Multispectral photon-counting for medical imaging and beam characterization

作     者：Brucken, E. Bharthuar, S. Emzir, M. Golovleva, M. Gadda, A. Hostettler, R. Harkonen, J. Kirschenmann, S. Litichevskyi, V. Luukka, P. Martikainen, L. Naaranoja, T. Ninca, I. Ott, J. Petrow, H. Purisha, Z. Siiskonen, T. Sarkka, S. Tikkanen, J. Tuuva, T. Winkler, A. 

作者机构：Univ Helsinki Helsinki Inst Phys Gustaf Hallstromin Katu 2 FI-00014 Helsinki Finland Lappeenranta Lahti Univ Technol LUT Yliopistonkatu 34 FI-53850 Lappeenranta Finland Aalto Univ Otakaari 24 FI-00076 Espoo Finland Rudjer Boskovic Inst Zagreb 1000 Croatia Radiat & Nucl Safety Author STUK Laippatie 4 FI-00880 Helsinki Finland Detect Technol Oyj Otakaari 5A FI-02150 Espoo Finland 

出 版 物：《JOURNAL OF INSTRUMENTATION》 

年 卷 期：2020年第15卷第2期

核心收录：

学科分类：08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程] 

基　　金：Academy of Finland University of Helsinki Helsinki Institute of Physics Academy of Finland (AKA) Funding Source: Academy of Finland (AKA) 

主　　题：Gamma telescopes Medical-image reconstruction methods and algorithms, computer-aided diagnosis Neutron detectors (cold, thermal, fast neutrons) X-ray detectors 

摘      要：We present the current status of our project of developing a photon counting detector for medical imaging. An example motivation lays in producing a monitoring and dosimetry device for boron neutron capture therapy, currently not commercially available. Our approach combines in-house developed detectors based on cadmium telluride or thick silicon with readout chip technology developed for particle physics experiments at CERN. Here we describe the manufacturing process of our sensors as well as the processing steps for the assembly of first prototypes. The prototypes use currently the PSI46digV2.1-r readout chip. The accompanying readout electronics chain that was used for first measurements will also be discussed. Finally we present an advanced algorithm developed by us for image reconstruction using such photon counting detectors with focus on boron neutron capture therapy. This work is conducted within a consortium of Finnish research groups from Helsinki Institute of Physics, Aalto University, Lappeenranta-Lahti University of Technology LUT and Radiation and Nuclear Safety Authority (STUK) under the RADDESS program of Academy of Finland.