Abstract: In Single Photon Emission Computed Tomography (SPECT), Myocardial Perfusion is visualized in Short Axis (SA), Horizontal Long Axis (HLA), and Vertical Long Axis (VLA) slices of Left Ventricle (LV). Filtered Back Projection (FBP) is used as an image reconstruction algorithm in SPECT study. The choice of appropriate filter is a trade-off between image smoothness and sharpness of reconstructed images. The purpose of this study is to evaluate the effects of several filters including Butterworth, Generalized Hanning, Shepp Logan, Parzen filters with varying filter parameters (cut-off and order). Our finding is that Butterworth filter at cut-off 0.40 Nyquist, Parzen filter at cut-off 0.80 Nyquist, Hanning filter at 0.70 Nyquist and Shepp Logan filter at 0.50 Nyquist produce better image quality. For easier and more objective assessment of Myocardial Perfusion, Polar Plot display is introduced that represents tomographic slices in a single image (2D display) where information contained in the Short Axis slices of the Left Ventricle.
Keywords: SPECT, Myocardial Perfusion, HLA, VLA, FBP, Polar Plot display.
Title: Effects of Various Filter Parameters on the Myocardial Perfusion with Polar Plot Image
Author: Saiful Islam, Rifat Reza, Md.Mahmudul Hasan, Nayan Das Mishu, Khondoker Murad Hossain, Zahid Hasan Mahmood
International Journal of Engineering Research and Reviews
ISSN 2348-697X (Online)
Research Publish Journals
