Recommended Quality Control Testing Program for MBI Systems
| Test | Equipment | Frequency | Acquisition details | Passing criterion |
| Uniformity | 57Co sheet source or fillable phantom | Daily | 7.5 million counts | ≤5% integral uniformity |
| Spatial resolution | 4-quadrant bar phantom | Semiannually | 7.5 million counts; phantom angled across field of view | Meets manufacturer’s specifications |
| Sensitivity | Flask | Annually | 120-s images | ≤10% difference between 2 detectors |
| Energy resolution | Point source | Annually | 2-keV energy windows; 1-min images | Full width at half maximum ≤ 10% |
| Lesion contrast | Contrast-detail phantom | Quarterly | 1 million counts; images at 3 depths | CNR > 3; count number of visible lesions at each depth |
* All tests should be performed at acceptance testing and after major service work.
CNR = contrast-to-noise ratio.