Phantom
|
Peak Distance Factor Metric
|
Approximate coils
|
Peak DFM/2.80 ratio
|
---|
Pitch 5(2π)
|
20.95
|
8
|
7.48
|
Pitch 10(2π)
|
10.76
|
4
|
3.84
|
Pitch 20(2π)
|
5.45
|
2
|
1.95
|
Pitch 40(2π)
|
2.80
|
1
|
1.00
|
- The peak distance factor metric tortuosity scores are lower with increasing pitch of the three-dimensional helix phantoms.