Correction of UFCT regional myocardial time density curve artifactual heterogeneities

Author

Wolfkiel, Christopher J.

Author_Institution

Illinois Univ., Chicago, IL, USA

fYear

1994

fDate

25-28 Sep 1994

Firstpage

737

Lastpage

739

Abstract

Regional myocardial time density curves produced by intravenous contrast medium are shown to have significant artifacts associated with contrast medium concentrations within the left ventricular cavity. Phantom measurements show this relationship to be between -2 and 10% compared to the expected 5-20% myocardial signal. A correction-smoothing algorithm that assumes that the initial left ventricular enhancement can return the regional myocardial curve to baseline and applied throughout all images reduces the heterogeneity of regional time density curves. The corrected curves were analyzed for flow using a model that accounts for intramyocardial blood volume and tissue transit time

Keywords

cardiology; computerised tomography; medical image processing; muscle; corrected curves; correction-smoothing algorithm; intramyocardial blood volume; intravenous contrast medium; left ventricular cavity; left ventricular enhancement; medical diagnostic imaging; phantom measurements; regional myocardial time density curves; tissue transit time; ultrafast computed tomography; Animals; Blood; Cardiology; Filters; Fluid flow measurement; Imaging phantoms; In vivo; Myocardium; Smoothing methods; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 1994

Conference_Location

Bethesda, MD

Print_ISBN

0-8186-6570-X

Type

conf

DOI

10.1109/CIC.1994.470080

Filename

470080