High resolution work loops as a means for evaluating regional cardiac function

Author

Chiang, F.P. ; Azeloglu, E.U. ; Saltman, A.E. ; Krukenkamp, I.B. ; Gaudette, G.R.

Author_Institution

Dept. of Mech. Eng., SUNY Stony Brook, NY, USA

Volume

1

fYear

2003

fDate

17-21 Sept. 2003

Firstpage

97

Abstract

Regional ischemia in the heart leads to regions of dysfunction. It is therefore important to determine myocardial function in several small areas of the heart. By using computer aided speckle interferometry, we are able to determine changes in regional area. The integral of the left ventricular pressure with respect to the change in regional area has been termed regional stroke work. In isolated rabbit hearts, we have developed a system to determine regional stroke work in regions approximately 1.2 mm², over a region of interest that is approximately 27.5 mm². This technique will now allow for the detection of regional changes in the heart with higher spatial resolution than was previously available.

Keywords

biomechanics; blood pressure measurement; cardiology; computer aided speckle interferometry; high resolution work loops; isolated rabbit hearts; left ventricular pressure; myocardial function; regional cardiac function; regional ischemia; regional stroke work; Animals; Biomedical measurements; Heart; Interferometry; Ischemic pain; Myocardium; Rabbits; Spatial resolution; Speckle; Surgery;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-7789-3

Type

conf

DOI

10.1109/IEMBS.2003.1279519

Filename

1279519