Micro-CT-BarPattern-NANO
The Micro-CT Bar Pattern NANO Chip Phantom is a perfect tool to assess in-plane and axial spatial resolution of a high resolution Micro-CT system in a direct visible manner.
As a further development of our popular MicroCT-BarPattern-Phantom we now present the BarPattern-NANO!
The easy and convenient to use phantom provides two silicon chips, perpendicularly aligned and placed on a solid plastic support.
Both 3 x 3 mm² chips exhibit several line and point pattern representing lines and points of 1 to 10 µm width.
In addition a slented edge (L) and a Siemens-star (actinomorphic star) are also placed on the chip.
The different structures on the chip are arranged in such a way over the chip, that spatial resolution can be determined in the center as well as in the peripheral regions of the image/chip with a single measurement.
Line- and Pointpattern on the chip: 3 x 3 mm²
The depth of the structures varies within 5 and 15 µm.
Specifications
|
| Base material: |
solid plastic (chips placed on support in air -> 0.3 mm wall thickness) |
| Diameter Phantom: |
5.2 mm |
| Height: |
19 mm |
| measures of silicon chip: |
3 x 3 x 0.66 mm |
| structures on the chip (resolution): |
1 to 10 µm, resp. 500 to 50 LP/mm |
| Material of chip: |
silicon |
| Contrast of pattern |
silicon / air |
Micro-CT-BarPattern
The Micro-CT Bar Pattern Chip Phantom is a perfect tool to assess in-plane and axial spatial resolution of any Micro-CT system in a direct visible manner.
The QRM MicroCT Bar Pattern Phantom was designed to provide a tool for direct visible measurement of spatial resolution in Micro–CT. The chip offers a good alternative for indirect methods to evaluate spatial resolution in high res X-ray imaging modalities. The phantom comprises two chips, one orientated in-plane and one in perpendicular (axial) orientation. The chips are placed on a slim support in air or in a full resin cylinder with highmechanical accuracy respectively.
The 5 x 5 mm² chip contains bar- and point- pattern with diameters ranging 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. The cylinder, including two chips, is available in 20 mm diameter phantom (in air) or 8 mm diameter phantom (in resin). Other diameters upon request.
The phantom is available with bar pattern chips placed in resin or in air!
Specifications
|
| Base material: |
resin or
cylinder with air (0.3 mm wall) |
| Diameter (in air): |
20 mm and upon request |
| Diameter (in resin): |
8 mm and upon request |
| Length: |
40 mm |
| Weight: |
30 - 70 g |
| Material of chip: |
silicon |
| Contrast |
silicon / resin
silicon / air |
Micro-CT Wire Phantom
The Micro-CT Wire Phantom is a perfect tool to assess in-plane spatial resolution of any Micro-CT system. Different diameters of wire and materials are available.
 |
 |
The QRM MicroCT Wire Phantom is based on a cylinder containing two wires in air or solid material aligned parallel to the phantom axis of rotation. One of the wires is slightly off center, the second one away from the center in order to allow estimating image quality in the periphery.
Point Spread Function (PSF) and Modulation Transfer Function (MTF) can so easily be investigated.
Different wire diameters are available as well as different materials and positions of the wires inside the phantom.
Please specify the material the wires should placed in (air or solid plastics). In both cases the contrast will be high enough for evaluation.
Standard phantoms are scaled down from the diameter of an average human trunk (32 cm) to that of a fat mouse or lean rat (32 mm). Other dimensions as well as inserts with substances other than specified here can be produced upon request.
Specifications
|
| Base material: |
sturdy resin walls (in air) or whole solid resin |
| Wall thickness: |
0.2- 0.5 mm |
| Material of wire: |
typically tungsten, other materials upon request |
| Available diameters of wires: |
3 µm, 10 µm, 25 µm |
Dimensions for mouse-size phantom: |
| Diameter: |
32 mm |
| Other diameters: |
20 mm and upon request |
| Inner length: |
40 mm |
| Total length: |
58 mm |
| Weight: |
7.5 g (air)
35 g (solid) |
Micro-CT Multi Disk Phantom (after Defrise)
The MicroCT Multi Disk Phantom is designed to test cone beam artifacts from Micro-CT scanners caused by reconstruction algorithms.
The MicroCT Multi Disk phantom (after Defrise) has long been well established as the test object for demonstrating artefacts occurred by all kind of approximate reconstruction algorithms.
The QRM-MicroCT-MultiDisk phantom after Defrise consists of eight high-density circular disks equally spaced at 3 mm apart parallel to the axis of rotation. These disks are separated by low-density disks showing up as darker material. The phantom is completed on either side by 10 mm of PMMA.
Standard phantoms are scaled down from the diameter of an average human trunk (32 cm) to that of a fat mouse or lean rat (32 mm). Other dimensions as well as inserts with substances other than specified here can be produced upon request.
Specifications
|
| Phantom size diameter: |
20 mm |
| Phantom size length: |
48.5 mm |
| Phantom weight: |
19 g |
| High-density disk: |
diameter: 20 mm |
| High-density disk: |
thickness: 1 +/- 0.05 |
| High-density disk: |
density: 1.38 g/cm3 |
| Low-density disk: |
diameter: 20 mm |
| Low-density disk: |
thickness/mm: 3 +/- 0.05 |
| Low-density disk: |
density: 1.18 g/cm3 |
| Flanging outer zylinders: |
material: polymethylmethacrylate
thickness: 10 mm |
Radiation Instruments
Dosimeters film
