AAPM CT Performance Phantom
Meets guidelines in AAPM Report #1 Performance Evaluation and Quality Assurance of CT Scanners
The CIRS Model 610 AAPM CT Performance Phantom offers the user a single test object that measures
ten distinct CT performance parameters. The phantom design is based on the guidelines presented in
Report #1 of the American Association of Physicists in Medicine Task Force on CT Scanner Phantoms.
The goals of report #1 were to “(1) define ‘performance’ of a CT scanner and (2) describe methods of
performance testing through utilization of particular phantoms.”
A CT number linearity insert, high contrast resolution insert and slice width insert are housed in an 8.5 “ diameter PMMA water tank with quick disconnect valves for ease of filling and draining between use. Also included is a 0.25” bone equivalent ring that can be fit over the inserts to evaluate the effects of beam hardening.
A contrast test object is adhered to the bottom of the tank that includes two rows of cavities from 1 to 0.125” diameter. The cavities can be filled with various solutions for contrast evaluation. An aluminum alignment insert is incorporated in the lid of the tank and can be swapped with a polystyrene TLD insert for dose measurements.
A user’s manual, holding cradle, filling tubes and other accessories are included.
Optional Items
- Low contrast test object insert.
- External whole-body resolution / noise ring.
- Foam lined carry case.
Measurement Capabilities
- Noise.
- Size Independence.
- Sensitivity / Detectablity.
- Radiation Dose.
- Mechanical Alignment.
- Spatial Uniformity.
- Beam Hardening.
- HU Linearity.
- Slice Thickness.
- Spatial Resolution and line spread function.