The Duplex Wire Type IQI is a Flexible DDA Duplex Wire Gauge that is capable of bending around curved surfaces, such as pipes, to achieve a precise evaluation of basic spatial resolution and unsharpness in digital X-ray imaging.
Note: The matching flexible IQI magnetic holder (RT-KT-11-00159) is purchased separately from the Flexible Duplex Wire Type IQI, ISO 19232-5, ASTM E2002 (RT-KT-11-00158)
The Flexible Duplex Wire Type IQI was compared to a normal D13 IQI. The findings are as follows:
The Duplex Wire Type IQI is used for basic spatial resolution evaluation of digital images in accordance with the:
Other applications include the:
Duplex IQI consists of the following wire pairs:
| Material for Wires | |
| D1 to D3 Material: | Tungsten (W) |
| D4 to D17 Material: | Platinum (Pt) |
| Wire Cast Material: | Transparent, resistance and dimensional stable plastic |
**Distance between wires of each wire pair equals exactly diameter of wires
|
DD Duplex Wire Pair Number |
d (μm) Wire Diameter and Spacing |
UT (μm) Corresponding Unsharpness |
SRb (μm) Corresponding Basic Spatial Resolution |
LP (1/mm) Corresponding Line Pair Value (LP per mm) |
| D 1 | 800 | 1600 | 800 | 0.63 |
| D 2 | 630 | 1260 | 630 | 0.79 |
| D 3 | 500 | 1000 | 500 | 1.00 |
| D 4 | 400 | 800 | 400 | 1.25 |
| D 5 | 320 | 640 | 320 | 1.56 |
| D 6 | 250 | 500 | 250 | 2.00 |
| D 7 | 200 | 400 | 200 | 2.50 |
| D 8 | 160 | 320 | 160 | 3.13 |
| D 9 | 130 | 260 | 130 | 3.85 |
| D 10 | 100 | 200 | 100 | 5.00 |
| D 11 | 80 | 160 | 80 | 6.25 |
| D 12 | 63 | 126 | 63 | 7.94 |
| D 13 | 50 | 100 | 50 | 10.00 |
| D 14 | 40 | 80 | 40 | 12.50 |
| D 15 | 32 | 63 | 32 | 15.90 |
| D 16 | 25 | 50 | 25 | 20.00 |
Note: The matching flexible IQI magnetic holder (RT-KT-11-00159) is purchased separately from the Flexible Duplex Wire Type IQI, ISO 19232-5, ASTM E2002