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相关概念视频

Rise of Liquid in a Capillary Tube01:18

Rise of Liquid in a Capillary Tube

When very thin cylindrical tubes, called capillaries, are dipped in a liquid, the liquid rises or falls in the tube compared to the surrounding liquid. This phenomenon is called capillary action. Capillary action occurs due to the combination of two opposing forces: the cohesive forces of the liquid, which cause it to stick to itself and form a rounded shape, and the adhesive forces between the liquid and the walls of the container, which cause the liquid to be attracted to the container walls.
Sampling Methods: Sample Types01:18

Sampling Methods: Sample Types

Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
Gas Solubility01:31

Gas Solubility

Gas solubility in liquids forms liquid-gas solutions, such as soft drinks, where carbon dioxide is dissolved in water, and the ocean, where the solubility of oxygen and carbon dioxide supports marine life. The ability of oceans to dissolve gases impacts weather conditions in the troposphere.However, gas-liquid interactions vary. For instance, hydrogen chloride gas is highly soluble in water, while oxygen's solubility is much lower. Because these solutions are non-ideal, Raoult’s law, which...
Two Components: Liquid–Liquid Systems01:27

Two Components: Liquid–Liquid Systems

A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...

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相关实验视频

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Detection of Cell-Free DNA in Blood Plasma Samples of Cancer Patients
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关于液体活检的最新情况

Marius E Mayerhoefer1,2, Andreas Kienzle3,4, Sungmin Woo1

  • 1Department of Radiology, NYU Grossman School of Medicine, NYU Langone Health, 660 First Ave, New York, NY 10016.

Radiology
|June 17, 2025
PubMed
概括
此摘要是机器生成的。

液体活检是一种使用血液或尿液的微创检测,可检测癌症标志物. 它对早期检测,治疗监测和预测各种癌症的结果充满希望.

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科学领域:

  • 在瘤学瘤学.
  • 分子诊断学 分子诊断
  • 生物标志物发现发现

背景情况:

  • 液体活检为检测体液中的瘤衍生物质提供了一种微创方法.
  • 它是传统组织活检的经济有效替代品,特别是用于连续监测.
  • 关键分析物包括无细胞和循环瘤DNA,这对于癌症管理至关重要.

研究的目的:

  • 审查癌症检测和管理液体活检应用的最新进展.
  • 突出临床试验和液体活检测试验的监管批准的发现.
  • 讨论在瘤学中液体活检的临床实施挑战.

主要方法:

  • 关于瘤学中的液体活检现有文献的综述.
  • 对涉及液体活检的里程碑式临床试验的研究结果的分析.
  • 检查美国监管机构对液体活检作为辅助诊断的批准.

主要成果:

  • 液体活检检测瘤衍生分析物在小样本体积 (例如,10毫升血液/尿液) 中.
  • 它在癌症查,残留疾病评估和结果预测方面显示出潜力.
  • 与RECIST标准相比,液体活检可以提供较早的治疗反应检测.

结论:

  • 液体活检是癌症患者全身瘤检查的宝贵工具.
  • 它的应用特别在淋巴瘤,乳腺癌,前列腺癌和黑色素瘤中得到了注意.
  • 解决当前的挑战对于液体活检在临床上得到广泛采用至关重要.