自动转移监督目标方法用于用CT成像对肺病变区域进行细分
Peng Du1, Xiaofeng Niu2, Xukun Li2
1Hangzhou AiSmartIoT Co., Ltd., Hangzhou, Zhejiang, China.
BMC bioinformatics
|September 4, 2023
概括
这项研究引入了一种半监督的深度学习方法,用于在CT扫描中对肺部感染进行细分,通过使用自动生成的精细标签来提高学习效率来提高准确性.
科学领域:
- 医疗成像医学成像
- 人工智能的人工智能
- 计算机辅助诊断 计算机辅助诊断
背景情况:
- 在CT图像中精确细分感染的肺部区域对于诊断和治疗至关重要.
- 传统的方法往往依赖于广泛的手动注释,这是耗时和劳动密集的.
- 开发自动化或半自动化方法可以显著提高效率和可扩展性.
研究的目的:
- 提出一种新的半监督双分支框架,用于自主识别和选择最佳目标,以在CT图像中对感染的肺部区域进行细分.
- 通过利用专家注释和自动生成,粗略注释的数据来提高学习效率.
- 为了提高医疗图像细分的深度学习模型的准确性.
主要方法:
- 设计了一个半监督的双分支框架,包含有限的专家注释数据和大量粗略注释数据 (使用Hu值进行细分).
- 在培训期间,使用Lovasz评分方法在弱势分支中动态切换和选择最佳监督目标.
- 这种方法使模型能够利用噪音标签进行初始定位,并使用更准确的数据逐步完善目标.
主要成果:
- 拟议的半监督双分支网络在内部基准上达到83.56±12.10%,在外部基准上达到82.67±8.04%的平均子相似系数 (DSC).
- 与没有额外样本的U-Net和平均教师算法相比,拟议的方法显示了DSC值的显著改善 (在内部和外部基准上分别高达13.54%和13.37%).
- 使用具有成本效益的伪标记样品显著提高了模型性能.
结论:
- 具有成本效益的伪标签样本有效地协助深度学习 (DL) 模型培训,优于仅在手动标签上训练的传统DL模型.
- 与现有的双分支结构相比,拟议的方法显示出更高的性能.
- 这种方法为医疗图像细分任务提供了可扩展和高效的解决方案.
相关概念视频
Computed Tomography
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Imaging Studies for Cardiovascular System V: CT
Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...


