QRM-MicroCT-Barpattern (in air and resin)
The QRM Micro-CT Bar Pattern Chip Phantom is a perfect tool to assess inplane and axial spatial resolution of many Micro-CT systems in a direct visible manner.


QRM-MicroCT-Barpattern (3D rendering)



Micro-CT scans in air (left) with 5.5 μm voxel size and in resin (right) with 40 μm voxel size

The bar pattern chip offers a good alternative for indirect methods to evaluate spatial resolution in high res X-ray imaging modalities. The phantom comprises two silicon chips, one orientated inplane and one perpendicular (axial) orientated to it. The phantom is available with chips placed in a full resin cylinder or fixed on a slim support in a hollow (airfilled) cylinder (both machined with high mechanical accuracy).
The 5 x 5 mm² chip contains bar (trenches) and point pattern with diameters from 5 to 150 μm line/point thickness.
The depth of the structures varies between 80 and 120 μm.
The different structures on the chip are arranged in such a way over the chip, that spatial resolution can be evaluated in the center as well as in the periphery of the image/chip in a single measurement.



Bar / line pattern on the silicon chip




Total length .......................................... 40 mm
Weight ................................................ ~ 10 g
The resin cylinder, including two chips, is
available in other diameters above 8 mm upon
request.
Adapter/Extension cylinders are available as well.

QRM-MicroCT-Barpattern-Phantom (air)
Material of phantom ........................ air / plastic
Material of chip ..................................... silicon
Contrast ........................................ silicon / air
Wall thickness ..................................... 0.2 mm
Diameter ............................................. 20 mm
Total length .......................................... 40 mm
Weight .................................................. ~ 8 g
Chips are placed centrally in the phantom on a slim support.