相关实验视频
Updated: Jul 24, 2025

09:30
Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease
Published on: December 18, 2016
19.6K
在慢性脏疾病中进行扩散权重,内不连贯运动和扩散曲解张量MRI成像:与组织学相关
Jie Zhu1, Aiqun Chen2, Jiayin Gao1
1Department of Radiology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, 100730, PR China.
Magnetic resonance imaging
|July 6, 2023
概括
先进的扩散MRI技术,包括扩散曲解张量成像 (DKTI),可以有效地评估慢性病 (CKD) 的严重程度. 关键的扩散参数与脏损伤和功能相关,表现优于标准指标.
科学领域:
- 放射学和成像学 放射学和成像学
- 腎臟病學 (nephrology) 是一種醫學.
- 生物医学工程 生物医学工程
背景情况:
- 慢性病 (CKD) 涉及逐渐的病理和功能衰退.
- 标准成像在量化CKD严重程度方面缺乏灵敏度.
- 先进的扩散MRI模型为非侵入性评估提供了潜力.
研究的目的:
- 评估扩散MRI参数 (DWI,IVIM,DTI,DKI) 与CKD病理/功能之间的相关性.
- 为了比较不同扩散模型在评估损伤中的有效性.
主要方法:
- 包括DWI,IVIM和DKTI在内的扩散MRI对79名CKD患者和10名对照进行.
- 分析了成像参数和脏活检得分 (GSI,TBI),eGFR和尿蛋白之间的相关性.
- 患者根据GSI和TBI得分分层分成组.
主要成果:
- 皮层和骨髓扩散参数 (D,MD) 和骨髓FA在CKD严重程度组之间显示出显著的差异.
- 这些参数与GSI和TBI得分有负相关性,表明扩散值较低时损伤增加.
- 皮层MD和D显示了对歧视性CKD严重程度的高AUC.
结论:
- 纠正的扩散指数 (皮层/髓层D和MD,髓层FA) 优于ADC, perfusion和kurtosis指数,用于评估CKD.
- 扩散MRI提供了一种敏感的,非侵入性的工具,用于评估CKD中的病理和功能.
相关概念视频
Imaging Studies I: Kidney, Ureter, and Bladder Studies
25
Kidney, Ureter, and Bladder (KUB) StudiesKidney, Ureter, and Bladder (KUB) studies are standard diagnostic imaging procedures used to assess the anatomy of the urinary system. They are commonly utilized for patients experiencing abdominal pain or urinary symptoms. By using a simple X-ray of the abdomen, KUB studies can reveal structural and pathological abnormalities within the kidneys, ureters, and bladder. These studies are particularly valuable in diagnosing kidney stones, urinary...
25
Magnetic Resonance Imaging
5.3K
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...
5.3K
Imaging Studies IV: Magnetic Resonance Imaging
31
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,...
31
Acute Kidney Injury IV: Diagnostic Studies and Prevention
37
Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...
37
Imaging Studies VII: Vascular Imaging
32
DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
32
Chronic Kidney Disease I: Introduction
42
Chronic Kidney Disease (CKD) arises when the kidneys progressively lose their ability to function, ultimately leading to end-stage kidney disease (ESKD). At this advanced stage, the kidneys can no longer filter waste or maintain essential body functions, requiring renal replacement therapy (RRT) through dialysis or a kidney transplant for survival.Early-stage chronic kidney disease and detection challengesIn CKD's early stages, symptoms often remain absent because healthy nephrons compensate...
42

