Cumulative sum analysis of the learning curve for CT-guided percutaneous lung biopsy
10.3969/j.issn.1008-794X.2025.07.018
- VernacularTitle:CT引导下经皮肺穿刺活检学习曲线累积和分析
- Author:
Yadan LI
1
;
Meng WANG
;
Kepu DU
;
Shuai LI
;
Fei GAO
;
Mengyu GAO
;
Qingbo HUANG
;
Lin CHEN
;
Zhigang ZHOU
Author Information
1. 450052 河南郑州 郑州大学第一附属医院放射科
- Keywords:
cumulative sum analysis;
percutaneous lung biopsy;
CT guidance;
learning curve
- From:
Journal of Interventional Radiology
2025;34(7):784-788
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the learning curve of CT-guided percutaneous lung biopsy.Methods Using cumulative sum(CUSUM)analysis method,the clinical data from 110 patients,who underwent CT-guided percutaneous lung biopsy performed by the same physician at the First Affiliated Hospital of Zhengzhou University of China between May 2024 and October 2024,were retrospectively analyzed.The CUSUM learning curve was fitted,and R2 was used to assess the goodness of fit.The baseline and perioperative data were compared between different stages of the learning curve so as to determine the number of accomplished surgical cases that was required for a physician to reach the proficiency stage from the learning stage in performing CT-guided percutaneous lung biopsy.Results Successful CT-guided percutaneous lung biopsy was accomplished in all patients,with a mean operation time of(20.2+3.4)minutes(range of 15-29 minutes).With the accumulation of surgical cases,the operation time showed a gradual downward trend.The learning curve was best fitted with a cubic equation,the equation was as follows:CUSUM(110)=0.000 3x3-0.081 3x2+5.597 9x+0.774 3(where x representing the number of cases),with a goodness-of-fit coefficient R2=0.991.The fitted curve reached its peak at the performance of the 46th case,which was used as the cutoff point to divide the learning curve into two phases.Compared with the learning phase,in the proficiency phase the incidence of complications was significantly lower(pneumothorax:18.8％vs 37.0％,P=0.033)and the mean operation time was obviously shorter[(18.33+2.31)min vs(22.80±3.02)min,P＜0.001].Conclusion Through precise CUSUM analysis of the learning curves obtained from 110 patients receiving CT-guided percutaneous lung biopsy,the results of this study indicates that it requires to accomplish 46 operations before a physician can skillfully master the technique of CT-guided percutaneous lung biopsy.
