Table 2

Variable

Abn. segm (N)

Mean

SEM

95% CI of Mean

Extent %

Stress

Severity Score

Flash 3D
               LAD
               LCx
               RCA
FBP
               LAD
               LCx
               RCA

17
17
17

12
13
9

31.94
29.52
41.88

25.08
25.61
25.00

23.58
23.65
27.70

22.44
23.90
23.74

5.71
5.73
6.71

6.47
6.62
7.91

19.81 to 44.06
17.36 to 41.68
27.63 to 56.12

10.82 to 39.34
11.17 to 40.06
6.74 to 43.25

Flash 3D
               LAD
               LCx
               RCA
FBP
               LAD
               LCx
               RCA

17
17
17

12
13
9

3.77
3.80
3.75

3.49
3.73
3.52

0.89
1.11
0.56

1.19
1.36
0.92

0.24
0.29
0.15

0.31
0.39
0.30

3.23 to 4.31
3.15 to 4.44
3.43 to 4.08

2.80 to 4.18
2.86 to 4.60
2.80 to 4.23

Extent %

Rest

Severity score

Flash 3D
               LAD
               LCx
               RCA
FBP
               LAD
               LCx
               RCA

19
18
19

11
14
11

27.47
22.77
26.84

26.54
19.21
24.09

21.78
17.57
21.91

22.29
18.71
19.36

4.99
4.14
5.02

6.72
5.02
5.83

16.97 to 37.97
14.03 to 31.51
16.27 to 37.40

11.56 to 41.52
8.40 to 30.02
11.07 to 37.10

Flash 3D
               LAD
               LCx
               RCA
FBP
               LAD
               LCx
               RCA

19
18
19

11
14
11

3.39
3.33
3.75

3.56
3.46
3.52

1.29
1.34
0.56

1.11
1.08
0.92

0.33
0.34
0.15

0.32
0.29
0.30

2.67 to 4.10
2.59 to 4.07
3.43 to 4.08

2.85 to 4.27
2.83 to 4.09
2.80 to 4.23

Abn. Segm (N) – number of affected segments (in a bull-eye representation). CI - confidence interval; FBP - filtered back projection; Flash 3D-Siemens proprietary 3D iterative reconstruction algorithm; SD - standard deviation; SEM - standard error of the mean.

Table 2: Comparative description of FBP and Flash 3D derived defect extent (number of segments and in %) and severity.