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Qrm-coNebeam cbct module, qrm-conebeam cone ct module, used to test the imaging performance of conical tablet ct scanners
Provides different low contrasts and spatial resolution bar patterns
Allow mtf measurements in different directions
Multifunctional body model to compare different ct and cbt scanner solutions
Cone-beam phantom allows the examination of the entire range of image mass parameters that can be measured on dvd x-ray devices with 3d imaging options, c arm or blood vessels x-ray models, and ct scanners with tablet detectors。
Three different low contrasts provide a contrast between 3 and 200 hus to take into account large variations in low contrast capabilities。
Space-resolution bar patterns and additional edges inserted into a system that identifies different directions mtf. The image contrast and the hu ratio partially quantify the machine hu ratio and the bone contrast achieved using different settings. By comparing the results measured by cone-beam phantom, different products and technology solutions can be compared。
In addition to the image mass of the conical beam scanner, a dose can be measured using ct dosimetry phantom. The ctdi method can be applied to all types of conical beam scanners。
Qrm-coQrm-conebeam cone ct-module parameters:
Diameter: 160 mm
Length: 143 mm
Cross-section height: 20 mm
Qrm-coQrm-conebeam cone ct module:
Contrast resolution:
Section a: comparative steps: -60, -90, -120, -200 hu
Part b: comparative steps: 20, 25, 30, 45 hu
Part c: comparative steps: 3, 5, 10, 15 hu
The diameter of the low contrast plugin: 2, 4, 8, 16, 32 mm
Part d - space resolution: 14 circle aligning line patterns: 4 to 30 lp/cm
Part e - noise and zoom: 3 blades d = 24 mm: bones eq (400 mg ha / ccm water eq (ctwater) air
Part f - mtf wedges: two vertically aligned wedges: ptfe 20 x 16 x 80 mm
Part g - plain: switchboard: selectable transducer
Qrm cone beam model is the best way to assess the imaging performance of the computer image processing system -
Fault scanning (ct), cone-beam scanning and ct scanner。
The design of the qrm conebeam model covers the full image quality that can be achieved by this imaging device。
Mirage offers the possibility of assessing images
Quality indicators meet national and international standards (e. G. Din iec 61223-3-5 or din iec 61223-2-6). The following image quality indicators are available:
• ct parity
• accuracy of ct values
• image noise
• comparison of noise
• space resolution (esf, mtf, wedge)
• space resolution (visual, bar chart)
• geometry within plane
• low contrast function
Conebeam modeling is essential to fully quantify the imaging performance of the volume x-ray scanner and to compare different systems or technical solutions。
In addition to the overall image mass of the cone scanner, the ct dosage model should be used to measure the assistive dose. The ct dosage index (ctdi) method can be applied to all types of cone scanners。