Compton scatter compensation using the triple-energy window method for single- and dual-isotope SPECT.

Authors:
  • NMN Motomura
    N Motomura
  • AKA Kubo
    A Kubo
  • SHS Hashimoto
    S Hashimoto
Google Scholar
  • 1 December 1993
    • journal article
    • Vol. 34  (12) , 2216-21
    • PMID:8254414
Abstract
The spatial distribution of scattered photons varies depending on many factors such as object size and source distribution. We propose a triple-energy window (TEW) scatter compensation method for determining position-dependent Compton scatter. We estimated the count of primary photons at each pixel in the acquired image using the 24% main window centered at the photo peak energy and 3 keV scatter rejection windows on both sides of the main window. We conducted a physical evaluation of this method using phantoms and also applied this method to patients in a clinical trial. The TEW method performed Compton scatter compensation with good accuracy.