Pro-MRI Phantom Kit Assess Magnetic Resonance Imaging Distortion

The Pro-MRI Phantom is an exceptionally accurate phantom to assess magnetic resonance imaging distortion caused mainly by the nonlinearity of the magnetic gradients even in large field of view. Tests supported include:

• Geometric Distortion • Spatial Resolution • Slice thickness and position • Interslice Gap
• Estimate of Image Bandwidth • Low Contrast Detectability • Image Uniformity
• Signal-to-Noise Ratio (SNR) • Physical and Electronic Slice Offset • Landmark positions
• Versatile phantom for QC to ACR, AAPM and IPEM guidelines (220 or 180mm in diameter).
• When empty, the grid-air interface provides good contrast under CT. The phantom images well with all CT techniques and MRI sequences, including T1 weighted, T2 weighted, 3D Time of Flight, MPRAGE and CISS sequences.

Technical specifications

• 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
• T1 and T2 sample vials
  • 6 cylindrical vials Ø19 x 41 mm
  • refillable from outside
  • by default filled with 20 mmol nickel chloride and 15 mmol sodium chloride solution

• 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
  • 1mm wide and 5mm 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)