Nuclear Associates 76-907 and 76-908 AAPM MRI Phantoms Users Manual March 2005 Manual No. 38616 Rev. 3 ©2003, 200
Nuclear Associates 76-908 & 76-907 Operators Manual 1-6 The flood phantom has a uniform solution, the image of which can be used to measure t
OperationPhantom Preparation2 2-1Section 2 Operation 2.1 Phantom Preparation The phantoms can be shipped filled with solutions or solutions can be
Nuclear Associates 76-908 & 76-907 Operators Manual 2-2 2.2 Preparation for Scanning 2.2.1 Positioning the Phantom The 3DRAS phantom can be
OperationTests with 3D Resolution and Slice (3DRAS) Phantom2 2-3resonance frequency adjustment and some may be completely automated. Resonance freq
Nuclear Associates 76-908 & 76-907 Operators Manual 2-4 • The high contrast resolution should remain constant for repeated measurements und
OperationTests with 3D Resolution and Slice (3DRAS) Phantom2 2-5direction) is measured and related to the slice position. For a 45° ramp, the dist
Nuclear Associates 76-908 & 76-907 Operators Manual 2-6 Figures 2-2 and 2-3 represent two adjacent sagital views of the phantom. The resolut
OperationTests with 3D Resolution and Slice (3DRAS) Phantom2 2-7Figures 2-4 and 2-5 show two adjacent coronal views of the phantom. The slice thick
Nuclear Associates 76-908 & 76-907 Operators Manual 2-8 Figure 2-6 shows a resolution hole image against a background less opaque than in pr
OperationTests with 3D Resolution and Slice (3DRAS) Phantom2 2-9Figures 2-7 and 2-8 show an example of the slice thickness measurement analysis. A
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Nuclear Associates 76-908 & 76-907 Operators Manual 2-10 2.4 Tests With Uniformity and Linearity (UAL) Phantom 2.4.1 Image Uniformity Image
OperationTests with Uniformity and Linearity (UAL) Phantom2 2-11 (2) Non-linear magnetic field gradients Variability is best observed over the l
Nuclear Associates 76-908 & 76-907 Operators Manual 2-12 DC-Offset Errors DC-offset errors typically appear as a single bright pixel (someti
OperationTests with Uniformity and Linearity (UAL) Phantom2 2-13 Figure 2-9
Nuclear Associates 76-908 & 76-907 Operators Manual 2-14 Figure 2-10 is a flood image showing the uniformity of signal intensity. Field non-
OperationTests with Uniformity and Linearity (UAL) Phantom2 2-15Figure 2-12 is an image of the signal bubble for quadrature error. If there were
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iTable of Contents Section 1: General Information... 1-1 1.1 Intr
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General InformationIntroduction1 1-1Section 1 General Information 1.1 Introduction This user's manual describes a set of MRI phantoms that we
Nuclear Associates 76-908 & 76-907 Operators Manual 1-2 1.2.1 3D Resolution and Slice (3DRAS) Phantom (Model 76-908) The 3DRAS phantom has
General InformationPhantom Description1 1-3 Figure 1-3. Resolution Sections in Three Imaging Planes The slice-thickness phantom consists of tw
Nuclear Associates 76-908 & 76-907 Operators Manual 1-4 A ramp-crossing angle of 90° yields an angle of 45° between the ramp and the imaging
General InformationPhantom Description1 1-5MR Phantom for Spatial Linearity, Signal-To-Noise, and Image Artifact Figure 1-6. UAL Phantom MRI P
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