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Fluke 76-908, 76-907 user manual Nuclear Associates, Operators Manual

Models: 76-908 76-907

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Nuclear Associates 76-908 & 76-907

Operators Manual

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 linearity.

A small pancake shaped container holding producing solution is attached on the diagonal surface of the phantom. It is used to detect phase errors.

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Fluke 76-908, 76-907 user manual Nuclear Associates, Operators Manual

Contents

March Manual No. 38616 Rev AAPM MRI PhantomsNuclear Associates 76-907 and All product names are trademarks of their respective companiesFluke Biomedical Radiation Management Services6045 Cochran Road Cleveland, Ohio Operations General InformationTable of Contents Blank page 1.1 Introduction General InformationSection 1.2 Phantom DescriptionFigure 1-2. Resolution Block Detail 1.2.1 3D Resolution and Slice 3DRAS Phantom ModelResolution Block Detail - 2 Required Outer Shape 6 X 6 X 5 Cubical BoxPhantom Description Figure 1-3. Resolution Sections in Three Imaging PlanesGeneral Information 2 mm Gap 1 mm Gap 1 mm GapOperators Manual 1.2.2 Uniformity and Linearity UAL PhantomNuclear Associates Figure 1-5. Slice Thickness SectionsPhantom Description MR Phantom for Spatial Linearity, Signal-To-Noise, and Image ArtifactGeneral Information UAL PhantomNuclear 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 Phantom Preparation 2.1.1Signal Producing SolutionOperation 2.1.2Filling the Phantom2.2.1 Positioning the Phantom 2.3 Tests with 3D Resolution and Slice 3DRAS Phantom2.2 Preparation for Scanning 2.2.2 Scanning ParametersTests with 3D Resolution and Slice 3DRAS Phantom 2.3.2 Signal-To-Noise Ratio2.3.3 High-Contrast Spatial Resolution OperationNuclear Associates 2.3.4 Slice Thickness2.3.5 Slice Position and Separation Operators ManualTests 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 Tests with 3D Resolution and Slice 3DRAS Phantom OperationNuclear Associates Operators ManualFigures 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 2.4.2 Spatial Linearity Distortion 2.4 Tests With Uniformity and Linearity UAL Phantom2.4.1 Image Uniformity Nuclear AssociatesOperation 2.4.3 Image ArtifactsTests with Uniformity and Linearity UAL Phantom DC-Offset Errors 2.4.4 Action Criteria2.4.5 Example Images Receive Quadrature ErrorsOperation Tests with Uniformity and Linearity UAL PhantomOperators Manual Nuclear Associates2-14 Tests with Uniformity and Linearity UAL Phantom Operation2-15 Fluke Corporation Radiation Management Services6045 Cochran Road Cleveland, Ohio