从电阻断层扫描 (EIT) 图像进行解剖学过渡性磁共振成像 (MRI) 的交叉模式生成学习框架
Zuojun Wang1, Mehmood Nawaz2, Sheheryar Khan3
1The Department of Diagnostic Radiology, The University of Hong Kong, Hong Kong.
概括
这项研究引入了一种新的生成学习框架,将低分辨率电阻断层扫描 (EIT) 图像转换为高分辨率磁共振成像 (MRI) 手腕图像. 级联CycleGAN模型显著提高了骨检测准确度,减少了错误,证明了有效的交叉模式图像生成.
科学领域:
- 医疗成像医学成像
- 人工智能的人工智能
- 生物医学工程 生物医学工程
背景情况:
- 磁共振成像 (MRI) 提供了高分辨率的解剖细节,但可能是昂贵和耗时的.
- 电阻断层扫描 (EIT) 提供了一种潜在的更容易获得的成像方法,但通常会产生更低的分辨率.
- 弥合EIT和MRI之间的解决差距对于提高诊断能力至关重要.
研究的目的:
- 开发和评估一种跨模式的生成学习框架,用于从低分辨率EIT数据中合成高分辨率MRI图像.
- 为了研究一个级联循环生成对抗网络 (CycleGAN) 模型对此图像转换任务的有效性.
- 评估EIT多频输入对生成的MRI样式解剖参考的准确性的影响.
主要方法:
- 设计了一个级联的CycleGAN模型,集成EIT数据收集,使用MRI图像进行域调整和交叉模式生成.
- 多频 EIT 数据 (70 kHz,140 kHz,200 kHz) 和T1加权手腕MRI图像从19名健康志愿者获得.
- 拟议的级联CycleGAN被训练并与端到端CycleGAN和Pix2Pix模型进行比较,使用713张配对的EIT-MRI图像.
主要成果:
- 与端到端的CycleGAN (0.68) 和Pix2Pix (0.70) 相比,级联式CycleGAN实现了更高的骨检测准确度 (0.97).
- 多频EIT输入将MRI式解剖参考的正常化根平均平方误差从67.9%±12.7%降低到61.4%±8.8%.
- 该框架成功地从EIT图像中生成了MRI风格的解剖参考,减少了与骨相关的错误和良好的准确性.
结论:
- 拟议的交叉模式生成学习框架有效地从EIT数据中合成高分辨率的MRI样式图像.
- 级联式CycleGAN架构在解剖学准确度方面取得了显著的改进,特别是在骨结构划分方面.
- 这种方法有望提高EIT在临床环境中的实用性,通过提供通常在MRI中看到的详细解剖背景.
相关概念视频
Imaging Studies I: CT and MRI
281
Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
281
Imaging Studies IV: Magnetic Resonance Imaging
27
Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
27
Magnetic Resonance Imaging
5.2K
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...
5.2K
Imaging Studies III: Computed Tomography
28
DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
28
Imaging Studies II: Positron Emission Tomography and Scintigraphy
157
Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Fundamental Principles of PET
157
Imaging Studies for Cardiovascular System IV: CMRI
61
Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
61


