Quantitative SPECT by attenuation correction of the projection set using transmission data: evaluation of a method

Helén Almquist; John Palmer; Michael Ljungberg; Per Wollmer; Sven-Erik Strand; Björn Jonson

doi:10.1007/BF00998154

Quantitative SPECT by attenuation correction of the projection set using transmission data: evaluation of a method

Helén Almquist, John Palmer, Michael Ljungberg, Per Wollmer, Sven-Erik Strand, Björn Jonson

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

Abstract

A method for measuring attenuation coefficients in single-photon emission tomography (SPECT) is described and evaluated, together with a method for attenuation correction using these measured attenuation coefficients. Build-up, caused by scattered photons, is corrected for by a simple substitution in the algorithms. Transmission studies are performed with a 99mTc- or 57Co flood source, and emission phantom studies with 99mTc line sources. The method is evaluated with variable but well-defined phantoms. The result is accurate attenuation coefficients for different densities, dimensions and geometries, and an accuracy of corrected emission activities of better than +/- 10% in most cases. The present limitations of the method for attenuation correction are discussed.

Original language	English
Pages (from-to)	587-594
Journal	European Journal Of Nuclear Medicine
Volume	16
Issue number	8-10
DOIs	https://doi.org/10.1007/BF00998154
Publication status	Published - 1990

Subject classification (UKÄ)

Radiology and Medical Imaging

Free keywords

Attenuation correction
Build-up
Quantitative SPECT
Transmission measurement

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10.1007/BF00998154

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@article{60c9a4cfe1f74342bf89150c6f33170e,

title = "Quantitative SPECT by attenuation correction of the projection set using transmission data: evaluation of a method",

abstract = "A method for measuring attenuation coefficients in single-photon emission tomography (SPECT) is described and evaluated, together with a method for attenuation correction using these measured attenuation coefficients. Build-up, caused by scattered photons, is corrected for by a simple substitution in the algorithms. Transmission studies are performed with a 99mTc- or 57Co flood source, and emission phantom studies with 99mTc line sources. The method is evaluated with variable but well-defined phantoms. The result is accurate attenuation coefficients for different densities, dimensions and geometries, and an accuracy of corrected emission activities of better than +/- 10% in most cases. The present limitations of the method for attenuation correction are discussed.",

keywords = "Attenuation correction, Build-up, Quantitative SPECT, Transmission measurement",

author = "Hel{\'e}n Almquist and John Palmer and Michael Ljungberg and Per Wollmer and Sven-Erik Strand and Bj{\"o}rn Jonson",

year = "1990",

doi = "10.1007/BF00998154",

language = "English",

volume = "16",

pages = "587--594",

journal = "European Journal Of Nuclear Medicine",

issn = "1432-105X",

publisher = "Springer",

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TY - JOUR

T1 - Quantitative SPECT by attenuation correction of the projection set using transmission data: evaluation of a method

AU - Almquist, Helén

AU - Palmer, John

AU - Ljungberg, Michael

AU - Wollmer, Per

AU - Strand, Sven-Erik

AU - Jonson, Björn

PY - 1990

Y1 - 1990

N2 - A method for measuring attenuation coefficients in single-photon emission tomography (SPECT) is described and evaluated, together with a method for attenuation correction using these measured attenuation coefficients. Build-up, caused by scattered photons, is corrected for by a simple substitution in the algorithms. Transmission studies are performed with a 99mTc- or 57Co flood source, and emission phantom studies with 99mTc line sources. The method is evaluated with variable but well-defined phantoms. The result is accurate attenuation coefficients for different densities, dimensions and geometries, and an accuracy of corrected emission activities of better than +/- 10% in most cases. The present limitations of the method for attenuation correction are discussed.

AB - A method for measuring attenuation coefficients in single-photon emission tomography (SPECT) is described and evaluated, together with a method for attenuation correction using these measured attenuation coefficients. Build-up, caused by scattered photons, is corrected for by a simple substitution in the algorithms. Transmission studies are performed with a 99mTc- or 57Co flood source, and emission phantom studies with 99mTc line sources. The method is evaluated with variable but well-defined phantoms. The result is accurate attenuation coefficients for different densities, dimensions and geometries, and an accuracy of corrected emission activities of better than +/- 10% in most cases. The present limitations of the method for attenuation correction are discussed.

KW - Attenuation correction

KW - Build-up

KW - Quantitative SPECT

KW - Transmission measurement

U2 - 10.1007/BF00998154

DO - 10.1007/BF00998154

M3 - Article

SN - 1432-105X

VL - 16

SP - 587

EP - 594

JO - European Journal Of Nuclear Medicine

JF - European Journal Of Nuclear Medicine

IS - 8-10

ER -

Quantitative SPECT by attenuation correction of the projection set using transmission data: evaluation of a method

Abstract

Subject classification (UKÄ)

Free keywords

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