The Duplex IQI is used in many X-ray applications. It is especially made for digital X-ray applications in order to evaluate image unsharpness (film and digital images) and basic spatial resolution in digital images according to EN 13068 (Radioscopy), EN 14784 and ISO 13671 (CR - Computed Radiography with imaging plates), ISO 17636-2 (digital radiography of welds - flat panel detectors) or ASTM E 2597 (characterization of digital detector arrays). A new ISO is in the works, describing the possibility of using the Duplex IQI for the determination of focal spot sizes on X-ray tubes.
Duplex IQI - D13 (11 00155)
Standard Resolution Version
Duplex IQI - D15 (11 00160)
High Resolution Version
The D15 has same wire pairs as the D13 + additional wires with diameters of:
Dimensions of the D15 are 78.5 x 15 x 4 mm compared to 70 x 15 x 4 mm (standard duplex) and distance between D13 and D14 is higher to avoid mix-ups.
Duplex IQI - D17 (11 00165)
Ultra High Resolution Version
14 wire pairs 4D ... 17D in platinum (Pt) with Corresponding Basic Spatial Resolution (SRb value) down to 0.020 mm.