Knee Cartilage: Efficient and Reproducible Segmentation on High-Spatial-Resolution MR Images with the Semiautomated Graph-Cut Algorithm Method
Knee Cartilage: Efficient and Reproducible Segmentation on High-Spatial-Resolution MR Images with the Semiautomated Graph-Cut Algorithm Method
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DOI：
10.1148/radiol.2512081332
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发表时间：
2009-05-01
期刊：
影响因子：
19.7
通讯作者：
Bae, Kyongtae T.
中科院分区：
文献类型：
--
作者：
Shim, Hackjoon;Chang, Samuel;Bae, Kyongtae T.
这项符合HIPAA的研究免于机构审查委员会的批准，因为10个图像数据集在骨关节炎倡议数据库中被去识别，并且在没有访问任何临床信息的情况下进行了处理和分析。本研究的目的是前瞻性地评估半自动图形切割方法（SA方法）在膝关节软骨分割中的效率和可重复性，并将其性能与传统的手动描绘分割方法（M方法）进行比较。两名放射科医生在两个单独的会话中使用每种方法独立执行分割：他们对每三个切片执行M方法（第一和第二会话分别为M1和M2），对每个切片执行SA方法（第一和第二会话分别为SA 1和SA 2）。SA方法比M方法显着更有效（SA 1与M1的平均处理时间分别为53分钟和156分钟，SA 2与M2的平均处理时间分别为53分钟和118分钟; P < .001）和可重复性（SA方法与M方法的平均体积重叠率分别为94.3%和87.8%; P < .001）比M方法。
This HIPAA-compliant study was exempt from institutional review board approval because the 10 image data sets were deidentified in the Osteoarthritis Initiative database, and they were processed and analyzed without any clinical information being accessed. The purpose of this study was to prospectively evaluate the efficiency and reproducibility of the semiautomated graph-cut method (SA method) in the segmentation of knee cartilage and to compare its performance with that of the conventional manual delineation segmentation method (M method). Two radiologists independently performed segmentation with each method in two separate sessions: They performed the M method (M1 and M2 for the first and second sessions, respectively) for every third section and the SA method (SA1 and SA2 for the first and second sessions, respectively) for every section. The SA method was significantly more efficient (mean processing time, 53 minutes vs 156 minutes for SA1 vs M1 and 53 minutes vs 118 minutes for SA2 vs M2; P < .001) and reproducible (mean volume overlap, 94.3% vs 87.8% for the SA method vs the M method; P < .001) than the M method.