Pro-MRI

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 optimized for time efficient daily quality assurance too.

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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

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Technical data (can be modified to customer 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
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• 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
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• 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)
  
  

• 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) (09-103
• optional detachable 3-axis spirit level (09-104)
  
• optional heavy duty carrying case (09-102)

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Product 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”, 2010
• CE certified
• the manual provides detailed guidelines for carrying out each test, results assessment and registration

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