Meny

Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

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

Författare:
  • Helén Almquist
  • John Palmer
  • Michael Ljungberg
  • Per Wollmer
  • Sven-Erik Strand
  • Björn Jonson
Publiceringsår: 1990
Språk: Engelska
Sidor: 587-594
Publikation/Tidskrift/Serie: European Journal Of Nuclear Medicine
Volym: 16
Nummer: 8-10
Dokumenttyp: Artikel i tidskrift
Förlag: Springer

Abstract english

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

  • Radiology, Nuclear Medicine and Medical Imaging
  • Attenuation correction
  • Build-up
  • Quantitative SPECT
  • Transmission measurement

Other

Published
  • Clinical Physiology, Malmö
  • ISSN: 1432-105X
Michael Ljungberg
E-post: michael [dot] ljungberg [at] med [dot] lu [dot] se

Professor

Medicinsk strålningsfysik, Lund

+46 46 17 35 65

+46 70 817 31 15

SUS Lund Kampradhuset 12-11

Barngatan 2:1, Lund

32

Avdelningschef

Medicinsk strålningsfysik, Lund

32

Avdelningsföreståndare

Medicinsk strålningsfysik, Lund

32

Projektledare

Nuclear Medicine Physics

32