Image Quality Indicator(IQI) plays an important role in the field of digital radiography due to its high accuracy, ease of operation, applicability, durability and compliance with international standards.
Image Quality Indicator for evaluation of Basic Spatial Resolution
Duplex IQI is useful for many X-ray applications, especially in digital X-ray.
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.
Duplex IQI Model:
D13 - D1 to D13 wires ,
D15 - D1 to D15 wires,
D17 HR4 - D4 to D17 wires
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.