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Decline of PSA, ALP, and aBSI by Number of 223Ra Injections
| Doses of 223Ra | PSA decline | ALP decline | aBSI decline |
| 1–2 (n = 9) | 0/9 (0%) | 6/9 (67%) | 1/9 (11%) |
| 3–4 (n = 18) | 1/18 (5%) | 14/18 (78%) | 2/18 (11%) |
| 5–6 (n = 40) | 8/40 (20%) | 34/40 (85%) | 21/40 (53%) |
| Total | 9/67 (13%) | 54/67 (80%) | 24/67 (36%) |
n = 67.
