text_1: 阳性 MRI 结果 的 阳性 预测值 ( PPV1 ) 为 17.4% ( 95% CI , 14.2 ~ 21.2 ) , 活检 适应 证 的 阳性 预测值 ( PPV2 ) 为 23.9% ( 95% CI , 19.6 ~ 28.8 ) , 活检 的 阳性 预测值 ( PPV3 ) 为 26.3% ( 95% CI , 21.7 ~ 31.6 ) .
  
text_2: the positive predictive value of a positive MRI result ( PPV1 ) was 17.4 % ( 95 % CI , 14.2 to 21.2 ) , the positive predictive value of an indication for biopsy ( PPV2 ) was 23.9 % ( 95 % CI , 19.6 to 28.8 ) , and the positive predictive value of a biopsy ( PPV3 ) was 26.3 % ( 95 % CI , 21.7 to 31.6 ) .
  