this is for holding javascript data
Alun Hughes edited results_table.tex
over 3 years ago
Commit id: 83c08b78f7f62b44217d0da9d15398ccb13e8c3e
deletions | additions
diff --git a/results_table.tex b/results_table.tex
index 504bfb8..0b131ae 100644
--- a/results_table.tex
+++ b/results_table.tex
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\[
\frac{\sum dP^2}{\sum dU^2} = (\rho c)^2 \frac{ \sum (dP_+^2 +2dP_+dP_- +dP_-)^2}{\sum (dP_-^2 - 2dP_+dP_- +dP_-)^2} = (\rho c)^2 \qquad \]
\[{if}
\[ \qquad \sum dP_+dP_- = 0\]
where the sums are taken over an integral number of cardiac periods. The last condition is equivalent to requiring that the forward and backward changes in pressure are not correlated over the cardiac period. In the coronary arteries this assumption is difficult to defend since both the forward and backward waves are generated by the contraction of the myocardium and so some correlation of the two might be expected. We therefore look for an alternative method for estimating the local wave speed from the simultaneously measured pressure and velocity.