MRI Test Objects

MRI Test Objects - the "Eurospin Test System" These Test Objects are designed to be used for checking the image performance of MR Scanners with static fields in the range from 0.02 to 2Tesla. The design was based upon Collaborative Research work within the framework of the Concerted Research project "Identification and Characterisation of Biological Tissues by NMR" COMAC-BMU II 2.3 from 1984 led by Dr F.Podo. It was further developed by a group led by Dr. R.A.Lerski at Hammersmith Hospital medical School.

The Annulus for the Europsin Test System The Eurospin Test System for MRI Scanners

Test Object #1 - "Flat Field" is for assessing Uniformity, Ghosting, Image signal to noise and Uniformity of Image Noise. Test Object #2 - "Distortion/Slice A" - is for assessing Geometric Distortion, Slice Profile and Width. Test Object #3 - "Slice B" is for assessing Slice Warp and Position. Test Object #4 - "Resolution" is for assessing Resolution by bar pattern and the Modulation Transfer Function. Test Object #5 - "Relaxation Times" is for meauring T1 & T2 Accuracy, Precision and Contrast. Test Object #6 - "Annulus" is the mounting system which is used to hold each of the above in place in the MRI scanner.

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