Designing and Fabrication of Switching High Voltage Power Supply for Nuclear Medicine Imaging Systems

Document Type : Original Article

Authors

1 Department of Medicine Engineering, Shahid Beheshti University, Tehran, Iran

2 Department of Power Engineering, Islamic Azad University, Ilam, Iran

Abstract

This paper describes design considerations of the High voltage (HV) module with low ripple and good stability in order to improve the efficiency of nuclear imaging systems consist of Single Photon Emission Computed Tomography (SPECT). In the design of the current HV module, push-pull topology is preferred, due to the fact; it has a better efficiency in comparison with other technologies. The module receives a positive continuous voltage about 5-8 V as input, and provides a programmable positive or negative continuous voltage from 800-2500 V as output for a total load of 200-KΩ. The ripple of the output voltage is 10 mV that it is measured by laboratory equipment’s and safe high voltage (SHV) probe. The measured output power in the designed module is 25 W. Experiment results show that minimum efficiency at full load is around 65%. The proposed HV module shows a good stability, low ripple (noise), fast rise time. So, it can be used in SPECT or gamma camera imaging system to provide the constant voltage for PMTS.

References

Nasiri,A., Babaei Altman M., (2016). Design and simulation of high voltage switching power supply for 2 MW magnetron operation. International Conference on Electrical Engineering, 10Pages.
Xi, W., Seidel, J., Kakareka, J. W., Pohida, T. J., Milenic, D. E., Proffitt, J., … Choyke, P. L. (2010). MONICA: a compact, portable dual gamma camera system for mouse whole-body imaging. Nuclear Medicine and Biology, 37(3), 245–253. doi:10.1016/j.nucmedbio.2009.12.003.
D’Antone, I., Lolli, M., & Zanotti, M. (2002). High voltage generator for the power supply of photomultipliers in the time of flight system of Alpha Magnetic Spectrometer-2 experiment. Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, 480(2–3), 555–564. doi:10.1016/s0168-9002(01)01222-0.
Vishwanathan, N., & Ramanarayanan, V. (2004). High voltage DC power supply topology for pulsed load applications with converter switching synchronized to load pulses. The Fifth International Conference on Power Electronics and Drive Systems, Singapore. doi:10.1109/peds.2003.1282930.
Flyckt, S. O. (2002). Photomultiplier tubes: principles and applications. Photonis.
Maher, K., & Contributors, W. (2006). Basic physics of nuclear medicine. Libronomia Company.
Rubino, L., & Marino, P. (2012). Unified supervised soft start-up and digital PI control for boost full-bridge converters. 2012 IEEE 21st International Symposium on Industrial Electronics (ISIE), Hangzhou, China. doi:10.1109/isie.2012.6237150.
Transactions on Machine Intelligence
Volume 2, Issue 1
December 2019
Pages 1-9

Files

History

  • Receive Date: 29 March 2019
  • Revise Date: 04 June 2019
  • Accept Date: 11 November 2019

Share

How to cite

Statistics