Table 1. Measurements of stent wire diameters on 2D axial images acquired using synchrotron radiation with beam energies ranging from 60 to 90 keV and 128-slice CT.
Scanning protocols | Stent graft A (mm) | Stent graft B (mm) | Stent graft C (mm) | Stent graft D (mm) | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Top | Body | Top | Body | Top | Body | Top | Body | ||||
60 keV | 0.48±0.02 | 0.36±0.01 | 0.41±0.01 | 0.42±0.04 | 0.55±0.02 | 0.46±0.02 | 0.53±0.02 | 0.48±0.02 | |||
70 keV | 0.37±0.01 | 0.29±0.01 | 0.38±0.01 | 0.33±0.01 | 0.46±0.02 | 0.44±0.02 | 0.44±0.02 | 0.31±0.02 | |||
80 keV | 0.32±0.02 | 0.28±0.02 | 0.36±0.02 | 0.33±0.01 | 0.43±0.01 | 0.44±0.01 | 0.45±0.01 | 0.32±0.01 | |||
90 keV | 0.30±0.01 | 0.25±0.01 | 0.34±0.01 | 0.25±0.00 | 0.44±0.02 | 0.40±0.01 | 0.44±0.01 | 0.27±0.04 | |||
128-slice CT* | 2.11±0.28/ 2.10±0.26 |
2.44±0.00/ 2.21±0.21 |
2.44±0.00/ 2.13±0.26 |
1.46±0.00/ 1.52±0.11 |
2.11±0.28/ 1.99±0.03 |
1.95±0.00/ 1.81±0.23 |
1.95±0.00/ 1.97±0.03 |
1.95±0.00/ 1.97±0.03 |
|||
Actual diameters | 0.34±0.01 | 0.34±0.01 | 0.39±0.01 | 0.32±0.01 | 0.48±0.01 | 0.48±0.01 | 0.48±0.01 | 0.33±0.01 |
*Refers to measurements of stent wires on 128-slice CT by 2 separate observers.