JNM
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

The Journal of Nuclear Medicine Vol. 25 No. 11 1234-1240
© 1984 by Society of Nuclear Medicine
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by King, M. A.
Right arrow Articles by Penney, B. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by King, M. A.
Right arrow Articles by Penney, B. C.

Two-Dimensional Filtering of SPECT Images using the Metz and Wiener Filters

Michael A. King, Ronald B. Schwinger, Paul W. Doherty and Bill C. Penney

The University of Massachusetts Medical Center, Worcester, Massachusetts

Correspondence: For reprints contact: Michael A. King, PhD, Dept. of Nuclear Medicine, The University of Massachusetts Med. Ctr., Worcester, MA 01605.

ABSTRACT

Two-dimensional filtering, both before and after reconstruction, has been applied to the processing of single photon emission computerized tomographic (SPECT) images. The filters investigated were the count-dependent Metz filter and Wiener filter, both of which automatically adapt to the image being processed. Using a SPECT phantom, with images reconstructed with these filters rather than the ramp, we observed a statistically significant increase (p <0.05) in the image contrast for solid Plexiglas spheres, and significant decrease (p <0.05) in the percent fractional standard deviation of counts in a region of uniform activity. The adaptability of these filters is demonstrated by a comparison of SPECT acquisitions of the phantom at two different count levels. An example of their application to clinical studies is presented. We conclude that two-dimensional digital image restoration with these techniques can produce a significant increase in SPECT image quality, with a small cost in processing time when these techniques are implemented on an array processor.




This article has been cited by other articles:


Home page
 Br. J. Radiol.Home page
T Vakhtangandze, D O Hall, F V Zananiri, and M R Rees
The effect of Butterworth and Metz reconstruction filters on volume and ejection fraction calculations with 99Tcm gated myocardial SPECT
Br. J. Radiol., August 1, 2005; 78(932): 733 - 736.
[Abstract] [Full Text] [PDF]

Home page
 JNMHome page
S. Sankaran, E. C. Frey, K. L. Gilland, and B. M.W. Tsui
Optimum Compensation Method and Filter Cutoff Frequency in Myocardial SPECT: A Human Observer Study
J. Nucl. Med., March 1, 2002; 43(3): 432 - 438.
[Abstract] [Full Text] [PDF]

Home page
 JNMHome page
G. Germano
Technical Aspects of Myocardial SPECT Imaging
J. Nucl. Med., October 1, 2001; 42(10): 1499 - 1507.
[Abstract] [Full Text] [PDF]

Home page
 J. Nucl. Med. Technol.Home page
M. W. Groch and W. D. Erwin
SPECT in the Year 2000: Basic Principles
J. Nucl. Med. Technol., December 1, 2000; 28(4): 233 - 244.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurol. Neurosurg. PsychiatryHome page
M. Grossman, F. Payer, K. Onishi, T. White-Devine, D. Morrison, M. D'Esposito, K. Robinson, and A. Alavi
Constraints on the cerebral basis for semantic processing from neuroimaging studies of Alzheimer's disease
J. Neurol. Neurosurg. Psychiatry, August 1, 1997; 63(2): 152 - 158.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
JOURNAL OF NUCLEAR MEDICINE TECHNOLOGY THE JOURNAL OF NUCLEAR MEDICINE
Copyright © 1984 by the Society of Nuclear Medicine.