A New Phantom for Fast Determination of the Scatter Response of a Gamma Camera

F. J. Beckman; E. C. Frey; B. M.W. Tsui; C. Kamphuis; M. H. Viergever

doi:10.1109/23.322935

A New Phantom for Fast Determination of the Scatter Response of a Gamma Camera

F. J. Beckman, E. C. Frey, B. M.W. Tsui, C. Kamphuis, M. H. Viergever

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

A triangular phantom is proposed which enables the determination and parameterization of the depth dependent scatter response function (SRF) in uniformly attenuating objects for Single Photon Emission Computed Tomography (SPECT) by means of a single line source measurement. This approach replaces a tedious measurement series with line sources at various depths in slab phantoms. The method is evaluated for 99mTc. Monte Carlo simulations of SRFs and scatter-to-primary ratios (SPRs) of the triangular phantom are compared with those of slabs. It is found that both the SPRs and the shapes of the SRFs from the slab and triangular phantoms are in excellent agreement. In addition, the data obtained from a single measurement using the triangular phantom can be used in the parameterization of the slab phantom SRF and can be described by an analytical expression of the line source response function. This information can be combined with knowledge of the geometric detector response and the shape of the object to compute the full scatter response function in convex shaped objects. This method for estimating scatter can serve as the basis for accurate scatter compensation in SPECT.

Original language	English (US)
Pages (from-to)	1481-1488
Number of pages	8
Journal	IEEE Transactions on Nuclear Science
Volume	41
Issue number	4
DOIs	https://doi.org/10.1109/23.322935
State	Published - Aug 1994
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Nuclear Energy and Engineering
Electrical and Electronic Engineering

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title = "A New Phantom for Fast Determination of the Scatter Response of a Gamma Camera",

abstract = "A triangular phantom is proposed which enables the determination and parameterization of the depth dependent scatter response function (SRF) in uniformly attenuating objects for Single Photon Emission Computed Tomography (SPECT) by means of a single line source measurement. This approach replaces a tedious measurement series with line sources at various depths in slab phantoms. The method is evaluated for 99mTc. Monte Carlo simulations of SRFs and scatter-to-primary ratios (SPRs) of the triangular phantom are compared with those of slabs. It is found that both the SPRs and the shapes of the SRFs from the slab and triangular phantoms are in excellent agreement. In addition, the data obtained from a single measurement using the triangular phantom can be used in the parameterization of the slab phantom SRF and can be described by an analytical expression of the line source response function. This information can be combined with knowledge of the geometric detector response and the shape of the object to compute the full scatter response function in convex shaped objects. This method for estimating scatter can serve as the basis for accurate scatter compensation in SPECT.",

author = "Beckman, {F. J.} and Frey, {E. C.} and Tsui, {B. M.W.} and C. Kamphuis and Viergever, {M. H.}",

note = "Funding Information: 'This research was supported by the council for medical research of the Netherlands Organization for Scientific Research (N.W.O.) grant 900-537-059 and Public Health Service grant R01 CA39463. We thank W.A. van Beek and A. Hoekstra from the department of Nuclear Medicine for excellent technical support, and Dr P.P. van Rijk for having the opportunity to perform and the support of the gamma camera measuremen1 s.",

year = "1994",

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AU - Viergever, M. H.

N1 - Funding Information: 'This research was supported by the council for medical research of the Netherlands Organization for Scientific Research (N.W.O.) grant 900-537-059 and Public Health Service grant R01 CA39463. We thank W.A. van Beek and A. Hoekstra from the department of Nuclear Medicine for excellent technical support, and Dr P.P. van Rijk for having the opportunity to perform and the support of the gamma camera measuremen1 s.

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N2 - A triangular phantom is proposed which enables the determination and parameterization of the depth dependent scatter response function (SRF) in uniformly attenuating objects for Single Photon Emission Computed Tomography (SPECT) by means of a single line source measurement. This approach replaces a tedious measurement series with line sources at various depths in slab phantoms. The method is evaluated for 99mTc. Monte Carlo simulations of SRFs and scatter-to-primary ratios (SPRs) of the triangular phantom are compared with those of slabs. It is found that both the SPRs and the shapes of the SRFs from the slab and triangular phantoms are in excellent agreement. In addition, the data obtained from a single measurement using the triangular phantom can be used in the parameterization of the slab phantom SRF and can be described by an analytical expression of the line source response function. This information can be combined with knowledge of the geometric detector response and the shape of the object to compute the full scatter response function in convex shaped objects. This method for estimating scatter can serve as the basis for accurate scatter compensation in SPECT.

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A New Phantom for Fast Determination of the Scatter Response of a Gamma Camera

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