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(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, equipped with the following test modules: 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 catphan 600?(stock ctp600) - complete catphan? including housing and case, equipped with the following test modules: ctp404 - slice width, sensitometry and pixel size ctp591 - bead geometry module ctp528 - 21 line 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, equipped with the following test modules: 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 catphan? 412(stock ctp412) - complete catphan including housing and case, equipped with the following test modules: ctp401 - slice width, sensitometry and pixel size ctp445 - mtf module with bead point source ctp446 - 20 line pair high resolution ctp263 - low contrast ctp486 - solid image uniformity module catphan? 424(stock ctp424) - complete catphan including housing and case, equipped with the following test modules: ctp401 - slice width, sensitometry and pixel size ctp445 - mtf module with bead point source ctp446 - 20 line pair high resolution ctp263 - low contrast ctp422 - liquid bath catphan? 440(stock ctp440) - complete catphan including housing and case, equipped with the following test modules: ctp401 - slice width, sensitometry and pixel size ctp592 - low and high contrast resolution module 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, ctp422-liquid 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 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.