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相关概念视频

Computed Tomography01:10

Computed Tomography

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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Imaging Studies III: Computed Tomography01:27

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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...
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Positron Emission Tomography01:29

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Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
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相关实验视频

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一个紧的时间域扩散光学断层扫描系统用于皮质神经成像.

Yaroslav Chekin1, Dakota Decker1, Hamid Dehghani1

  • 1Kernel, Culver City, CA, United States.

Imaging neuroscience (Cambridge, Mass.)
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概括

研究人员开发了一种全头时间域扩散光学断层扫描 (TD-DOT) 系统,以推进精确神经医学的神经成像. 这种新的系统克服了当前技术的局限性,为临床应用提供了更好的可扩展性和成本效益.

关键词:
绝对的大脑氧化度是绝对的从长椅到床边的位置.扩散光学断层扫描 (DFT) 是一种扩散光学断层扫描.一个便携式的神经成像设备.时间域NIRS.时间解决的NIRS.

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科学领域:

  • 神经科学是一个神经科学.
  • 生物医学工程 生物医学工程
  • 医疗成像医学成像

背景情况:

  • 神经成像对于精确的神经医学至关重要,但临床翻译面临着可扩展性和成本障碍.
  • 时域功能近红外光谱 (TD-fNIRS) 提供深度灵敏度和绝对属性分辨率,超过连续波方法.
  • 现有的TD-fNIRS系统的可用性有限,采样速度缓慢,覆盖范围稀疏,阻碍了广泛采用.

研究的目的:

  • 克服技术挑战,开发一个全头时间域扩散光学断层扫描 (TD-DOT) 系统.
  • 通过使用标准化协议来描述新型TD-DOT系统的性能.
  • 将开发的TD-DOT系统与现有最先进的系统进行比较,并展示其功能.

主要方法:

  • 开发一种全新的全头时间域扩散光学断层扫描 (TD-DOT) 系统.
  • 使用标准化协议进行系统表征,并与其他先进系统进行比较.
  • 在各种功能任务 (血液动力学,感觉,运动) 期间绘制皮质激活的系统性能评估.

主要成果:

  • 成功开发和描述了一个全头TD-DOT系统.
  • 与现有的最先进的神经成像系统相比,表现出卓越的性能.
  • 在各种认知和运动任务中有效地检索皮层激活图.

结论:

  • 开发的全头TD-DOT系统解决了当前神经成像技术的关键局限性.
  • 该系统的性能,信号质量和易用性为临床应用铺平了道路.
  • 这一进步为未来的精确神经医学研究和应用带来了巨大的潜力.