Table 1.
Percentage difference in organ 90Y-Zevalin residence time estimates for the simple planar and hybrid methods. [For each patient, the percentage difference was calculated as (planar-hybrid)∕hybrid∗100%. The mean percentage error and the mean percentage standard deviation were then computed. Negative signs indicate underestimation compared to the hybrid method.]
| Patient No. | Heart | Lungs | Liver | Kidneys | Spleen |
|---|---|---|---|---|---|
| 1 | 21.73% | 15.70% | −29.09% | 80.93% | 2.37% |
| 2 | 9.54% | 22.84% | −4.77% | 31.49% | 23.28% |
| 3 | 403.49% | 201.50% | 14.61% | 68.16% | −15.66% |
| 4 | 22.59% | 24.78% | −16.51% | 48.72% | 21.86% |
| 5 | 69.40% | 26.92% | −5.71% | 58.87% | 8.91% |
| 6 | 68.74% | 59.98% | −21.02% | 207.02% | 50.95% |
| 7 | −8.38% | 33.65% | −33.15% | 79.62% | −35.56% |
| 8 | 96.49% | 17.82% | 4.98% | 103.31% | 15.05% |
| 9 | 11.51% | −20.91% | −25.80% | 89.26% | 10.80% |
| 10 | 33.39% | 27.12% | −8.18% | 135.21% | 22.70% |
| 11 | 6.91% | 16.71% | −7.04% | 76.67% | 3.60% |
| 12 | 34.71% | −17.60% | −0.30% | 28.48% | 38.74% |
| 13 | 53.59% | 37.01% | −14.96% | 88.34% | −0.86% |
| 14 | 1.79% | 33.64% | −15.94% | 46.20% | 3.41% |
| 15 | −14.11% | −3.57% | −28.77% | 23.41% | 6.30% |
| 16 | 1.63% | −35.32% | −39.46% | −6.06% | 282.51% |
| 17 | 36.20% | −10.81% | −70.08% | 90.98% | 7.06% |
| 18 | 8.14% | 6.97% | −18.37% | 58.74% | 17.33% |
| Mean±standard deviation | (47.63±93.59)% | (24.25±50.21)% | (−17.75±19.06)% | (72.74±47.18)% | (25.71±66.82)% |