Article Sidebar

PDF
Published: 2024-02-20
Abstract Views: 53
Views PDF: 43
DOI: https://doi.org/10.53747/nst.v12i4.375
Issue
Vol. 12 No. 4 (2022)
Section
Articles
How to Cite
Ha, B., Dang Nguyen The, D., Nguyen Tuan, H., Vu Thu, T., & Lai Viet, H. (2024). Research and manufacture of the mini gamma camera using multi-anode photo multiplier tube (Ma-PMT). Nuclear Science and Technology, 12(4), 29-37. https://doi.org/10.53747/nst.v12i4.375

Research and manufacture of the mini gamma camera using multi-anode photo multiplier tube (Ma-PMT)

Bui Ha1, Duy.D.N.T, H, Trang.V.T, Hai.L.V
1 s:42:"Hanoi University of Science and Technology";

Main Article Content

Abstract

Gamma camera is an imaging technique that captures gamma radiation emitting from the radiation sources. In this paper, the authors built a Mini-Gamma camera system using a micro photomultiplier tube (µPMT) H12700, signal processing circuit, and control software as self-designed products. The Gamma camera system includes four parts: collimator, scintillator NaI(Tl), µPMT, processing, and controller boards. The electronic system had preamplifiers used to convert negative signals from the µPMT to positive signals, integrators used to sharpen the signal from the preamplifier, and an amplifier circuit to amplify the signal from the preamplifier, a position detection circuit to detect the location of radiation interaction in the crystal. All circuits in the Mini-Gamma camera system are optimized to achieve the best projection image quality. In this paper, the lab-built Mini-Gamma Camera has an energy resolution of 45% at 60 keV gamma rays, the affected field of the camera is 42×48.5 mm2, and the spatial resolution of the image is around 1 mm.

Article Details

Keywords

Ma-PMT, Gamma Camera, Compton Camera, nuclear imaging technique, H12700

References

[1]. Jerrold T. Bushberg, J. Anthony Seibert, Edwin M. Leidholdt Jr., John M. Boon, The Essential Physics of Medical Imaging, 675-680, 2002.
[2]. Cardona-Arboniés J, Mucientes-Rasilla J, Moreno Elola-Olaso A, Salazar-Andía G, Prieto-Soriano A, Chicharo de Freitas J, Contribution of the portable gamma camera to detect the sentinel node in breast cancer during surgery, Revista Española de Medicina Nuclear e Imagen Molecular;31:130–4, 2012.
[3]. Ferretti A, Chondrogiannis S, Marcolongo A, Rubello D., Phantom study of a new hand-held c-imaging probe for radio-guided surgery, Nuclear Medicine Communications; 34:86–90, 2013.
[4]. Bugby SL, Lees JE, Bhatia BS, Perkins AC., Characterization of a small high-resolution field of view portable gamma camera, Physica Medica; 30:331–9, 2014.
[5]. Tsuchimochi M, Hayama K., Intraoperative gamma cameras for radio-guided surgery: technical characteristics, performance parameters, and clinical applications, Physica Medica; 29:126–38, 2013.
[6]. Heller S, Zanzonico P., Nuclear probes and intraoperative gamma cameras, Seminars in Nuclear Medicine; 41:166–81, 2011.
[7]. Sanchez F, Benlloch J, Escat B, Pavón N, Porras E, Kadi-Hanifi D, Design and tests of a portable mini gamma camera, Medical Physics; 31:1384–97, 2004.
[8]. Fernández M, Benlloch J, Cerdá J, Escat B, Giménez E, Giménez M, A flat-panel-based mini gamma camera for lymph nodes studies, Nuclear Instruments and Methods in Physics, Research Section A; 527:92–6, 2004.
[9]. Trotta C, Massari R, Palermo N, Scopinaro F, Soluri A., New high spatial resolution portable camera in medical imaging, Nuclear Instruments and Methods in Physics, Research Section A; vol 577; pp604–10, 2007.

[10]. Knoll P, Mirzaei S, Schwenkenbecher K, Barthel T., Performance evaluation of a solid-state detector based handheld gamma camera system, Frontiers in Biomedical Technologies;1:61–7, 2014.
[11]. Lawson R.S., Jones D., Hogg P., Seeram E. (eds), Practical SPECT/CT in Nuclear Medicine, Springer, London, 2013, p47 https://doi.org/10.1007/978-1-4471-4703-9_.
[12]. Hammamatsu, h12700_h14220_tpmh1379e, 2019.