E. M. Stokely, R. W. Parkey, S. E. Lewis, F. J. Bonte

Research output: Chapter in Book/Report/Conference proceedingChapter


The authors' nuclear medicine laborato has recently demonstrated the use of **9**9**mTc-stannous pyrophosphate for imaging acute myocardial infarction. This paper presents the results of several methods for processing the **9**9**mTc-PYP concentrations using a laboratory computer system. Images from patient studies were found to fall into one of three categories: a) no processing needed, b) spatial filtering needed to remove rib structures, or c) background subtraction and contrast enhancement needed to improve infarct definition. A one-dimensional, recursive, band-reject digital filter was applied to the digitized picture elements on a column-by-column basis to remove the rib structure from the image. Homomorphic filtering in the logarithmic domain was found to be most useful. Simple background subtraction and contrast enhancement were sometimes able to reveal localized concentrations of pyrophosphate indicative of infraction, while this concentration was not evident on the unprocessed scintigram.

Original languageEnglish (US)
Title of host publicationUnknown Host Publication Title
Place of PublicationCalif
PublisherSan Diego Biomed Symp (v 13)
Number of pages5
StatePublished - 1974
EventSan Diego Biomed Symp, Proc - San Diego, CA, USA
Duration: Feb 6 1974Feb 8 1974


OtherSan Diego Biomed Symp, Proc
CitySan Diego, CA, USA

ASJC Scopus subject areas

  • Engineering(all)


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