Table 3 Mean values of left ventricular parameters, and the percent differences between MPS and MR imaging, for the subgroup analysis of 12 patients undergoing reconstruction using both iterative and filtered back-projection (FBP) reconstruction.
EDV Absolute value (ml) Versus MR imaging (%) | p-value | ESV Absolute value (ml) Versus MR imaging (%) | p-value | SV Absolute value (ml) Versus MR imaging (%) | p-value | EF Absolute value (%) Versus MR imaging (% of EF) | p-value | |
|---|---|---|---|---|---|---|---|---|
QGS | ||||||||
Iterative | 102 ± 43 ml -39 ± 9% | < 0.01 | 45 ± 27 ml -29 ± 19% | < 0.001 | 57 ± 17 ml -45 ± 6% | ns | 59 ± 9% -9 ± 11% of EF | < 0.01 |
FBP | 105 ± 43 ml -37 ± 9% | 48 ± 28 ml -23 ± 19% | 57 ± 17 ml -46 ± 7% | 56 ± 9% -13 ± 11% of EF | ||||
ECTb | ||||||||
Iterative | 101 ± 43 ml -39 ± 8% | < 0.05 | 34 ± 21 ml -46 ± 15% | < 0.05 | 67 ± 23 ml -36 ± 8% | ns | 69 ± 8% 7 ± 10% of EF | < 0.05 |
FBP | 110 ± 42 ml -34 ± 12% | 41 ± 22 ml -34 ± 19% | 69 ± 22 ml -34 ± 13% | 65 ± 9% 0 ± 12% of EF | ||||
MyoMetrix | ||||||||
Iterative | 108 ± 43 ml -35 ± 8% | < 0.001 | 48 ± 27 ml -23 ± 16% | < 0.001 | 60 ± 18 ml -43 ± 6% | ns | 57 ± 8% -11 ± 8% of EF | < 0.01 |
FBP | 116 ± 46 ml -30 ± 10% | 61 ± 35 ml -2 ± 25% | 56 ± 17 ml -45 ± 13% | 50 ± 12% -22 ± 17% of EF | ||||
Exini | ||||||||
Iterative | 123 ± 39 ml -25 ± 6% | ns | 45 ± 20 ml -24 ± 11% | ns | 77 ± 23 ml -25 ± 10% | ns | 63 ± 7% -2 ± 9% of EF | ns |
FBP | 126 ± 46 ml -23 ± 8% | 49 ± 23 ml -20 ± 17% | 78 ± 25 ml -25 ± 12% | 62 ± 8% -4 ± 11% of EF | ||||
MR imaging (range) | 162 ± 45 ml (110-264 ml) | 59 ± 21 ml (28-98 ml) | 104 ± 26 ml (66-166 ml) | 64 ± 5% (56-75%) |