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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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Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
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相关实验视频

Updated: Jul 26, 2025

Simultaneous Brightfield, Fluorescence, and Optical Coherence Tomographic Imaging of Contracting Cardiac Trabeculae Ex Vivo
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Simultaneous Brightfield, Fluorescence, and Optical Coherence Tomographic Imaging of Contracting Cardiac Trabeculae Ex Vivo

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通过并行光谱编码进行增强光场断层扫描.

Zhaoqiang Wang1, Tzung K Hsiai1,2, Liang Gao1

  • 1Department of Bioengineering, University of California, Los Angeles, 410 Westwood Plaza, Los Angeles, California 90095, USA.

Optica
|June 16, 2023
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概括
此摘要是机器生成的。

这项研究引入了光场断层扫描 (LIFT) 的光谱编码,使得高速的千赫兹3D成像成为可能. 这种新方法提高了空间分辨率,并减少了用于捕捉快速动态的文物.

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Near Infrared Optical Projection Tomography for Assessments of &#946;-cell Mass Distribution in Diabetes Research
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Near Infrared Optical Projection Tomography for Assessments of β-cell Mass Distribution in Diabetes Research

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Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT
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Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT

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相关实验视频

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Near Infrared Optical Projection Tomography for Assessments of &#946;-cell Mass Distribution in Diabetes Research
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科学领域:

  • 光学和光子学 在光学和光子学.
  • 生物医学成像技术 生物医学成像技术
  • 计算成像技术的成像

背景情况:

  • 瞬间3D成像的瞬态动力学是至关重要的,但受到传统的高速摄像机的限制.
  • 光场断层扫描 (LIFT) 提供高速3D成像,但由于稀疏视图限制,其分辨率较低.

研究的目的:

  • 为了提高LIFT中的投影数量,而不会影响其快照能力.
  • 为了提高LIFT重建的空间分辨率和图像质量.

主要方法:

  • 实施光谱编码方案以增加LIFT中的投影数据.
  • 开发和应用用于图像重建的多通道压缩传感算法.

主要成果:

  • 实现了3D动态成像的千赫兹体积率.
  • 在LIFT中允许的投影数量显著增加.
  • 改进图像质量,增强空间分辨率和抑制别名化工件.

结论:

  • 频谱编码与LIFT和压缩传感相结合,可以实现高分辨率,高速的3D动态成像.
  • 开发的系统克服了LIFT.之前的解决方案限制.
  • 这种进步为观测快速的生物和物理过程开辟了新的可能性.