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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.
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Journal of Cardiovascular Magnetic Resonance

ISSN: 1532-429X

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