在脑MRI上检测瘤的域内转移学习策略
Duygu Sinanc Terzi1, Nuh Azginoglu2
1Department of Computer Engineering, Amasya University, Amasya 05100, Turkey.
Diagnostics (Basel, Switzerland)
|June 28, 2023
概括
使用医疗图像数据集的转移学习显著优于用于医疗物体检测的自然图像数据集,显示出更好的成功和趋同. 域内转移学习被证明比跨域方法更有效,即使数据较少.
科学领域:
- 医疗成像医学成像
- 计算机视觉 计算机视觉
- 深度学习 (Deep Learning) 是一种深度学习.
背景情况:
- 转移学习对于医疗成像等数据稀缺领域至关重要.
- 自然图像数据集在医学领域的预培训中的有效性仍在争论中.
- 转移学习策略的定量比较对于医疗物体检测是必要的.
研究的目的:
- 用自然与医疗图像数据集量化比较用于医疗物体检测的转移学习.
- 评估不同重量初始化方法用于转移学习.
- 评估数据增强对转移学习绩效的影响.
主要方法:
- 使用Mask R-CNN架构进行对象检测和细分.
- 雇佣的MS COCO (自然) 和BraTS 2020 (医疗) 数据集用于预培训.
- 加齐大脑2020数据集作为医疗物体检测的目标.
- 对比了五种不同的体重初始化策略.
主要成果:
- 医学影像预训练比自然影像预训练获得了10%的更高成功率和24%的更好的收率.
- 使用MS COCO或随机权重转移学习的表现与数据增强类似.
- 域内转移学习的效率高于跨域转移学习,无论数据量如何.
结论:
- 在域内转移学习,特别是医疗数据集,对于医疗对象检测任务是优越的.
- 介绍了Gazi Brains 2020数据集,用于在脑MRI分析中进行域内转移学习.
- 深度神经网络受益于同一领域内的知识传输,以改善医疗图像分析.
相关概念视频
Magnetic Resonance Imaging
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Brain Imaging
Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).


