手术过程模型知识获取的验证
Validation of knowledge acquisition for surgical process models.
作者信息
Neumuth Thomas, Jannin Pierre, Strauss Gero, Meixensberger Juergen, Burgert Oliver
机构信息
University of Leipzig, Innovation Center Computer Assisted Surgery, Semmelweisstr. 14, D-04103 Leipzig, Germany.
出版信息
J Am Med Inform Assoc. 2009 Jan-Feb;16(1):72-80. doi: 10.1197/jamia.M2748. Epub 2008 Oct 24.
OBJECTIVE
Surgical Process Models (SPMs) are models of surgical interventions. The objectives of this study are to validate acquisition methods for Surgical Process Models and to assess the performance of different observer populations.
DESIGN
The study examined 180 SPM of simulated Functional Endoscopic Sinus Surgeries (FESS), recorded with observation software. About 150,000 single measurements in total were analyzed.
MEASUREMENTS
Validation metrics were used for assessing the granularity, content accuracy, and temporal accuracy of structures of SPMs.
RESULTS
Differences between live observations and video observations are not statistically significant. Observations performed by subjects with medical backgrounds gave better results than observations performed by subjects with technical backgrounds. Granularity was reconstructed correctly by 90%, content by 91%, and the mean temporal accuracy was 1.8 s.
CONCLUSION
The study shows the validity of video as well as live observations for modeling Surgical Process Models. For routine use, the authors recommend live observations due to their flexibility and effectiveness. If high precision is needed or the SPM parameters are altered during the study, video observations are the preferable approach.
目的
手术过程模型（SPMs）是手术干预的模型。本研究的目的是验证手术过程模型的获取方法，并评估不同观察人群的表现。
设计
该研究检查了180个用观察软件记录的模拟功能性鼻内镜鼻窦手术（FESS）的手术过程模型。总共分析了约150,000次单次测量。
测量
使用验证指标来评估手术过程模型结构的粒度、内容准确性和时间准确性。
结果
实时观察和视频观察之间的差异无统计学意义。具有医学背景的受试者进行的观察比具有技术背景的受试者进行的观察结果更好。粒度重建的正确率为90%，内容重建的正确率为91%，平均时间准确性为1.8秒。
结论
该研究表明视频以及实时观察对于构建手术过程模型的有效性。对于常规使用，作者推荐实时观察，因为其具有灵活性和有效性。如果需要高精度或在研究过程中改变了手术过程模型参数，视频观察是更可取的方法。
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