Table 1.
Patient characteristics (n = 85).
Fig 1.
(a). Prostate-specific antigen (PSA) dynamics after carbon ion radiotherapy (CIRT) for all patients. The PSA dynamics in patients with biochemical relapse is indicated by the red line. No clinical recurrence was observed. (b). The average PSA dynamics in patients with or without PSA bounces. (c). The average PSA dynamics in patients with or without PSA failure.
Fig 2.
(a). ROC curve for the correlation between PSA bounce and age. The area under the ROC curve was 0.705. The cut-off value was 68 years, at which the sensitivity and specificity were 76.1 and 61.5%, respectively. (b). ROC curve for the correlation between PSA bounce and age. The area under the ROC curve was 0.844. The cut-off value was 65 years, at which the sensitivity and specificity were 77.9 and 87.5%, respectively.
Table 2.
Predictive significance of clinical factors for the occurrence of PSA bounce.
Fig 3.
Prostate-specific antigen (PSA) failure-free rate.
The 3-year PSA failure-free rate was 88.5%.
Table 3.
Characteristics of patients with PSA failure.
Table 4.
Predictive significance of clinical factors for the occurrence of PSA failure.