Pro-CT 110
Modular CT Quality Assurance Phantom - Diagnomatic by Pro-Project
Pro-CT 110 combines multiple test modules in a cylindrical phantom for acceptance and constancy testing of computed tomography systems. It supports checks of CT numbers, image noise, uniformity, contrast, resolution and slice characteristics.
Pro-CT 110
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Positioning and Test Capabilities
The phantom can mount on a CT table holder or an adjustable stand for measurements on or off the table. Positioning marks and leveling aids help align the phantom before testing.
- Geometric distortion, alignment and linearity.
- CT number (HU), noise, uniformity and artifacts.
- Contrast-to-noise ratio (CNR), contrast and low-contrast resolution.
- Spatial resolution and modulation transfer function (MTF).
- Slice sensitivity profile (SSP), slice profile and beam width.
- Line spread function (LSF) and point spread function (PSF).
Technical Specifications
| Outside diameter | 110 mm |
|---|---|
| Overall length | 200 mm |
| Main body | Cylindrical container with a PMMA lid at one end and a permanently attached homogeneous module at the other |
| Lid hole array | 2 mm diameter holes, 10 mm deep, spaced at 10 mm intervals |
| Mounting | CT table holder or adjustable stand |
| Accessory | Carrying case |
Test Modules
| Homogeneous | PMMA module, 100 mm diameter × 20 mm thick. |
|---|---|
| Low contrast | PMMA module, 100 mm diameter × 20 mm thick. Rods are 10 mm high with diameters of 2, 3, 4, 6, 8, 10 and 12 mm. Contrast differences relative to the surrounding material are 0.3%, 0.6% and 1%. |
| Sensitometry / contrast | 100 mm diameter × 20 mm thick. The 15 mm diameter rod samples and PMMA body provide reference materials: PTFE, LDPE, POM-C, air, plastic water equivalent and PMMA. |
| Geometry | 100 mm diameter × 20 mm thick. Two aluminum wire ramps have a slope angle with a tangent of 0.5. |
| Spatial / high-contrast resolution | 100 mm diameter × 20 mm thick. Nineteen concentric high-contrast elements cover 4 to 22 line pairs/cm. |
| LSF / PSF | Two 0.2 mm diameter tungsten carbide beads for MTF and SSP calculations; a PTFE/PMMA interface for LSF; and a 0.025 mm stainless steel wire in air for PSF. |
| Water-filled | 100 mm diameter × 23 mm thick, with a screw opening for filling and draining. |
Standards and Documentation
Diagnomatic lists IEC 61223-3-5, IEC 61223-2-6, and AAPM or ACR guidelines for this phantom. The manual covers test procedures, assessment of results and recording of measurements. Technical specifications can be adapted to customer requirements.