Pro-MRI ACR Medium

ACR accredited Medium 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
• 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:

• outside cylinder diameter: 178 mm (7’’)
• outside cylinder height: 157 mm
• inside cylinder diameter: 165 mm (6,5’’)
• inside cylinder height: 134 mm
• the phantom is filled with 10 millimolar (mmol) nickel chloride solution containing 0.45% by weight sodium chloride
• the outside of each phantom has the words “NOSE” and “CHIN” etched into it as an aid to orienting the phantom for scanning, as if it were a head

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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:

• 1 mm wide counter-descending slits on both sides
• slits form two ramps descending at 1:10

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geometric distortion insert:

• 3x3 holes array, 40 mm spacing,
• 2 mm diameter
• 120 mm on a side
• 10 mm thick

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low contrast insert:

• partial volume contribution of these sheets and filling solution produce contrasts: 1.4, 2.5, 3.6, and 5.1%
• each disc contains 10 groups of 3 holes arranged in spokes
• each spoke has the same diameter
• diameters range from 7.0 to 1.5 mm

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‍slice position accuracy:

• one set of paired 45° wedges. The distance between the intersection of the wedges is 100 mm

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product included:‍

• hard-sided carrying case (MR unsafe) (09-102)
• optional 2-axis spirit level (09-104-1)

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Product features:

• ACR Accredited
• 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