Table 4 Percent errors of the individual total vial activities and activity concentrations compared to the gold standard
From: Attenuation correction for PET/MRI to measure tracer activity surrounding total knee arthroplasty
Vial percent error versus standard | ||||||||
|---|---|---|---|---|---|---|---|---|
Map | Original | Simple tissue | Alternative model | Accurate model | ||||
Total activity (%) | Activity concentration (%) | Total Activity (%) | Activity concentration (%) | Total activity (%) | Activity concentration (%) | Total activity (%) | Activity concentration (%) | |
Reference vial | − 41.2 | − 40.2 | − 11.3 | − 9.62 | 2.59 | 4.56 | − 6.99 | − 5.20 |
Anterior vial | − 59.0 | − 59.0 | − 19.6 | − 18.5 | − 12.3 | − 11.17 | − 6.26 | − 5.05 |
Middle vial | − 83.3 | − 83.0 | − 44.1 | − 42.9 | 2.33 | 4.49 | − 16.8 | − 15.0 |
Posterior vial | − 66.8 | − 66.2 | − 42.8 | − 40.3 | − 1.66 | 2.63 | − 5.17 | − 1.02 |