H:M and Washout Rates for Optimistic and Pessimistic Approaches to Region-of-Interest Placement
Parameter | Whole heart/upper mediastinum | Whole heart/lower mediastinum | Regional heart/upper mediastinum | Regional heart/lower mediastinum |
Early H:M | 2.15 | 1.66 | 2.65 | 2.05 |
Delayed H:M | 2.21 | 1.65 | 2.55 | 1.90 |
Heart Washout | 34.2% | 34.2% | 38.3% | 38.3% |
Tabulated data show some variability; however, best and worst cases are consistent with low-risk H:M and abnormal washout.