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) and castings (EN 12681-2).
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 | 2.00 |
| 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 |
| D 17 | 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) |
Types:
Article No.:
Duplex Wire Type IQI – D13
11 00155
Duplex Wire Type IQI – D15 HiRes
11 00160
Duplex Wire Type IQI – D17 HR4 UHiRes
11 00165
Wire Identifier Brackets
for easy wire pair identification and 5° alignment
for Duplex IQI – D13
11 00156
for Duplex IQI – D15
11 00161
for Duplex IQI – D17
11 00166
You can find accessories on the leaflet
leaflet German: DUPLEX IQI
leaflet English: DUPLEX IQI