An alternative mathematical modeling of the scintillation camera and framework for performance analysis of gamma-ray positioning algorithms

Publish Year: 1397
نوع سند: مقاله ژورنالی
زبان: English
View: 324

This Paper With 9 Page And PDF Format Ready To Download

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

JR_IRJNM-26-2_007

تاریخ نمایه سازی: 19 بهمن 1398

Abstract:

Introduction: Substantive amount of work has been done in modeling and analyzing the scintillation camera system processes including positioning and image formation. The goal of this work is to develop a framework for analyzing performance of nonlinear positioning methods upon construction of a mathematical model of the system. In this study, the photodetector array counts are assumed to follow a multinomial distribution. Methods: We studied effects of several parameters on system performance, including photomultiplier tube (PMT) non-uniform response, gains, shape, size and positioning methods. This was done by constructing linearity and resolution maps, feeding the system a uniform grid of point sources showing the distorted output along with associated blurring intensity. The spatial resolution and linearity parameters are used to evaluate the performance of simulated scintillation camera. Results:The study findings revealed that the square PMT is the best option due to better fitting and quality especially near the edge of the detector and also ability to cover the rectangular crystal area with minimum numbers of PMTs. Also, the resolution resulted from CSE is 5% and 20% better than center of mass and modified center of mass respectively. Conclusion: We showed that the rectangular gamma camera accompanied by an array of square PMTs can introduce the optimum performance regarding linearity and resolution if the nonlinear method, called CSE, is used as positioning method. Further evaluation is needed to evaluate the performance of the proposed gamma camera in practice.

Authors

Behnoosh Teimourian Fard

Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran|Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran

Mojtaba Shamsaei Zafarghandi

Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran

Soheil Hosseini

Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran

Hamid Sabet

Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA

مراجع و منابع این Paper:

لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :
  • Anger HO. Scintillation camera. Rev Sci Instrum. 1958;29(1):27-33. ...
  • Anger HO. Scintillation camera with multichannel collimators. J Nucl Med. ...
  • Bushberg JT, Seibert JA, Leidholdt EM, Boone JM. Essential physics ...
  • Peterson TE, Furenlid LR. SPECT detectors: the Anger camera and ...
  • Svedberg JB. On the intrinsic resolution of a gamma camera ...
  • Svedberg JB. Computer simulation of the Anger gamma camera. Comput ...
  • Svedberg JB. Image quality of a gamma camera system. Phys ...
  • Baker RG, Scrimger JW. An investigation of the parameters in ...
  • Hunter WCJ: Modeling stochastic processes in gamma-ray imaging detectors and ...
  • Sain JD: Optical modeling, design optimization, and performance analysis of ...
  • Barrett HH, Hunter WC, Miller BW, Moore SK, Chen Y, ...
  • Fessler JA. Statistical image reconstruction methods. In: Fitzpatrick JM, Sonka ...
  • Jansen FP, Binnie DM. Signal processing in scintillation cameras for ...
  • Anger HO. Sensitivity, resolution, and linearity of the scintillation camera. ...
  • Tanaka E, Hiramoto T, Nohara N. Scintillation cameras based on ...
  • Hwang AB, Iwata K, Hasegawa BH. Simulation of depth of ...
  • Korevaar MAN: High-resolution EM-CCD scintillation gamma cameras. PhD thesis. Delf ...
  • Zeraatkara N, Sajedia S, Teimourian Farda B, Kaviania S, Akbarzadeh ...
  • نمایش کامل مراجع