Table 5 Percent errors of the individual total vial activities and activity concentrations compared to the reference vial
From: Attenuation correction for PET/MRI to measure tracer activity surrounding total knee arthroplasty
Total percent error versus reference | ||||||||
|---|---|---|---|---|---|---|---|---|
Map | Original | Simple tissue | Alternative model | Accurate model | ||||
Total activity (%) | Activity concentration (%) | Total activity (%) | Activity concentration (%) | Total activity (%) | Activity concentration (%) | Total activity (%) | Activity concentration (%) | |
Anterior vial | − 29.7 | − 31.4 | − 8.66 | − 9.86 | − 13.9 | − 15.05 | 1.50 | 0.164 |
Middle vial | − 70.9 | − 71.5 | − 35.4 | − 36.9 | 2.31 | 0.066 | − 8.23 | − 10.4 |
Posterior vial | − 71.5 | − 71.1 | − 33.2 | − 34.0 | − 0.675 | − 1.84 | 5.65 | 4.41 |