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

Wire Identifier Bracket for Duplex-IQI D13+
Wire Identifier Bracket for Duplex-IQI D15+
Wire Identifier Bracket for Duplex-IQI D17+

leaflet German:
leaflet English: Duplex  Wire Type IQI