JW Pacific > Radiology Products > QA for MRI

MRI QA

MRI Quality Assurance Phantoms and Software Analysis are being offered individually (Options A and B) and as packages (Options C and D).

The Large MRI QA Phantom is suitable for scanners capable of all examinations, no matter how many modules are on your application. The Small MRI Phantom is suitable for scanners only capable of extremity exams.

The RIT Radia Diagnostic software automatically analyzes MR Images of the above phantoms in seconds. Providing reports on Localizer line length, geometric accuracy, resolution, slice thickness, slice position accuracy, Percent integral uniformity (with full statistics), Percent signal ghosting (with full statistics), Low contrast objects detected with contrast-to-noise reported for each object.


ACR MRI Small Phantom









The ACR MRI phantom is constructed of acrylate plastic, glass and silicone rubber. Ferromagnetic materials have been excluded. The unit is a cylinder 20.4 cm in diameter by 16.5 cm in length. The compact design allows placement in axial coronal, or sagittal orientation in almost all MRI head coils. Thus, tests can be conducted in all three major planes. There is a reference line down one side of the phantom. The phantom is filled with 10 millimolar (mmol) nickel chloride solution containing sodium chloride (45 mmol) to simulate biological conductivity. The contrast vial contains 20 mmol nickel chloride and 15 mmol sodium chloride solution providing a difference in T1 and T2 values. Actual values will depend on the field strength in use and the temperature of the phantom.


The ACR small MRI phantom is a short, hollow cylinder of acrylic plastic closed at both ends. The inside length is 100 mm; the inside diameter is 100 mm. It is filled with a solution of nickel chloride and sodium chloride: 10 mM NiCl2 and 0.45% by weight aqueous NaCl. The separate vial is filled with 20 mM NiCl2 but no aqueous NaCl.
There are seven quantitative tests can be made with this phantom and they are:

1. Geometric accuracy
2. High contrast spatial
    resolution
3. Slice thickness accuracy
4. Slice position accuracy
5. Image intensity uniformity
6. Percent signal ghosting
7. Low contrast object
    detectability


The Radia Diagnostic Auto Image QA software analyse the Large ACR MRI Phantom including the Localizer, Slices 1, 5, 7, 8, 9, 10 and 11. Each image analysis can be done within seconds.

Results can be printed, saved as pdf format, export to Excel, or export to RIT Trend Database.





The RIT Trend Database keeps all analyzed data. It tracks and displays trends for any variable on any saved test. Multiple Trend Database can be established at user's discretion.




The RIT Radia's RunQueueC. scripting feature provides fast, easy batch analysis that can be performed on entire directories of images in a single operation. After a simple setup establishing your personal protocols, choose image batches from one machine, a group of machines, or even machines located throughout a hospital system. Reports are automatically generated with pass/fails clearly indicated, and added to the RITtrend™ database which shows you image quality measurements over time. After your one-time setup, use it again and again. Or better yet, have someone else do it for you, again and again.

And let us not forget the all plastic level!


The Radia Diagnostic Auto Image QA software analyse the Large ACR MRI Phantom including the Localizer, Slices 1, 3, 4, 6 and 7. Each image analysis can be done within seconds.

Results can be printed, saved as pdf format, export to Excel, or export to RIT Trend Database.



The RIT Radia's



and


perform the same for all Radia software modules. Please refer to the left for details.

And let us not forget the all plastic level!