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Table 1 Patients’ characteristics

From: Conversion and validation of rectal constraints for prostate carcinoma receiving hypofractionated carbon-ion radiotherapy with a local effect model

Parameter Total N = 40
Gleason score  
 6 8 (20.0%)
 7 12 (30.0%)
 8–10 20 (50.0%)
T stage (AJCC 8th)  
 T2 33 (82.5%)
 T3 5 (12.5%)
 T4 1 (2.5%)
 aTx 1 (2.5%)
Risk group  
 Low 2 (5.0%)
 Intermediate 14 (35.0%)
 High 23 (57.5%)
 aUnknown 1 (2.5%)
Initial PSA  
 < 10 ng/mL 16 (40.0%)
 10–19.9 ng/mL 13 (32.5%)
 ≥ 20 ng/mL 11 (27.5%)
Parameter Volume (cc)
CTV/median (range, cc) 92.85 (48.08–164.94)
  ≤ 100.00 68.44 (48.08–94.5) (52.5%)
 > 100.00 121.37 (107.42–164.94) (47.5%)
Rectum/median (range, cc) 50.66 (34.59–75.29)
 ≤ 50.00 44.04 (34.59–49.89) (47.5%)
 > 50.00 56.19 (50.41–75.29) (52.5%)
  1. aOne patient received transurethral prostatic resection (TURP) before CIRT, therefore, his T stage and risk profile are unknown
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