Duplex Wire Type IQI
Article No.: 11 001XX
Total Image Unsharpness Gage
according to ISO 19232-5, ASTM E2002
Evaluation of basic spatial resolution
and unsharpness of digital X-ray images
Image Quality Indicator for evaluation of Basic Spatial Resolution
The Duplex IQI is useful for many X-ray applications, especially in digital X-ray. Designed for evaluating total image unsharpness of X-ray films now it is mainly used for basic spatial resolution evaluation of digital images according to EN 13068 (Radioscopy), ISO 16371or ASTM E2445 (CR – Computed Radiography with Imaging Plates), ASTM E2446 and ASTM E2597 (characterization of CR systems and DDAs) and ASTM E2737 (Long term stability of DDAs). But also for digital radiology of welds ISO 17636-2 ()
Image valuation with Duplex Wire Type IQI
In radiography the wire pair with largest diameter d has to be identified, which cannot be separated visually. The radiographic film may be magnified up to 4X. In digital radiology the separation between wires (Dip) is evaluated. The wire pair with largest d, showing Dip less than 20 percent of the wire pair contrast, identifies total image unsharpness (U = 2d) and basic spatial resolution (SRb = d) of digital image.
Duplex IQI consists of following wire pairs:
D13 – D1 to D13 , D15 – D1 to D15 , D17 HR4 – D4 to D17
Material for wires D1 to D3 is tungsten (W), for wires D4 to D17 is platinum (Pt)
Distance between wires of each wire pair equals exactly diameter of wires
Wires are casted in a transparent, resistant and dimensional stable plastic
Standard and serial number are indelible casted and shown on each image
| DD | d (µm) | UT (µm) | SRb (µm) | LP (1/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 | 2.000 |
| 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 |
| D17 | 20 | 40 | 20 | 25.00 |
| DD | Duplex Wire Pair Number |
| d | Wire Diameter and Spacing |
| UT | Corresponding Unsharpness |
| SRb | Corresponding Basic Spatial Resolution |
| LP | Corresponding Line Pair Value (LP per mm) |
Duplex Wire Type IQI in wooden etui
Test Report according to ASTM E 2002, ISO 19232-5
Declaration of Conformity according to ISO/IEC 17050-1
Types:
Duplex Wire Type IQI
Duplex Wire Type IQI
Duplex Wire Type IQI
Types:
D13
D15 HiRes
D17 HR4 UHiRes
Article No.:
11 00155
11 00160
11 00165
leaflet German:
leaflet English: Duplex Wire Type IQI