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相关概念视频

X-ray Imaging01:24

X-ray Imaging

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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
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Semi-supervised YOLO-DEP for high-resolution X-ray component localization and counting.

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Improving the robustness of radiomic features to patient size variations in CBCT imaging for radiotherapy.

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相关实验视频

Updated: Sep 10, 2025

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
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X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

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基于实验室X射线源的并行幻影成像的概括

Nixi Zhao1,2,3, Junxiong Fang1,2,3, Jie Tang1,2,3

  • 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, People's Republic of China.

Journal of X-ray science and technology
|August 25, 2025
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种低成本,高分辨率的X射线并行影像技术, 这项突破使得先进的成像技术能够在廉价的设备上得到应用,

关键词:
无线影像成像压力传感器低剂量

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Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
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相关实验视频

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科学领域:

  • 物理
  • 影像科学
  • 材料科学

背景情况:

  • 幽灵成像使用光学路径之间的强度相关性重建图像.
  • 并行影像增强分辨率并减少测量数量.
  • 之前的X射线并行影像需要昂贵的同步辐射设施.

研究的目的:

  • 开发一个实用的,低成本的X射线平行影像方法,独立于同步辐射.
  • 用实验室设备展示高分辨率低剂量X射线成像的可行性.
  • 建立一个商业和实践应用平行影像的框架.

主要方法:

  • 采用便宜且易于获得的设备进行平行影像采集.
  • 使用实验室X射线光源进行成像实验.
  • 修改了现有的工业CT设备,用于并行影像设置.

主要成果:

  • 实现高分辨率的X射线平行幽灵成像,有效像素大小为8.03μm,图像大小为2880 × 2280.
  • 以极低的测量计数 (采样率为0.62%) 和最小剂量进行成像.
  • 只有40美元的总体实验费用, 展示了普遍性.

结论:

  • 使用实验室设备可以有效地进行X射线并行幽灵成像,从而消除了对同步仪器的需求.
  • 开发的方法为高分辨率,低剂量X射线成像提供了实用且具有成本效益的解决方案.
  • 这项工作为平行影像技术的商业化和广泛采用提供了一个全面的框架.