A Compact Detector Module Design Based on FlexToT ASICs for Time-of-Flight PET-MR
A Compact Detector Module Design Based on FlexToT ASICs for Time-of-Flight PET-MR
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DOI：
10.1109/trpms.2018.2870927
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发表时间：
2018-11-01
影响因子：
4.4
通讯作者：
Badia, David
中科院分区：
文献类型：
--
作者：
Manuel Cela, Jose;Freixas, Lluis;Badia, David
辐射检测技术的最新发展已经证明了同时进行磁共振成像（MRI）和飞行时间正电子发射断层扫描（TOF-PET）的可行性。在本文中，我们报告了一个紧凑的探测器模块设计的TOF-PET兼容MR的基础上FlexToT前端专用集成电路（ASIC），硅光电倍增管阵列的快速，低功耗前端读出。该模块包括放大器、光电传感器、ASIC、现场可编程门阵列以及用于与数据采集系统通信的USB或以太网协议。所提出的设计的小占地面积允许其用于现有MRI设备的正电子发射断层扫描（PET）插件，包括全身扫描仪和专用器官系统。的主要设计特点一起从一个概念验证原型的辐射检测和测量的射频发射光谱的电子元件的表征结果。正在进行的工作重点是实现和表征MRI内部的完整模块，以确保电磁兼容性，解决适当的屏蔽问题，以及使用我们的紧凑型探测器模块设计同时进行PET-MR采集的可能性。
Recent developments in radiation detection technology have demonstrated the feasibility of simultaneous magnetic resonance imaging (MRI) and time-of-flight positron emission tomography (TOF-PET). In this paper we report on a compact detector module design for TOF-PET compatible with MR based on the FlexToT front-end application specific integrated circuit (ASIC), a fast, low-power front-end readout for silicon photomultiplier arrays. The module comprises scintillators, photosensors, ASICs, field-programmable gate arrays, and USB or Ethernet protocols for communication with data acquisition systems. The small footprint of the proposed design allows its use on positron emission tomography (PET) inserts for existing MRI equipment, both whole-body scanners, and dedicated organ systems. The main design features are presented together with results from the characterization of a proof-of-concept prototype in terms of radiation detection and measurements of radio frequency emission spectra from the electronic components. Ongoing work is focused on implementing and characterizing a full module inside MRI for ensuring electromagnetic compatibility, addressing proper shielding, and the possibility of simultaneous PET-MR acquisition using our compact detector module design.