用动态磁共振成像和深度学习方法对尿管喷流进行定量分析
Mingyan Wu1, Wanning Zeng2, Yanbin Li3
1Children's Hospital of Fudan University, Shanghai, China; Central Research Institute, UIH Group, Shanghai, China.
Magnetic resonance imaging
|March 9, 2025
概括
这项研究开发了一种动态的MRU协议来捕获尿管喷流,以及一种深度学习方法来自动估计其频率和持续时间,为尿管周围静止提供了洞察力.
科学领域:
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 医疗成像医学成像
- 人工智能的人工智能
背景情况:
- 动态MR泌尿学 (MRU) 对于评估尿路功能至关重要.
- 量化尿路喷射特征对于理解膀动态和周围静止是非常重要的.
研究的目的:
- 开发一个优化的动态MRU协议,用于捕获尿管喷气.
- 创建一个深度学习模型,自动估计尿管喷射频率和持续时间.
主要方法:
- 优化成像切片方向和厚度,用于动态MRI.
- 开发和训练了一个U-Net深度学习模型,使用2529张图像进行尿管喷气检测.
- 在760张图像上验证了模型,达到84.9%的准确性.
主要成果:
- 确定了一种最优的协议,切片厚度为25毫米,面向为30度.
- 自动化方法估计尿管喷射频率为8.0 ± 1.4分钟-1和持续时间为7.3 ± 2.8秒.
- 估计的累积尿路喷射持续时间与膀膨胀有很强的相关性 (R=0.936).
结论:
- 开发的动态MRU协议和深度学习方法使尿管喷气的定量表征成为可能.
- 这种方法为评估尿管周立体和功能状态提供了有价值的数据.
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...
Imaging Studies IV: Magnetic Resonance Imaging
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,...
Urodynamic Studies: Uroflowmetry
Uroflowmetry is a non-invasive urodynamic test designed to measure various aspects of urination, including volume, flow rate, and the time to void. This test is crucial for diagnosing and assessing conditions such as bladder outlet obstruction, bladder dysfunction, incomplete bladder emptying, incontinence, and urinary tract blockages caused by benign prostatic hyperplasia (BPH) and urethral strictures.Pre-Test Instructions:Before a uroflowmetry test, patients are typically advised to drink...


