SCATTER COMPENSATION IN SPECT USING COMPLEX WAVELET WIENER DECONVOLUTION

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GHIASI H.R.; RAJABI H.; OLOUMI SH.

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Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF MEDICAL PHYSICS Year:2003 | Volume:1 | Issue:3 Page(s): 11-16

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Information Journal Paper

Title

SCATTER COMPENSATION IN SPECT USING COMPLEX WAVELET WIENER DECONVOLUTION

Author(s)

GHIASI H.R. | RAJABI H. | OLOUMI SH. | Issue Writer Certificate

Keywords

SPECT

SCATTER

FOURIER

WAVELET

DECONVOLUTION

Abstract

Introduction: Registration of SCATTERed photons along with the primary photons is a major cause of degrading image quality and quantitative accuracy in single photon emission tomography. To deal with the problem some techniques have been developed. DECONVOLUTION is the technique that considers the effect of SCATTER as convolution of the primary photons with a SCATTER function. Therefore the image of the non-scattered photons could be extracted from a mixed image of SCATTERed and non-scattered photons using a DECONVOLUTION technique. Methods and materials: In this study the complex WAVELET wiener DECONVOLUTION was used as a method of DECONVOLUTION. We used Monte Carlo generated phantoms to simulate the SCATTERed and SCATTER free Images. Results: This simulated study showed that the method improves the image quality and quantitative accuracy up to 1.5 dB in comparison to SCATTER reduction in the energy window of 20%. Conclusion: Complex WAVELET wiener DECONVOLUTION has the potential to be used as an efficient SCATTER compensation method. Other DECONVOLUTION methods such as iterative may also be used on the high pass sub-bands components of complex WAVELET decomposition as a complementary method.

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APA: Copy

GHIASI, H.R., RAJABI, H., & OLOUMI, SH.. (2003). SCATTER COMPENSATION IN SPECT USING COMPLEX WAVELET WIENER DECONVOLUTION. IRANIAN JOURNAL OF MEDICAL PHYSICS, 1(3), 11-16. SID. https://sid.ir/paper/542204/en

Vancouver: Copy

GHIASI H.R., RAJABI H., OLOUMI SH.. SCATTER COMPENSATION IN SPECT USING COMPLEX WAVELET WIENER DECONVOLUTION. IRANIAN JOURNAL OF MEDICAL PHYSICS[Internet]. 2003;1(3):11-16. Available from: https://sid.ir/paper/542204/en

IEEE: Copy

H.R. GHIASI, H. RAJABI, and SH. OLOUMI, “SCATTER COMPENSATION IN SPECT USING COMPLEX WAVELET WIENER DECONVOLUTION,” IRANIAN JOURNAL OF MEDICAL PHYSICS, vol. 1, no. 3, pp. 11–16, 2003, [Online]. Available: https://sid.ir/paper/542204/en

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