The Phantom Laboratory phantomlab Cylindrical Magphan170

Description

Magphan phantoms are designed to perform a wide range of performance evaluations of Magnetic Resonance Imaging (MRI) Scanners.

The Magphan SMR170 phantom was developed in the 1990s, in the early days of MRI.  Our newer EMR and TMR Magphan phantoms are designed for modern MRI scanners, and we highly recommend them over the SMR170. We can, however, manufacture the 170 phantom for customers who request them.

The Magphan SMR170  has a conventional cylindrical housing for test groups and manufacturers who base their performance specifications on cylindrical phantoms. It has a removable end plate for internal access. The acrylic cylinder has an outer diameter of 20cm and an inner diameter of 19cm. The Magphan SMR170 phantoms are shipped without any fluid. Customers must fill them with appropriate MR solutions.

Test Cube: Both the cylindrical and spherical Magphan® use a 10cm test cube for image quality measurements. Manufactured from 6mm-thick polycarbonate plastic the test cube has an outer diameter of 10cm. The test cube contains the slice thickness ramps, sensitometry vials, a high-resolution test plate, and a low contrast disk.

Configurations: The test cube plates can be assembled in the standard 2-D configuration, with dual opposed slice thickness ramps which allow operators to rapidly verify that the phantom’s z axis is precisely aligned perpendicular to the imaging plane. Nylon screws hold the unit together, allowing you to change test plates or cube sides into a 3-dimensional configuration. The 3-D configuration allows x, y, and z slice geometry measurements to be obtained from a single data acquisition

Test-Summary

The test cube and phantom housing contain features that allow for comprehensive testing of the maximum achievable critical MRI scanner parameters. The major components and the tests they support are listed below.

• Slice Thickness Ramps
  – Phantom Position
  – Scan Slice Width
  – Multi-slice Spacing and Contiguity
  – Patient Alignment (3D)
  – Table Increment Accuracy

• Sensitometry Vials
  – T1 Measurements
  – T2 Measurements

• High Resolution Test Plate
  – High Resolution Measurements (1 to 11 line pairs per cm)
  – Geometric Distortion

• Cube Support Disk
  – Geometric Distortion
  – Pixel(matrix) size verification.

• Outer Housing
  – Spatial Uniformity
  – Signal to Noise Ratio

 

 

 

 

 

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