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The Influence of Phantom Size, Shape, and Density, and Collimator Selection on the Dual Photopeak Scatter Correction Method

Författare:
  • George J Hademenos
  • Michael A King
  • Michael Ljungberg
Publiceringsår: 1994
Språk: Engelska
Sidor: 364-368
Publikation/Tidskrift/Serie: IEEE Transactions on Nuclear Science
Volym: 41
Nummer: 1-2
Dokumenttyp: Artikel i tidskrift
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.

Abstract english

Results from a Monte Carlo investigation are presented for the application of the dual photopeak window (DPW) scatter correction method to phantom geometries of varying shapes, sizes, and densities as well as to several collimators. A Monte Carlo program was used to simulate a Tc-99m point source at locations of 0.5 cm from the phantom surface, at the center, 0.5 cm from the bottom, and 4/5 the distance lateral from the center for each case of variation. DPW was then used to correct for scatter using a regression relation determined for a 30.5 cm×23.0 cm water-filled elliptical tub phantom using an ultrahigh resolution collimator. The application of DPW in all cases accounted for an approximate twelve-fold reduction in scatter fraction with an excellent agreement between the true scatter and scatter estimate distributions both at the tails and under the peak of the point spread functions.

Keywords

  • Radiology, Nuclear Medicine and Medical Imaging

Other

Published
  • ISSN: 0018-9499
Michael Ljungberg
E-post: michael [dot] ljungberg [at] med [dot] lu [dot] se

Professor

Medicinsk strålningsfysik, Lund

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+46 70 817 31 15

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Avdelningschef

Medicinsk strålningsfysik, Lund

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Avdelningsföreståndare

Medicinsk strålningsfysik, Lund

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Projektledare

Nuclear Medicine Physics

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