arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1702.02741cs.CVstat.ML
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从超声图像自动估计胎儿腹围

Automatic Estimation of Fetal Abdominal Circumference from Ultrasound Images

National Institute for Mathematical Sciences(国家数学科学研究所);Yonsei University(延世大学);Yonsei University College of Medicine(延世大学医学院)

Jaeseong Jang, Yejin Park, Bukweon Kim, Sung Min Lee, Ja-Young Kwon, Jin Keun Seo

摘要:

超声诊断是妇产科常规使用的胎儿生物测量方法,由于其耗时的过程中,有很大的需求,自动估计。然而,超声图像的自动分析是复杂的,因为它们是患者特异性的、操作者依赖性的和机器特异性的。在各种类型的胎儿生物测量中,由于腹部与周围环境的对比度低,对比度不均匀以及与其他参数相比形状不规则,因此腹围(AC)的准确估计尤其难以自动执行,我们提出了一种通过专门设计的卷积神经网络(CNN)从二维超声数据自动估计胎儿AC的方法,其考虑了医生的决策过程、解剖结构和超声图像的特征。所提出的方法使用CNN分类超声图像(胃泡,羊水,脐静脉)和霍夫变换测量AC。我们测试所提出的方法,从56名孕妇获得的临床超声数据。实验结果表明,相对较小的训练样本,建议的CNN提供了足够的分类结果AC估计通过霍夫变换。所提出的方法自动估计AC从超声图像。该方法进行了定量评估,并显示在大多数情况下,即使是超声图像恶化的阴影伪影稳定的性能。作为我们验收检查的实验结果,专家1和专家2的准确度分别为0.809和0.771,而两个专家之间的准确度为0.905。然而,对于巨大胎儿,当羊水未被观察到或腹部区域变形时,不能正确估计AC。

英文摘要:

Ultrasound diagnosis is routinely used in obstetrics and gynecology for fetal biometry, and owing to its time-consuming process, there has been a great demand for automatic estimation. However, the automated analysis of ultrasound images is complicated because they are patient-specific, operator-dependent, and machine-specific. Among various types of fetal biometry, the accurate estimation of abdominal circumference (AC) is especially difficult to perform automatically because the abdomen has low contrast against surroundings, non-uniform contrast, and irregular shape compared to other parameters.We propose a method for the automatic estimation of the fetal AC from 2D ultrasound data through a specially designed convolutional neural network (CNN), which takes account of doctors' decision process, anatomical structure, and the characteristics of the ultrasound image. The proposed method uses CNN to classify ultrasound images (stomach bubble, amniotic fluid, and umbilical vein) and Hough transformation for measuring AC. We test the proposed method using clinical ultrasound data acquired from 56 pregnant women. Experimental results show that, with relatively small training samples, the proposed CNN provides sufficient classification results for AC estimation through the Hough transformation. The proposed method automatically estimates AC from ultrasound images. The method is quantitatively evaluated, and shows stable performance in most cases and even for ultrasound images deteriorated by shadowing artifacts. As a result of experiments for our acceptance check, the accuracies are 0.809 and 0.771 with the expert 1 and expert 2, respectively, while the accuracy between the two experts is 0.905. However, for cases of oversized fetus, when the amniotic fluid is not observed or the abdominal area is distorted, it could not correctly estimate AC.

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。

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