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Table 1 Physiological cardiac parameters.

From: Cardiac MR Elastography: Comparison with left ventricular pressure measurement

Animal # Weight
[kg]
Heart rate
[bpm]
LV ejection fraction [%] LV end diastolic volume [ml] pperipheral
[mm Hg]
Δpinvasive
[mm Hg]
U(systole)
[mm]
U(diastole)/U(systole) IVC
[ms]
IVR
[ms]
1 53 77 51 41 66 60 0.237 (0.003) 2.03 (0.08) 169 (26.5) 176 (19.0)
2 23 61 54 35 69 65 0.136 (0.002) 2.22 (0.10) 79.5 (8.5) 214 (23.0)
3 25 93 55 70 75 73 0.104 (0.002) 2.79 (0.15) 59.5 (14.5) 134 (9.0)
  1. The wave amplitudes U(systole) and U(diastole) were determined for ζ = 0.9 and averaged over the ten lowest and ten highest data points of U(t), respectively.
  2. Delays of isovolumetric contraction (IVC) and isovolumetric relaxation (IVR) were ten times manually selected in a range of 30 to 70% of the maximum of U(t) and the change of left ventricular diameter. Standard deviations are given in brackets.