模体用来检测医院的CT性能，由塑料制成，Catphan500, Catphan600, Catphan5700, CTP500, CTP600, CTP700等. 另外一个是医院的磁共振性能检测模体，完全使用有机玻璃制成，也有两个型号，其中的圆柱形，就是Magphan® SMR170，厂家是美国模体实验室。
功能：Phantomlab与物理学家兼哲学家Goodenough, Ph.D.,共同努力发展了Catphan®模体。
新型的Catphan®模体设计是基于医疗成像仪器方面二十多年的科学研究和临床经验。
该种模体可以应用于轴向和螺旋CT扫描成像系统的各种操作评价以及质量保证系统。
不同的模块组成了Catphan®模体，这些模块尚可适用于连续20cm空间。
为了在Catphan®424中使用水容器，所有Catphan®组件都是由Solid-cast材料构成。
Solid-cast结构可以降低材料的吸水性和水浴模体相关的露水问题。
包括Catphan®500在内共有三种基本Catphan®模体。
Catphan®是为螺旋CT扫描而特殊设计的。
包括Catphan®模体的选择性测试模块及其标
准，经常被用于进行许多实验测量。
包括以下
一、参数的评估：
扫描几何学(层宽和灵敏度曲线)
高分辨率(最高至20线对/厘米)
体模定位验证
病人定位系统验证
supra-slice低对比度灵敏度
subslice低对比度灵敏度
空间均匀性
扫描增量
CT系统噪声(精度)
圆对称性
灵敏度(线性)
象素(矩阵)尺寸
动态扫描
X、Y、Z轴的点扩散函数和调制传递函数(MTF)
- 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 function (MTF) for the x, y, and z axes
Catphan® 700(Stock CTP700) - Complete Catphan® including housing and case, e with the following test modules:
CTP682 - Geometry sensitometry and point source module
CTPline pair high resolution module
CTP515 - Subslice and supra-slice low contrast
CTP721 - Wave insert
CTP723 - Bead blocks
CTP712 - Uniformity section
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| Catphan 600®(Stock CTP600) - Complete Catphan® including housing and case, e with the following test modules:
CTP404 - Slice width, sensitometry and pixel size
CTP591 - Bead Geometry module
CTPline pair high reslution and point source
CTP515 - Subslice and supra-slice low contrast
CTP486 - Solid image uniformity module
Catphan® 500(Stock CTP500) - Complete Catphan including housing and case, e with the following test modules:
CTP401 - Slice width, sensitometry and pixel size
CTPline pair high resolution and point source
CTP515 - Subslice and supra-slice low contrast
CTP486 - Solid image uniformity module
Catphan® 412(Stock CTP412) - Complete Catphan including housing and case, e with the following test modules:
CTP401 - Slice width, sensitometry and pixel size
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| CTP445 - MTF module with bead point source
CTPline pair high resolution
CTP263 - Low contrast
CTP486 - Solid image uniformity module
Catphan® 424(Stock CTP424) - Complete Catphan including housing and case, e with the following test modules:
CTP401 - Slice width, sensitometry and pixel size
CTP445 - MTF module with bead point source
CTPline pair high resolution
CTP263 - Low contrast
CTP422 - Liquid bath
Catphan® 440(Stock CTP440) - Complete Catphan including housing and case, e with the following test modules:
CTP401 - Slice width, sensitometry and pixel size
CTP592 - Low and high contrast resolution module
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| 产品编号 | Description | | CTP700 | Complete Catphan® 700 including housing, case, and test modules | | Includes the following: CTP682-Geometry sensitomety 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 | | CTP600 | Complete Catphan® 600 including housing, case, and test modules | | Includes the following: 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 | | CTP500 | Complete Catphan® 500 including housing, case, and test modules. Includes the following: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 | | CTP412 | Complete Catphan® 412 including housing, case, and test modules. Includes the following:CTP401-Slice width, sensitometry and pixel size, CTP446-20 line pair high resolution, CTP263-Low Contrast, CTP486-Solid image uniformity module | | CTP424 | Complete Catphan® 424 including housing, case, and test modules. Includes the following:Slice width, sensitometry and pixel size, CTP445-MTF module with bead point source, CTP446-20 line pair high resolution, CTP263-Low contrast,uid bath. | | CTP440 | Complete Catphan® 440 including housing, case, and test modules. Includes the following:CTP401-Slice width, sensitometry and pixel size, CTP592-Low and high contrast resolution module | | CTP401 | Slice width, sensitometry and pixel size module | | CTP404 | Slice width, sensitometry and pixel size module | | CTP445 | MTF Module with bead point source | | CTP446 | 20 line pair high resolution module | | CTP528 | 21 line pair high resolution and point source module | | CTP422 | Liquid Bath | | CTP486 | Solid image uniformity module | | CTP263 | Low Contrast Module | | CTP515 | Sub-slice and supra-slice low contrast module | | CTP592 | Low and high contrast resolution module | | CTP591 | 40mm bead geometry module | | CTP501 | 16cm housing and mount with modules CTP591 & CTP486-3 | | CTP295 | Liquid bath scan alignments inserts | | CTP291 | Liquid bath acrylic LSF inserts | | CTP299 | Teflon annulus | | CTP539 | 30cm OD uniformity material body annulus | | CTP540 | 35cm OD uniformity material body annulus | | CTP650 | 38cm OD uniformity material body annulus | | CTP579 | 25-35cm oval OD uniformity material body annulus | | CTP651 | 30-38cm oval OD uniformity material body annulus | | CTP599 | 45-55cm oval OD uniformity material body annulus | | CTP326 | 32cm OD acrylic body annulus | | CTP541 | 16cm OD housing and mount | | CTP536 | 35cm center off-center housing | | CTP553 | 32cm Acrylic Dose Phantom | | CTP554 | 16cm Acrylic Dose Phantom | | CTP558 | Dose Phantom Set includes 16cm & 32cm |
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| | AutoQALite Software for use with the CatPhan CT Phantoms. | |
An updated Windows program to the original PC/AutoQA for CT. This update provides expanded image processing capacity for up to 96 images in a data set with a comprehensive trend analysis feature.
PROCESSING FEATURES
CT AutoQA Lite™ can be configured with various vendor phantoms including ACR and all Catphan® models.
CT AutoQA Lite™ is DICOM3.0 compatible, a DICOM Storage Provider (SCP) Application license is provided.
CT AutoQA Lite™ provides the same analysis function as the original PC/AutoQA (DOS) version.
·Pixel Size – test verifies the expected pixel size based on the display field of view and the reconstruction matrix size from the measured set of four calibration pins positioned at a known physical location as specified in the Catphan® section CTP401 and CTP404
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