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Table 2 Longitudinal, radial and circumferential time to peak (TTP) values in the basal, mid and apical short-axis slices of 10 healthy volunteers, together with inter-study reproducibility

From: Efficient and reproducible high resolution spiral myocardial phase velocity mapping of the entire cardiac cycle

  TTP (ms) Interstudy Reproducibility (ms) Mean ± SD signed differences TTP % systole/diastole Interstudy Reproducibility (%) Mean ± SD signed differences TTP (ms based on average length of systole and diastole) Interstudy reproducibility, Mean ± SD signed differences
BASE       
SL 58.3 ± 11.8 0 ± 8.1 17.3 ± 1.9 −0.5 ± 1.8 60.6 ± 6.7 −1.8 ± 6.3
DL 458.0 ± 33.3 18.7 ± 41.1 18.0 ± 4.0 0.7 ± 4.3 467 ± 26 4.6 ± 28.0
ASL 881.1 ± 101.7 57 ± 90.8 79.2 ± 5.3 4.2 ± 8.1 864.8 ± 34.5 27.3 ± 52.7
SR 117.5 ± 24.5 4.6 ± 14.4 34.4 ± 4.5 0.7 ± 5.6 120.4 ± 15.8 2.5 ± 19.6
DR 446.5 ± 34.5 13.9 ± 30.9 16.3 ± 2.8 0.2 ± 4.5 456.0 ± 18.2 1.3 ± 29.3
ASR 864.6 ± 106.4 38.7 ± 91.4 78.0 ± 7.1 1.4 ± 9.1 857.0 ± 46.2 9.1 ± 59.2
C1 42.3 ± 11.2 0 ± 9.8 12.7 ± 2.6 0.1 ± 3.5 44.5 ± 9.1 0.4 ± 12.3
C2 133.8 ± 15.3 −0.2 ± 14.8 40.2 ± 5.7 0.9 ± 5.4 140.7 ± 20.0 3.2 ± 18.9
C3 391.2 ± 48.9 7.2 ± 35.9 9.3 ± 2.5 0.6 ± 4.1 410.5 ± 16.3 3.9 ± 26.7
MID       
SL 55.6 ± 10.3 −1.1 ± 6.6 17.1 ± 1.8 −1.29 ± 2.19 59.9 ± 6.3 −4.5 ± 7.7
DL 461.2 ± 39.7 20.6 ± 30.4 20.5 ± 3.7 −0.54 ± 3.42 483.3 ± 24.1 −3.5 ± 22.2
ASL 858.5 ± 137.5 26.6 ± 103.9 79.9 ± 4.7 −0.17 ± 3.94 869.4 ± 30.6 −1.1 ± 25.6
SR 108.5 ± 18.0 −7.1 ± 24.1 35.3 ± 4.6 −3.93 ± 7.83 123.6 ± 16.1 −13.8 ± 27.4
DR 457.7 ± 68.5 26.3 ± 35.7 21.1 ± 3.1 0.20 ± 3.28 487.2 ± 20.2 1.3 ± 21.3
ASR 865.7 ± 129.3 25.4 ± 88.2 80.9 ± 4.6 −0.46 ± 1.67 875.9 ± 29.9 3.0 ± 10.9
C1 46.8 ± 12.6 2.4 ± 10.2 13.9 ± 2.8 0.26 ± 2.71 48.7 ± 9.8 0.9 ± 9.5
C2 135.0 ± 19.5 −2.8 ± 13.6 42.1 ± 6.1 −2.72 ± 2.17 147.4 ± 21.4 −9.5 ± 7.6
APEX       
SL 50.7 ± 9.73 −1.6 ± 11.5 14.7 ± 2.2 −1.0 ± 2.4 51.5 ± 7.7 −3.5 ± 8.4
DL 454.3 ± 28.6 14.6 ± 24.8 15.3 ± 6.3 0.3 ± 3.8 449.5 ± 41.0 2.0 ± 24.7
ASL 876.2 ± 105.2* 37.6 ± 83.7** 78.3 ± 4.7* 3.1 ± 5.1 ** 859.0 ± 30.6 20.2 ± 33.2
SR 110.2 ± 20.6 −1.6 ± 19.8 32.8 ± 6.3 −2.2 ± 5.3 114.8 ± 22.1 −7.7 ± 18.6
DR 484.8 ± 43.6 8.0 ± 15.6 20.4 ± 4.7 −0.6 ± 4.4 482.6 ± 30.6 −3.9 ± 28.6
ASR 884.1 ± 106.1 14.4 ± 76.6 81.6 ± .4.4 0.8 ± 6.1 880.4 ± 28.6 5.2 ± 39.7
C1 49.4 ± 11.2 2.2 ± 10.8 13.8 ± 1.8 −0.1 ± 3.6 48.3 ± 6.3 −0.4 ± 12.6
C2 138.3 ± 21.0 −3.2 ± 12.6 40.5 ± 6.4 3.5 ± 6.3 141.8 ± 41.6 12.3 ± 22.1
C3 364.3 ± 38.0 10.7 ± 14.6 1.4 ± 3.3 −0.4 ± 5.6 359.1 ± 21.5 −2.6 ± 36.4
  1. TTP values are shown as absolute times from the R wave (in ms) as well as percentages of systole or diastole as appropriate. For the latter, TTPs are also expressed in ms after normalising to a fixed systolic (350 ms) and diastolic length (650 ms). All values shown are mean ± standard deviation.
  2. *1 excluded, **2 excluded since AS peak not clearly seen.