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Fluke 76-907, 76-908 user manual Operation, Tests with 3D Resolution and Slice 3DRAS Phantom

Models: 76-908 76-907

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Operation	2
Tests with 3D Resolution and Slice (3DRAS) Phantom

Figures 2-7 and 2-8 show an example of the slice thickness measurement analysis. A signal intensity profile is drawn vertically through a set of slice thickness ramp Images. The profile is the slice thickness profile. One can also obtain the slice thickness by measuring full width half maximum of the profile. Figure 2-8 represents the same data using a larger zoom factor.

Figure 2-7.

Figure 2-8

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Fluke 76-907, 76-908 user manual Operation, Tests with 3D Resolution and Slice 3DRAS Phantom

Contents

All product names are trademarks of their respective companies AAPM MRI PhantomsNuclear Associates 76-907 and March Manual No. 38616 RevFluke Biomedical Radiation Management Services6045 Cochran Road Cleveland, Ohio Operations General InformationTable of Contents Blank page 1.2 Phantom Description General InformationSection 1.1 IntroductionOuter Shape 6 X 6 X 5 Cubical Box 1.2.1 3D Resolution and Slice 3DRAS Phantom ModelResolution Block Detail - 2 Required Figure 1-2. Resolution Block Detail2 mm Gap 1 mm Gap 1 mm Gap Figure 1-3. Resolution Sections in Three Imaging PlanesGeneral Information Phantom DescriptionFigure 1-5. Slice Thickness Sections 1.2.2 Uniformity and Linearity UAL PhantomNuclear Associates Operators ManualUAL Phantom MR Phantom for Spatial Linearity, Signal-To-Noise, and Image ArtifactGeneral Information Phantom DescriptionNuclear Associates The flood phantom has a uniform solution, the image of which can be used to measure the uniformity in signal intensity in the images. The grid section consists of grids that can be used to assess geometric linearityOperators Manual 2.1.2Filling the Phantom 2.1.1Signal Producing SolutionOperation 2.1 Phantom Preparation2.2.2 Scanning Parameters 2.3 Tests with 3D Resolution and Slice 3DRAS Phantom2.2 Preparation for Scanning 2.2.1 Positioning the PhantomOperation 2.3.2 Signal-To-Noise Ratio2.3.3 High-Contrast Spatial Resolution Tests with 3D Resolution and Slice 3DRAS PhantomOperators Manual 2.3.4 Slice Thickness2.3.5 Slice Position and Separation Nuclear AssociatesTests with 3D Resolution and Slice 3DRAS Phantom 2.3.6 Example ImagesOperation Nuclear Associates Figures 2-2 and 2-3 represent two adjacent sagital views of the phantom. The resolution holes are well resolved in vertical and horizontal direction and the two slices are 6 mm apart SP = 14.5 and 20.5. The slice thickness images of short vertical lines on top and bottom of the phantom image again are from the crossed hot ramps of 2 mm top and 1 mm bottomOperators Manual Operation Tests with 3D Resolution and Slice 3DRAS PhantomOperators Manual Nuclear AssociatesFigures 2-7 and 2-8 show an example of the slice thickness measurement analysis. A signal intensity profile is drawn vertically through a set of slice thickness ramp Images. The profile is the slice thickness profile. One can also obtain the slice thickness by measuring full width half maximum of the profile. Figure 2-8 represents the same data using a larger zoom factor Tests with 3D Resolution and Slice 3DRAS PhantomOperation Nuclear Associates 2.4 Tests With Uniformity and Linearity UAL Phantom2.4.1 Image Uniformity 2.4.2 Spatial Linearity DistortionOperation 2.4.3 Image ArtifactsTests with Uniformity and Linearity UAL Phantom Receive Quadrature Errors 2.4.4 Action Criteria2.4.5 Example Images DC-Offset ErrorsTests with Uniformity and Linearity UAL Phantom OperationOperators Manual Nuclear Associates2-14 Tests with Uniformity and Linearity UAL Phantom Operation2-15 Fluke Corporation Radiation Management Services6045 Cochran Road Cleveland, Ohio