Catphan® 700
Comprehensive CT Performance Measurements
The Catphan® 700 Phantom has been designed to address the image performance measurement requirements for state of the art CT volume scanners.
The phantom retains many of the tests and features offered in the other Catphan® models including the CTP515 low contrast test module and integrated case mounting system. Other test objects have been refined in this development including the addition of higher resolution test patterns in the new CTP714 1 to 30 line pair per centimeter test module, the addition of smaller acrylic spheres to our low contrast sphere array contained in the CTP682 sensitometry slice geometry module, and additional bone and lung samples to assist customers using their CT images for radiation therapy treatment planning.
Along with numerous modifications, the phantom also contains the new CTP721 wave insert for measuring slice geometry and resolution across the scan area. Also, in order to address possible variables due to test pattern orientation with the scanners x and y axis, the phantom has a new rotation mount. This enables the mounted phantom to be rotated 360° with alignment detents at 45° intervals to study possible angular position-dependent results.
Catphan® 700 design and construction
Test precision, durability, and efficient operation are the key design. The Catphan® 700 continues to utilize the modular concept developed with the original Catphan® phantom. The three solid cast test modules are mounted inside the phantom’s housing. The wave insert and complementary MTF bead blocks press into pockets on the uniformity body that attaches to the module housing. The new rotating mount is connected to the module housing. Using the new mount, the phantom can be quickly cantilevered off the end of the table and rotated into various angular positions to allow for artifact free scanning.
While most customers will never choose to disassemble their phantom, special care was taken in the development of the Catphan® to enable disassembly for potential upgrades or modifications. To prevent hardware artifacts, no metal hardware is used to connect the wave uniformity section to the module housing or between the housing and the mount.
Catphan® 500, 600, are designed for comprehensive evaluation of axial, spiral, multislice, conebeam, and volume CT scanners.
Catphan® Phantoms are internationally recognized for measuring the MAXIMUM obtainable performance of axial, spiral and multislice CT scanners. The Catphan® modular design allows test modules to be interchanged.
The Catphan® Phantoms are constructed from modules that fit snugly into a durable 20cm housing. All Catphan® modules are made from solid-cast materials, solid-cast construction eliminates material absorption of water, freezing and leaks associated with water bath phantoms, as well as, problems related to varied water sources.
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| Catphan® Modules | Catphan® 600 |
Catphan® Phantom with Optional Annuli |
- scan slice geometry (slice width and slice sensitivity profile)
- high resolution (up to 20 or 21 line pairs per cm)
- phantom position verification
- patient alignment system check
- low contrast sensitivity
- comparative subslice and supra-slice low contrast sensitivity
- spatial uniformity
- scan incrementation
- noise (precision) of CT systems
- circular symmetry
- sensitometry (linearity)
- pixel (matrix) size
- point spread function and modulation transfer (MTF) for the x, y, and z axes
The Phantom Laboratory and physicist, David Goodenough, Ph.D., have worked together to develop the Catphan® Phantoms.
The new Catphan® designs are based on three decades of scientific research and direct field experience in the evaluation of medical imaging equipment. These phantoms are used to complete comprehensive performance evaluations of axial, spiral and multislice CT scanners and to implement quality assurance programs.
As your testing needs change and new modules are developed you can upgrade test modules that are compatible with your Catphan® system. Additionally, the Catphan® system is ideal for traveling physicists and engineers who conduct comprehensive evaluations of CT scanners at multiple locations as they are easily transportable and no draining is required between uses.
Catphan® 700 Modules
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CTP712 Uniformity Section |
CTP721 Wave Insert and CTP723 Bead Blocks |
CTP515 Low Contrast Module |
CTP714 30 Line Pair High Resolution Module |
CTP682 Geometry Sensitometry Module |
Catphan® QA Automated Computer Analysis Program from Image Owl, Inc.
To assist Catphan® customers, The Phantom Laboratory has worked with Image Owl, Inc. to develop a web-based automated service for analysis of Catphan® phantom images with the versatility of Internet access. Catphan® 500, 503, 504, 600, and 700 models are supported.
The Phantom Laboratory sponsors a free version of the service available for Catphan® customers. Customers scan their phantom and upload a DICOM image to the web-based server where the test module is identified and results reported by the automated system. The report is available to download or print for the customer's records.
Image Owl offers additional advanced tools and services with a yearly subscription, including multiple image (slice) uploads, longitudinal performance history, and user specified alerts.
