”

Section: Introductionmentioning

confidence: 99%

“…The time binning of the employed time-to-digital converters (TDC) can range from 20 ps-50 ps [18], [19], [21], [22]. The energy of the signal can either be measured by a time-over-threshold method (tot-mode) [13], [23] or via signal integration (qdcmode), e.g., as applied for the Weeroc, PETA and TOFPET ASIC series [12], [15], [18]- [20], [24]- [32] The measurement can be linear for integrating charges up to 2000 p.e.-3000 p.e. (photo-electrons) [17], [20], [32].…”

Section: Introductionmentioning

confidence: 99%

“…The energy of the signal can either be measured by a time-over-threshold method (tot-mode) [13], [23] or via signal integration (qdcmode), e.g., as applied for the Weeroc, PETA and TOFPET ASIC series [12], [15], [18]- [20], [24]- [32] The measurement can be linear for integrating charges up to 2000 p.e.-3000 p.e. (photo-electrons) [17], [20], [32]. When integrating TOF-PET and magnetic resonance imaging (MRI) in one hybrid system, one faces the need of a compact infrastructure designed for only restricted space inside the MR bore as well as problems of dissipation and mutual interference.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the Power Consumption of the PETsys TOFPET2 ASIC

Nadig

Weissler

Radermacher

et al. 2020

IEEE Trans. Radiat. Plasma Med. Sci.

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In state-of-the-art positron emission (PET) tomography systems, application-specific integrated circuits (ASICs) are commonly used to precisely digitize the signals of analog silicon photo-multipliers (SiPMs). However, when operating PET electronics in a magnetic resonance (MR) system, one faces the challenge of mutual interference of these imaging techniques. To prevent signal deterioration along long analog signal lines, PET electronics with a low power consumption digitizing the signals close to the SiPMs are preferred. In this study, we evaluate the power consumption of the TOFPET2 ASIC. Its power consumption ranges from 3.6 mW/channel to 7.2 mW/channel as a function of the input stage impedance and discriminator noise settings. We present an analytical model allowing to compute the power consumption of a given ASIC configuration. The configured input stage impedance and discriminator noise have an impact on the coincidence resolution time, energy resolution, and dark count rate. Since TOFPET2 ASICs delivers state-ofthe art performance with a power consumption similar or even lower than other ASICs typically used for PET applications, it is a favorable candidate to digitize the signals of SiPMs in future simultaneous PET/MR systems.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation of the Power Consumption of the PETsys TOFPET2 ASIC

Nadig

Weissler

Radermacher

et al. 2020

IEEE Trans. Radiat. Plasma Med. Sci.

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“…If we take the coincidence time resolution (CTR FWHM ) of a full detection system as a figure of merit to compare ASICs in terms of the timing performance (to be compared with similar scintillator and photodetector conditions), we can observe a continuous improvement trend. Considering LYSO crystals and 3 × 3 mm 2 pixels, the TRIROC ASIC (2016 [ 40 ]) achieved 423 ps, TOFPET (2016) 294 ps and STiC (2018 [ 41 ]) 214 ps. For smaller pixels (2 × 2 mm 2 ) FlexToT v2 reached 123 ps and NINO (2017) 93 ps [ 42 ].…”

Section: Multi-modal Medical Imagingmentioning

confidence: 99%

Challenges for Microelectronics in Non-Invasive Medical Diagnostics

Carminati

Fiorini

2020

Sensors

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Microelectronics is emerging, sometimes with changing fortunes, as a key enabling technology in diagnostics. This paper reviews some recent results and technical challenges which still need to be addressed in terms of the design of CMOS analog application specific integrated circuits (ASICs) and their integration in the surrounding systems, in order to consolidate this technological paradigm. Open issues are discussed from two, apparently distant but complementary, points of view: micro-analytical devices, combining microfluidics with affinity bio-sensing, and gamma cameras for simultaneous multi-modal imaging, namely scintigraphy and magnetic resonance imaging (MRI). The role of integrated circuits is central in both application domains. In portable analytical platforms, ASICs offer miniaturization and tackle the noise/power dissipation trade-off. The integration of CMOS chips with microfluidics poses multiple open technological issues. In multi-modal imaging, now that the compatibility of the acquisition chains (thousands of Silicon Photo-Multipliers channels) of gamma detectors with Tesla-level magnetic fields has been demonstrated, other development directions, enabled by microelectronics, can be envisioned in particular for single-photon emission tomography (SPECT): a faster and simplified operation, for instance, to allow transportable applications (bed-side) and hardware pre-processing that reduces the number of output signals and the image reconstruction time.

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Study experimental time resolution limits of recent ASICs at Weeroc with different SiPMs and scintillators

Saleem,

Ahmad,

Cizel

et al. 2023

J. Inst.

Self Cite

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Medical applications, such as Positron Emission Tomography (PET), and space applications, such as Light Detection and Ranging (LIDAR), are in need of highly specialized ASICs. Weeroc, in collaboration with different partners, is highly involved in developing a new generation of front-end ASICs. In the context of a joined LIDAR project among Weeroc, CNES, and Airbus, Weeroc is working on the development of Liroc, an ASIC for space LIDAR application. Weeroc is also working on advancing ASICs for medical applications with Radioroc under development and intended to be used for PET applications. This study experimentally evaluates the time resolution limits of these ASICs in different configurations, with some of the most recent silicon photomultiplier (SiPM) technologies available on the market, coupled to different scintillation crystals. The best single-photon time resolution (SPTR) was achieved using FBK NUV-HD SiPMs with an FWHM of 90 ps with Liroc and 73 ps with Radioroc. Furthermore, the coincidence time resolution (CTR) of Radioroc was studied with different crystal sizes. Using a large LYSO:Ce,Ca crystal of (3 × 3 × 20 mm3) with Broadcom Near UltraViolet-Metal in Trench (NUV-MT) yields a CTR of 127 ps (FWHM). The best CTR of Radioroc was determined to 83 ps (FWHM) with Broadcom NUV-MT SiPMs coupled to LYSO:Ce,Ca (2 × 2 × 3 mm3)) from Taiwan Applied Crystal (TAC).

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Triroc, a versatile 64-channel SiPM readout ASIC for time-of-flight PET

Cited by 12 publications

References 1 publication

Investigation of the Power Consumption of the PETsys TOFPET2 ASIC

Investigation of the Power Consumption of the PETsys TOFPET2 ASIC

Challenges for Microelectronics in Non-Invasive Medical Diagnostics

Study experimental time resolution limits of recent ASICs at Weeroc with different SiPMs and scintillators

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