CT Spiral Phantom

Price: Call JRT for Pricing

Item Number: 76-432

The CT Spiral Phantom is specifically designed to confirm the index and performance parameters of conventional (axial) and spiral (helical) CT scanners.

The accurate indexing capability and exceptional image quality of computed tomography (CT) scanners not only guarantee the object’s location, size and shape, but also improve the diagnosis accuracy. The index and performance parameters of CT scanners cannot be confirmed without objects of known specifications. The Model 76-432 CT Spiral Phantom provides specific details

necessary to confirm the integrity of both conventional and spiral scanning. What makes the phantom unique is that it allows the user to visually evaluate all test results in their image displays.

The phantom consists of five acrylic plates of different sizes, all affixed to a flat rectangular base. Specific hole patterns are drilled on each side of these plates. When imaging, the holes within the x-ray field will appear in the phantom images. By the appearance of the holes, both index and performance parameters can be confirmed qualitatively and quantitatively.

With the CT Spiral Phantom, the end user can:

Set up baseline standards for future reference
Verify scanner performance in the acceptance testing
Assist in routine equipment quality control testing
Evaluate vendor-supported imaging protocols
Customize image parameters for special applications

With the CT Spiral Phantom:

Quality of axial & spiral scanning can be assured
Accuracy of clinical diagnosis based on the object’s size, shape and location will be improved
Users can evaluate scanners objectively and independently of CT manufacturers
No film exposures and no radiation profile measurements are necessary
All test results can be evaluated visually by the users in their image displays
Scanner evaluation is more realistic; what you scan is what you see

Specifications

Index parameters:

Light localizer orientation

Light localizer and image slice congruence

Slice thickness accuracy

Gantry inclination

Couch index accuracy

Ruler (angle and distance) accuracy

Performance parameters:

Slice geometric uniformity

Image geometric distortion

Image slice overlap

Slice thickness change by pitch factor and image interpolation

Noise level of imaging protocols

PHYSICAL

Material: ...................... acrylic (PMMA)

Plate dimensions: ........ 10 x 10 cm, 15 x 15 cm, 20 x 20 cm, 25 x 25 cm

Phantom dimensions: .. 20 cm long, 25 cm wide, 25 cm high

Weight: ........................ 8.2 kg (18 lbs)