CT Spiral Phantom - 76-432

CT Spiral Phantom - 76-432

CT Spiral Phantom - 76-432 - CT Image

Typical Spiral CT image of the CT
Spiral Phantom shows non-uniform
slice geometry, based on the hole
appearance on each side of the plate

The Model 76-432 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 Model 76-432 CT Spiral Phantom is specifically designed to confirm the index and performance parameters of conventional (axial) and spiral (helical) CT scanners.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.

The CT Spiral Phantom is designed to be used by: CT Manufacturers, Research Laboratories, Regulatory Agencies, and End Users.

Designed by Jung T. Ho, Ph.D., Dept. of Radiology, LAC+USC Medical Center. Los Angeles, CA

With the CT Spiral Phantom, the end user can: With the CT Spiral Phantom:
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)
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