Fig. 7 从图7中,我们得出结论,确实可以找到用于TOF-PET和HEP中最高时序性能的低功耗前端解决方案,每通道最低功耗为17毫瓦,相比之下,TOFPET2 ASIC的每通道功耗为8毫瓦,而NINO为30毫瓦,然而,这两者的时序性能较差。这为进一步研究如何将这些放大器与已有的前端系统(例如PETsys的TOFPETASIC系列)结合起来以实现适用于...
作为国内唯一一家实现了PET晶体和PET探测器专用ASIC芯片等核心部件自主研发和生产的企业,联影医疗一直秉承“全部核心技术自主研发”的核心理念,纵向布局分子影像产业链上下游: 先解决掌握了PET探测器核心——LYSO晶体生产技术,解决了国产分子影像对进口晶体的依赖问题,其了独有的LYSO晶体生产配方,使晶体生长尺寸、良率、...
We present the experimental characterization of the TOFPET2, a readout and digitization ASIC for radiation detectors using Silicon Photomultipliers. The circuit is designed in CMOS 110 nm technology, has 64 independent channels and is optimized for time-of-flight measurement in PET or other ...
In this work we show pilot tests of PET detector blocks using the TOF-PET ASIC, coupled to SiPM detector arrays and different crystal configurations. We have characterized the main ASIC features running calibration processes to compensate the time dispersion among the different ASIC/SiPM paths as ...
TOFPET2 is the second-generation design of a high-performance multichannel picosecond timing readout electronics ASIC produced by PETsys Electronics SA, Portugal. Originally developed for time-of-flight positron emission tomography using silicon photomultipliers, in this work we describe an experimental ...
相比于专用的ASIC TDC芯片[15],基于FPGA内部专用延迟线结构的TDC技术以其易于集成、可重复利用,低成本、灵活易调试的优点逐步用于基于TOF技术的时间测量系统中,其结构如图6所示。经过CFD定时触发的光子信号到达FPGA管脚后,进入延迟链内,通过时钟完成粗计数时间的测量,通过编码完成细计数时间测测量,最终输出光子的到达时间...
The TOFPET2 ASIC was used with the default (factory) settings and events where two detectors fired in coincidence were filtered out. 3.1. Energy Resolution Examples of the measured spectra of 511 keV gamma are shown in Figure 4, where the one on the left corresponds to a crystal in Module...
instructions may be retrieved via the Internet/Intranet or a local area network; or so forth. Further, as used herein, the reconstruction processor30includes one or more of a microprocessor, a microcontroller, a graphic processing unit (GPU), an application-specific integrated circuit (ASIC), a...
We have developed a new MPPC based PET detector module improved the timing resolution using a TSV-MPPC array with LCT type and a new ASIC optimized to improve timing performance. This paper describes the construction and the performance of the new PET detector module. ...
Two dedicated ASIC chips have been developed for the project. The first PET images have been acquired with a test setup that consists solely of hardware and software developed within the collaboration and demonstrate that the data acquisition and reconstruction chain is operational. In this talk, ...