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Learning Curve of C-Arm Cone-beam Computed Tomography Virtual Navigation-Guided Percutaneous Transthoracic Needle Biopsy
Korean Journal of Radiology ; : 844-853, 2019.
Article in English | WPRIM | ID: wpr-741448
ABSTRACT

OBJECTIVE:

To evaluate the learning curve for C-arm cone-beam computed tomography (CBCT) virtual navigation-guided percutaneous transthoracic needle biopsy (PTNB) and to determine the amount of experience needed to develop appropriate skills for this procedure using cumulative summation (CUSUM). MATERIALS AND

METHODS:

We retrospectively reviewed 2042 CBCT virtual navigation-guided PTNBs performed by 7 novice operators between March 2011 and December 2014. Learning curves for CBCT virtual navigation-guided PTNB with respect to its diagnostic performance and the occurrence of biopsy-related pneumothorax were analyzed using standard and risk-adjusted CUSUM (RA-CUSUM). Acceptable failure rates were determined as 0.06 for diagnostic failure and 0.25 for PTNB-related pneumothorax.

RESULTS:

Standard CUSUM indicated that 6 of the 7 operators achieved an acceptable diagnostic failure rate after a median of 105 PTNB procedures (95% confidence interval [CI], 14–240), and 6 of the operators achieved acceptable pneumothorax occurrence rate after a median of 79 PTNB procedures (95% CI, 27–155). RA-CUSUM showed that 93 (95% CI, 39–142) and 80 (95% CI, 38–127) PTNB procedures were required to achieve acceptable diagnostic performance and pneumothorax occurrence, respectively.

CONCLUSION:

The novice operators' skills in performing CBCT virtual navigation-guided PTNBs improved with increasing experience over a wide range of learning periods.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Pneumothorax / Biopsy, Needle / Retrospective Studies / Cone-Beam Computed Tomography / Learning Curve / Learning / Lung / Needles Type of study: Observational study Language: English Journal: Korean Journal of Radiology Year: 2019 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Pneumothorax / Biopsy, Needle / Retrospective Studies / Cone-Beam Computed Tomography / Learning Curve / Learning / Lung / Needles Type of study: Observational study Language: English Journal: Korean Journal of Radiology Year: 2019 Type: Article