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相关概念视频

Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

371
IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
371
Imaging Studies I: Kidney, Ureter, and Bladder Studies01:28

Imaging Studies I: Kidney, Ureter, and Bladder Studies

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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...
284
Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

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The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
196
Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

1.1K
IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
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Urinary Tract Calculi VI: Surgical Management01:25

Urinary Tract Calculi VI: Surgical Management

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Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
384
Urinary Tract Calculi I: Introduction01:28

Urinary Tract Calculi I: Introduction

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Renal calculi, or kidney stones, are solid deposits of minerals and salts formed inside the kidneys. In medical terminology, "calculus" refers to the stone itself, while "lithiasis" describes the process of stone formation. Depending on their location within the urinary system, these stones may be classified as either urolithiasis, when situated within the urinary tract, or nephrolithiasis, when located within the kidneys. Each term signifies the specific impact of the stone.Predisposition...
411

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相关实验视频

Updated: Jan 17, 2026

Author Spotlight: Developing a Bedside Protocol for Kidney and Genitourinary Ultrasonography
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通过斑点X射线成像对结石进行分类.

Werneri A Lindberg1,2, Henning Richter3, Fayez Alfayez4

  • 1Department of Health Sciences and Technology, ETH Zürich, CH-8092 Zürich, Switzerland.

Physics in medicine and biology
|September 22, 2025
PubMed
概括

基于斑点的暗场X射线成像显示了对非侵入性分类尿路结石的前景. 这项研究发现周期性网格面膜最适合,为石头诊断中的临床应用铺平了道路.

关键词:
结石的识别 结石的识别非侵入性尿结石诊断诊断 尿结石诊断一次射击暗场X射线成像斑点面具的特性 斑点面具的特性

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科学领域:

  • 医疗成像医学成像
  • 生物物理学的生物物理.
  • 材料科学 材料科学 材料科学

背景情况:

  • 尿路结石疾病在全球影响了6%,复发率很高.
  • 准确的石头分类对于诊断和管理至关重要.
  • 目前的成像缺乏灵敏度和特异性,无法准确地分类石头.

研究的目的:

  • 评估定制的扩散器面罩和采集算法,以光斑为基础的暗场X射线成像.
  • 评估一次性暗场成像用于尿路结石分类的有效性.
  • 探索使用先进的X射线技术进行非侵入性尿路结石分类的潜力.

主要方法:

  • 定制扩散器口罩和ex vivo尿 पथ检索算法的系统比较.
  • 使用80kVpX射线能量的一次性暗场成像.
  • 经过评估的网格和定制的斑点口罩,具有最先进的检索算法.

主要成果:

  • 狗类酸表现出最明显的可见度对比差异 (32%).
  • 具有将石材分为三个组的潜力:酸,基于的酸,以及囊/struvite.
  • 周期性网格面膜是最合适的; 福克-普朗克检索推用于图像质量.

结论:

  • 基于斑点的暗场X射线成像为分类尿路结石提供了一种可行的非侵入性方法.
  • 周期性网格面膜和福克-普朗克检索显示出临床翻译的巨大潜力.
  • 这项研究为推进尿病管理中的X射线成像建立了技术基础.