Please visit the Image Owl site for more information on the services available. www.imageowl.com
Contact Supertech® for complete product brochures.|
Catphan® 500 Models Complete Catphan® including housing and case, equipped with the following test modules: |
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| Item # | Description |
| CTP401 | Slice width, sensitometry and pixel size |
| CTP528 | 21 line pair high resolution and point source |
| CTP515 | Subslice and supra-slice low contrast |
| CTP486 | Solid image uniformity module |
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Catphan® 503 Models Complete Catphan® including housing and case, equipped with the following test modules: |
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| Item # | Description |
| CTP404 | Slice width, sensitometry and pixel size |
| CTP528 | 21 line pair high resolution and point source |
| CTP486 | Solid image uniformity module |
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Catphan® 504 Models Complete Catphan® including housing and case, equipped with the following test modules: |
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| Item # | Description |
| CTP404 | Slice width, sensitometry and pixel size |
| CTP528 | 21 line pair high resolution and point source |
| CTP515 | Subslice and supra-slice low contrast |
| CTP486 | Solid image uniformity module |
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Catphan® 600 Models Complete Catphan® including housing and case, equipped with the following test modules: |
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| Item # | Description |
| CTP404 | Slice width, sensitometry and pixel size |
| CTP591 | Bead geometry module |
| CTP528 | 21 line pair high resolution and point source |
| CTP515 | Subslice and supra-slice low contrast |
| CTP486 | Solid image uniformity module |
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Catphan® 700 Models Complete Catphan® including housing and case, equipped with the following test modules: |
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| Item # | Description |
| CTP682 | Geometry sensitometry and point source module |
| CTP714 | 30 line pair high resolution module |
| CTP515 | Subslice and supra-slice low contrast |
| CTP721 | Wave insert |
| CTP723 | Bead blocks |
| CTP712 | Uniformity section |
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Individual Catphan® Parts |
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| Item # | Description |
| CTP623 | Catphan® 600 housing |
| CTP627 | Catphan® 600 mount assembly |
| CTP451 | Catphan® case |
| Individual Catphan® Sections | |
| Item # | Description |
| CTP404 | Slice width, sensitometry and pixel size module |
| CTP528 | 21 line pair high resolution and point source module |
| CTP486 | Solid image uniformity module |
| CTP515 | Subslice and supra-slice low contrast module |
| CTP591 | 40mm bead geometry module |
| CTP682 | Geometry sensitometry and point source module |
| CTP714 | 30 line pair high resolution module |
| Optional Catphan® Components | |
| Annuli: | |
| Item # | Description |
| CTP299 | Teflon annulus |
| CTP539 | 30cm OD 5cm thick uniformity material body annulus |
| CTP653 | 32cm OD 5cm thick uniformity material body annulus |
| CTP653-10 | 32cm OD 10cm thick uniformity material body annulus |
| CTP653-15 | 32cm OD 15cm thick uniformity material body annulus |
| CTP653-20 | 32cm OD 20cm thick uniformity material body annulus |
| CTP540 | 35cm OD 5cm thick uniformity material body annulus |
| CTP650 | 38cm OD 5cm thick uniformity material body annulus |
| CTP650-10 | 38cm OD 10cm thick uniformity material body annulus |
| CTP650-15 | 38cm OD 15cm thick uniformity material body annulus |
| CTP650-20 | 38cm OD 20cm thick uniformity material body annulus |
| CTP579 | 25-35cm oval OD 5cm thick uniformity material body annulus |
| CTP579-10 | 25-35cm oval OD 10cm thick uniformity material body annulus |
| CTP579-15 | 25-35cm oval OD 15cm thick uniformity material body annulus |
| CTP579-20 | 25-35cm oval OD 20cm thick uniformity material body annulus |
| CTP651 | 30-38cm oval OD 5cm thick uniformity material body annulus |
| CTP651-10 | 30-38cm oval OD 10cm thick uniformity material body annulus |
| CTP651-15 | 30-38cm oval OD 15cm thick uniformity material body annulus |
| CTP651-20 | 30-38cm oval OD 20cm thick uniformity material body annulus |
| CTP599 | 45-55cm oval OD 5cm thick uniformity material body annulus |
| Module housings, hold one or more modules: | |
| CTP541 | 16cm OD housing and mount |
| Dose Phantoms: | |
| CTP553 | 32cm Acrylic Dose Phantom |
| CTP554 | 16cm Acrylic Dose Phantom |
| CTP558 | Dose Phantom Set includes 16cm and 32cm |