arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2407.07720eess.IVcs.CV
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利用尺度变异注意力进行小医学物体分割

Exploiting Scale-Variant Attention for Segmenting Small Medical Objects

Centre for Robotics and Automation, City University of Hong Kong(香港城市大学机器人与自动化中心);Department of Electronic Engineering, The Chinese University of Hong Kong(香港中文大学电子工程系)

Wei Dai, Rui Liu, Zixuan Wu, Tianyi Wu, Min Wang, Junxian Zhou, Yixuan Yuan, Jun Liu

AI总结:

本文提出SvANet,通过引入尺度变异注意力等模块,提升医学图像中小物体的分割精度。

摘要:

早期检测和准确诊断可以预测恶性疾病转化的风险,从而增加有效治疗的可能性。识别轻微综合征中的小病理区域是一种危险信号,是疾病早期诊断的基础。尽管深度学习算法,特别是卷积神经网络(CNNs),在分割医学物体方面显示出潜力,但分析医学图像中的小区域仍然具有挑战性。这种困难源于CNN中的卷积和池化操作的信息损失和压缩缺陷,随着网络加深,尤其是对于小医学物体而言,这些问题更加明显。为了解决这些挑战,我们提出了一种新的基于尺度变异注意力的网络(SvANet),用于准确分割医学图像中的小尺度物体。SvANet由尺度变异注意力、跨尺度指导、蒙特卡洛注意力和视觉Transformer组成,它整合了跨尺度特征并减轻压缩伪影,以增强小医学物体的辨别能力。定量实验结果表明,SvANet的性能优越,分别在肾肿瘤、皮肤病变、肝肿瘤、息肉、手术切除细胞、视网膜血管和精子的分割中,平均Dice系数达到96.12%、96.11%、89.79%、84.15%、80.25%、73.05%和72.58%,这些物体分别占KiTS23、ISIC 2018、ATLAS、PolypGen、TissueNet、FIVES和SpermHealth数据集图像面积的不到1%。

英文摘要:

Early detection and accurate diagnosis can predict the risk of malignant disease transformation, thereby increasing the probability of effective treatment. Identifying mild syndrome with small pathological regions serves as an ominous warning and is fundamental in the early diagnosis of diseases. While deep learning algorithms, particularly convolutional neural networks (CNNs), have shown promise in segmenting medical objects, analyzing small areas in medical images remains challenging. This difficulty arises due to information losses and compression defects from convolution and pooling operations in CNNs, which become more pronounced as the network deepens, especially for small medical objects. To address these challenges, we propose a novel scale-variant attention-based network (SvANet) for accurately segmenting small-scale objects in medical images. The SvANet consists of scale-variant attention, cross-scale guidance, Monte Carlo attention, and vision transformer, which incorporates cross-scale features and alleviates compression artifacts for enhancing the discrimination of small medical objects. Quantitative experimental results demonstrate the superior performance of SvANet, achieving 96.12%, 96.11%, 89.79%, 84.15%, 80.25%, 73.05%, and 72.58% in mean Dice coefficient for segmenting kidney tumors, skin lesions, hepatic tumors, polyps, surgical excision cells, retinal vasculatures, and sperms, which occupy less than 1% of the image areas in KiTS23, ISIC 2018, ATLAS, PolypGen, TissueNet, FIVES, and SpermHealth datasets, respectively.

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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