Evaluation of different respiratory gating schemes for cardiac SPECT.

ABSTRACT:

Background

Respiratory gating reduces motion blurring in cardiac SPECT. Here we aim to evaluate the performance of three respiratory gating strategies using a population of digital phantoms with known truth and clinical data.

Methods

We analytically simulated 60 projections for 10 XCAT phantoms with ^99mTc-sestamibi distributions using three gating schemes: equal amplitude gating (AG), equal count gating (CG), and equal time gating (TG). Clinical list-mode data for 10 patients who underwent ^99mTc-sestamibi scans were also processed using the 3 gating schemes. Reconstructed images in each gate were registered to a reference gate, averaged and reoriented to generate the polar plots. For simulations, image noise, relative difference (RD) of averaged count f

SUBMITTER: Zhang D 

PROVIDER: S-EPMC11409049 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature