Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Transmural absorbance changes between acquisitions during systole and diastole are dominated by changes in pathlength. A: transmural light acquired from the epicardial surface was greatest during diastole (blue line) and was lowest during systole (red line). B: when transmural absorbance spectra acquired during systole were compared with spectra acquired during diastole, there was no spectral structure in the shape of the difference between the spectra (green line). n = 11.
