MRI Phantom

Phantom for comprehensive evaluation of critical imaging parameters of magnetic resonance imaging (MRI) in a time efficient manner. The phantom can be used for the measurement of absolute values for calibration purposes. However, its design is optimised for time-efficient daily Quality Assurance too.

It can be used to measure:

  • geometric distortion
  • spatial resolution
  • slice thickness and position
  • interslice Gap
  • T1 and T2 values
  • image bandwidth
  • low contrast detectability
  • image uniformity
  • signal-to-noise ratio (SNR)
  • physical and electronic slice offset
  • point of reference
  • bandwidth: water-fat shift

Features

  • Complies with:
    • ACR MRI Accreditation Program
    • IPEM Report 80 “Quality Control in MRI”, 1998
    • AAPM Rep. 28 “Quality Assurance methods & phantoms for MRI”, 1990
    • AAPM Rep. 34 “Acceptance testing of MRI systems”, 1992
    • AAPM Rep. 100 “Acceptance & Quality Assurance procedures for MRI facilities”, 201
  • CE certified

Basic Specifications

Specifications can be modified if required. 

  • outside cylinder diameter: 220 mm (180 mm)
  • outside cylinder height: 150 mm
  • inside cylinder diameter: 204 mm (173 mm)
  • inside cylinder height: 130 mm
  • filled with 10 mmol nickel chloride solution containing sodium chloride 75 mmol
  • four sets of paired 45° wedges are located on both sides of the phantom. The lower pairs are 30 x 30 mm, and the upper ones are 40 x 40 mm. The distance between intersection points of the lower and upper pairs is 90 mm
  • optional 6 removable vials for test samples - replacing the “T1 and T2 sample vials”, includes 6 additional vials (in 12 total) 
  • optional detachable 3-axis spirit level 
  • optional hard-sided carrying case (MR unsafe) 

T1 and T2 sample vials

  • 6 cylindrical vials Ø19 x 41 mm
  • refillable from outside
  • filled with different configurations of nickel chloride and sodium chloride solution, precise information to be found in the manual

Resolution insert

  • four matrices of holes, diameters: 0.8, 0.9, 1.0 and 1.1 mm
  • spaces between the holes are equal to hole diameters
  • two small containers with water and fat for water-fat shift evaluation

Slice thickness insert

  • 180 x 46 x 10 mm PMMA plate
  • 1 mm wide and 5 mm deep counter-descending slits on both sides
  • slits form two ramps descending at 1:10

Geometric distortion insert

  • 10 x 10 array of squares
  • 148 mm on a side
  • 10 mm thick

Low contrast insert

  • 4 polycarbonate discs 0.05, 0.1, 0.15 and 0.2 mm in thickness
  • partial volume contribution of these sheets and filling solution produce contrasts: 1.4, 2.5, 3.6 and 5.1%
  • each disc contains 12 groups of 3 holes arranged in spokes
  • each spoke has the same diameter
  • diameters range from 7.0 to 1.5 mm (0.5 mm step)

Documents

Sorry, there are no documents available for this product.

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