arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.13452cs.CV
收藏

通过从局部解剖学区域学习来改进骨龄评估

Improve bone age assessment by learning from anatomical local regions

Peking University(北京大学);Yizhun Medical AI Co., Ltd(一准医疗人工智能有限公司)

Dong Wang, Kexin Zhang, Jia Ding, Liwei Wang

摘要:

骨龄评估(BAA)是一种重要的影像学检查方法,旨在评价人体骨骼的生物学和结构成熟度。在临床实践中,Tanner和Whitehouse(TW 2)方法是放射科医生进行BAA广泛使用的方法。TW 2方法将手部分割为感兴趣区域(ROI),并分别分析每个解剖ROI以估计骨龄。由于考虑了局部信息的分析,TW 2方法在实际应用中具有较高的精度。遵循TW 2的精神,我们提出了一种新的模型,称为解剖局部感知网络(ALA-Net)的自动骨龄评估。在ALA-Net中,引入解剖局部提取模块来学习手部结构并提取局部信息。此外,我们设计了一个解剖补丁训练策略,在训练过程中提供额外的正则化。我们的模型可以检测解剖感兴趣区和估计骨龄联合在一个端到端的方式。实验结果表明,我们的ALA-Net在公共可用的RSNA数据集上实现了3.91平均绝对误差(MAE)的新的最先进的单模型性能。由于我们的模型的设计与公认的TW 2方法非常一致,因此对于临床使用来说,它是可解释的和可靠的。

英文摘要:

Skeletal bone age assessment (BAA), as an essential imaging examination, aims at evaluating the biological and structural maturation of human bones. In the clinical practice, Tanner and Whitehouse (TW2) method is a widely-used method for radiologists to perform BAA. The TW2 method splits the hands into Region Of Interests (ROI) and analyzes each of the anatomical ROI separately to estimate the bone age. Because of considering the analysis of local information, the TW2 method shows accurate results in practice. Following the spirit of TW2, we propose a novel model called Anatomical Local-Aware Network (ALA-Net) for automatic bone age assessment. In ALA-Net, anatomical local extraction module is introduced to learn the hand structure and extract local information. Moreover, we design an anatomical patch training strategy to provide extra regularization during the training process. Our model can detect the anatomical ROIs and estimate bone age jointly in an end-to-end manner. The experimental results show that our ALA-Net achieves a new state-of-the-art single model performance of 3.91 mean absolute error (MAE) on the public available RSNA dataset. Since the design of our model is well consistent with the well recognized TW2 method, it is interpretable and reliable for clinical usage.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