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Catphan500 CTP500磁共振性能檢測模體

深圳市灣邊貿易有限公司

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企業(yè)認證：

價格：電議

所在地：廣東深圳市

型號：Catphan500

更新時間：2024-07-04

瀏覽次數：5025

公司地址：深圳市龍華新區(qū)觀瀾大道75號田背花園E單元806.

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產品簡介

模體用來檢測醫(yī)院的CT性能，由塑料制成，Catphan500, Catphan600, Catphan5700, CTP500, CTP600, CTP700等. CTP500磁共振性能檢測模體

公司簡介

深圳市灣邊貿易有限公司成立于2005年1月，注冊資金1000萬元人民幣，國家稅務局2014、2015及2017年度納稅A級企業(yè)，擁有進出口權及二類醫(yī)療資質。專注于進口儀器、進口設備、進口工具等產品的開發(fā)與銷售。公司從國外源頭廠家直接采購，質量保證，交貨周期快，為客戶提供優(yōu)惠的價格及優(yōu)質的服務。

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產品說明

深圳灣邊貿易供應CTP500磁共振性能檢測模體

模體用來檢測醫(yī)院的CT性能，由塑料制成，Catphan500, Catphan600, Catphan5700, CTP500, CTP600, CTP700等. 另外一個是醫(yī)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。

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
深圳灣邊貿易供應CTP500磁共振性能檢測模體

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

深圳灣邊貿易供應CTP500磁共振性能檢測模體

產品編號	Description
CTP700	Complete Catphan® 700 including housing, case, and test modules
CTP700	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
CTP600	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

深圳灣邊貿易供應CTP500磁共振性能檢測模體

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.

Verification

Phantom ID: 600 Series (Phantom Lab) Orientation 1
Phantom Center:257,254 CT#base:106 +/- 5.1

Pixel Size

Expected(mm)		X-Axis(mm)		Y-Axis(mm)
0.49		0.49 0.49		0.49 0.49

Phantom Rotation: -0.5 degrees

Phantom Center is:

0.49mm Right of center
0.98mm Above of center

CT# Linearity

Contrast Scale: 0.000189

Material	Teflon	Air	LDPE	Delrin	Acrylic	PMP
CT#	891	-1000	-92	297	130.1	-185

Slice Thickness

Expected(mm)		X-Axis(mm)		Y-Axis(mm)
5.00		4.89 4.91		4.88 4.95

Avg Slice Width: 4.91 mm
Table Position Offset: -1.39
Vertical Angle: 0.2 degrees
Horizontal Angle: 0.1 degrees

CT Linearity (Sensitometry) – Mean CT values are calculated for each reference material in the phantom test section. The measured CT numbers for test materials are fit to the linear attenuation coefficients using a linear least squares for energies from 40 to 100 keV. The variance representing the lowest variance was designated as the scanner’s effective energy. The linear attenuation coefficients for this effective energy are used to determine the contrast scale from the calculated linearity slope.
Slice Thickness – is determined from the average full-width at half-maximum (FWHM) of the CT number profile for each wire ramp. The expected slice width is compared with all four measured ramps values. A trigonometric conversion is calculated based on the known ramp angle to yield the slice width. This test provides information on the position of the phantom and the vertical and horizontal tilt values. A rotation of the phantomaboutan axis perpendicular to the ramps is also computed. Since there are two pairs of ramps orientated along the orthogonal directions, phantom rotationsaboutboth the vertical and horizontal axes can be estimated.
Localizer and Table Incrementation Accuracy – can be evaluated from the slice width section when the ramps are paired at opposing angles. The slice width test outputs a parameter called Table Position Offset, which is an offset in
深圳灣邊貿易供應CTP500磁共振性能檢測模體

Spatial Resolution
(MTF)

Critical Frequencies (cy/cm)
50% 4.64
10% 7.54
2% 9.12

the z-axis relative to the center of the opposing wire (or test section). Verification of the scanner table incrementation accuracy can be checked by incrementing the table by 30 mm and then returning the table to the starting position and scanning the slice width module. The reported table position offset values should be the same.

