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標題: 美國Catphan500CT性能測試醫療模體 [打印本頁]

作者: coastaltrading 時間: 2015-8-22 09:32
標題: 美國Catphan500CT性能測試醫療模體
模體用來檢測醫院的CT性能，由塑料制成，Catphan500, Catphan600, Catphan5700, CTP500, CTP600, CTP700等. 另外一個是醫院的磁共振性能檢測模體，完全使用有機玻璃制成，也有兩個型號，其中的圓柱形，就是Magphan® SMR170，廠家是美國模體實驗室。

功能：Phantomlab與物理學家兼哲學家Goodenough, Ph.D.,共同努力發展了Catphan®模體。新型的Catphan®模體設計是基于醫療成像儀器方面二十多年的科學研究和臨床經驗。該種模體可以應用于軸向和螺旋CT掃描成像系統的各種操作評價以及質量保證系統。

不同的模塊組成了Catphan®模體，這些模塊尚可適用于連續20cm空間。為了在Catphan®424中使用水容器，所有Catphan®組件都是由Solid-cast材料構成。Solid-cast結構可以降低材料的吸水性和水浴模體相關的露水問題。

包括Catphan®500在內共有三種基本Catphan®模體。Catphan®是為螺旋CT掃描而特殊設計的。

包括Catphan®模體的選擇性測試模塊及其標

準，經常被用于進行許多實驗測量。包括以下

一、參數的評估：

掃描幾何學(層寬和靈敏度曲線)

高分辨率(最高至20線對/厘米)

體模定位驗證

病人定位系統驗證

supra-slice低對比度靈敏度

subslice低對比度靈敏度

空間均勻性

掃描增量

CT系統噪聲(精度)

圓對稱性

靈敏度(線性)

象素(矩陣)尺寸

動態掃描

X、Y、Z軸的點擴散函數和調制傳遞函數(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

產品編號 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.

•

ixel 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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