COVID-19肺炎胸部X射线模式合成通过稳定的扩散.
Zhaohui Liang1, Zhiyun Xue1, Sivaramakrishnan Rajaraman1
1Computational Health Research Branch, National Library of Medicine, NIH.
概括
这项研究对稳定的扩散模型进行了微调,以生成高分辨率胸部X射线图像的COVID-19肺炎与肺. 之前的保存技术显著提高了合成图像质量和分类准确性.
科学领域:
- 医疗成像医学成像
- 人工智能的人工智能
- 计算机视觉 计算机视觉
背景情况:
- COVID-19肺炎经常导致双边肺,这是胸部X射线中的关键发现.
- 合成现实的医疗图像对于增强数据集和训练AI模型至关重要.
研究的目的:
- 微调稳定的扩散模型以产生高分辨率 (512x512) 胸部X射线图像,描绘双侧肺.
- 在图像合成中评估特定类别的先前保存策略的有效性.
- 将拟议方法的性能与WGAN和DDIM等传统技术进行比较.
主要方法:
- 微调稳定的扩散模型,使用特定类的先前保存策略.
- 使用来自MIDRC数据集的300个正面和400个负面的胸部X射线图像.
- 合成图像与双边肺,表明COVID-19肺炎.
- 通过使用Frechet Inception Distance (FID) 和Kernel Inception Distance (KID) 进行合成图像质量的比较.
- 使用训练有素的视觉变压器 (ViT) 评估分类性能.
主要成果:
- 微调的稳定扩散模型实现了卓越的图像合成质量,FID为9.2158和KID为0.0818.
- 与WGAN和DDIM生成的图像相比,合成图像表现明显更好.
- 一个视觉变压器 (ViT) 使用合成图像实现了高分类精度 (0.9975),精度 (1.0),和回忆 (0.9950).
结论:
- 稳定扩散模型,当精心调整和事先保存时,可以有效地合成高质量,高分辨率的胸部X射线图像.
- 这种技术需要有限数量的真实图像和文本提示以提供指导.
- 合成的图像适用于训练AI模型,改善COVID-19肺炎等疾病的诊断能力.
更多相关视频
02:09Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function
Published on: April 12, 2024
503
08:23Author Spotlight: Advancing Lung Disease Research with Free-Breathing Hyperpolarized Xenon-129 MRI
Published on: November 10, 2023
519
相关概念视频
Imaging Studies for Cardiovascular System III: X-Ray
113
The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
113
Pneumothorax-II
107
Pneumothorax is a medical condition defined by the buildup of air in the pleural space between the lungs and the chest wall. This accumulation of air can lead to partial or complete lung collapse, resulting in a range of clinical manifestations. Understanding the clinical presentation and effective management strategies is crucial for healthcare professionals in providing timely and appropriate care to individuals with pneumothorax.
Clinical Manifestations:
Clinical Manifestations:
107
Pneumonia III: Complications and Assessment
123
Pneumonia poses the potential for numerous complications that warrant consideration. These complications include the following:
123
Pneumonia II: Pathophysiology
189
The pathophysiology of pneumonia involves the following steps:
189
Radiological Investigation III: Pulmonary Angiogram and PET Scan
73
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
73
X-ray Imaging
5.2K
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
5.2K