Spatial Resolution (MTF) – The modulation transfer function (MTF) is calculated from the discrete Fourier transform of the average vertical and horizontal LSF’s of the point spread function from the bead or wire test section. The program reports the 50%, 10% and 2% MTF cutoff values.
Noise and Mean CT Number – is calculated from several regions of interest (ROI) positioned over a water/uniformity phantom section. The number, size and location of these ROI’s are variable, but typically five are defined: one at the phantom center and the other four along the axes at the same radius covering a 15 x 15 pixel area.
Uniformity – Vertical and horizontal profiles 10 pixels wide are generated and averaged through the phantom’s center. The fractional uniformity of the profile is calculated as the percentage of the pixels within an acceptable range determined by + 2 times the central noise or + 10H, whichever is smaller.
Contrast Detail (Low Contrast Resolution) – Theoretical Contrast-Detail data is calculated based on the measured
深圳灣邊貿易供應CTP500磁共振性能檢測模體

Noise

X(mm)	Y(mm)	Mean(H)	SD(H)
0.0	50.0	5.48	2.50
50.0	0.0	4.86	2.51
0.0	-50.0	2.44	1.99
-50.0	0.00	3.46	2.22
0.00	0.0	5.16	2.62

Uniformity

	X-Axis	Y-Axis
Uniformity Index:	0.92	0.95
Standard Deviation (H):	4.2

Low
Contrast

Contrast(%)	0.6	0.35	0.25	0.20	0.16	0.14
Detail(mm)	3.0	5.0	7.0	9.0	11.0	13.0

noise of the water/uniformity test section. Note: low contrast modules (CTP263 and CTP515) are not used in this measurement. This represents a conservative estimate of the minimum contrast level required such that a cylindrical object of a given diameter should be detected.
NEW FEATURES

The Catphan 600 bead module consists of 2 different sets of angled ramps containing small tungsten beads in a 40mm thick section. The first set consists of 2 pairs in opposing directions, one pair oriented horizontally and the other pair oriented vertically. This uses 0.34mm diameter beads with an “effective” separation of 1.0mm. The second set contains only a single pair of smaller beads (0.17mm diameter) oriented vertically with an “effective” separation of only 0.25mm. This type of test object allows the user to make a visual estimate of the actual slice thickness by counting the individual beads in the image and multiplying by the known separation. The beads at both ends of the set that are visualized in the image may be a much less intensity than the more centrally located beads in which case they might be
深圳灣邊貿易供應CTP500磁共振性能檢測模體

Verification

Phantom ID: 600 Series (Phantom lab) Orientation 1
Phantom Center: 257,254 CT# base: 106 +/- 5.1

Slice
Thickness
(Bead Ramp)

Expected (mm)	Measured (mm)
1.00	0.75 1.17

Average Slice Width: 0.96mm
Table Position Offset: 1.94mm
Vertical Angle: 1.6 degrees

only counted as ?. The AutoQA Lite program basically performs this visual assessment. However, since the data is processed quantitatively, it is possible to use some weighting scheme for the terminal beads to provide a more objective weighting factor. In addition, since the ramps are always used as opposing sets, it is also possible to perform additional calculations that would affect the quality of this test and the reliability and accuracy of the results. This includes: the axial offset of the center of this module with respect to the slice location and angular tilt of the phantom vertically and horizontally. Lastly, this module contains an off-centered wire as an impulse response source through the entire 40mm module thickness allowing for MTF measurements for each slice.

RESULT FEATURES
深圳灣邊貿易供應CTP500磁共振性能檢測模體
CT AutoQA Lite? provides two database options for storage of test results. ‘Monitor Database’, is the first database option designated for constancy/monitoring and islinked to the Trend Analysis function. The ‘Service Database’ is the second data base option and is designed for more extensive service and/or acceptance testing data sets. If neither of

these two options is appropriate, the user can select the option to not store results but only view results. The basic display of results is provided as a scrolling window, with a print ‘Test Results’ function button. The Trend Analysis feature is available for Noise/Mean CT number, slice width, spatial resolution (MTF), and CT linearity measurements. The Trend Analysis function islinked to the monitor database files and follows guidelines for CT constancy testing established by the International Electrotechnical Commission (IEC) 1223-2-6 (Constancy tests - X-ray equipment for computed tomography, First Edition 1994-04).

MINIMUM SYSTEM REQUIREMENTS

Minimum Requirements for Windows XP, CD drive

深圳灣邊貿易供應CTP500磁共振性能檢測模體
深圳灣邊貿易供應CTP500磁共振性能檢測模體
深圳灣邊貿易供應CTP500磁共振性能檢測模體
深圳灣邊貿易供應CTP500磁共振性能檢測模體
深圳灣邊貿易供應CTP500磁共振性能檢測模體
深圳灣邊貿易供應CTP500磁共振性能檢測模體
深圳灣邊貿易供應CTP500磁共振性能檢測模體
深圳灣邊貿易供應CTP500磁共振性能檢測模體
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