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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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Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
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相关实验视频

Updated: Jul 11, 2025

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
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Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies

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在一个质子计算机断层扫描模拟框架中探索可微分性的探索.

Max Aehle1, Johan Alme2, Gergely Gábor Barnaföldi3

  • 1Chair for Scientific Computing, University of Kaiserslautern-Landau, D-67663 Kaiserslautern, Germany.

Physics in medicine and biology
|November 10, 2023
PubMed
概括

来自质子计算机断层扫描 (pCT) 模拟的衍生信息显示,对工程设计和不确定性量化有希望. 然而,基于模型的代重建和蒙特卡洛代码的显著跳跃限制了实际应用.

关键词:
算法差异化的算法差异化基于模型的代重建.优化的优化优化优化.质子计算机断层扫描 (PCT) 是一种计算机断层扫描.不确定性量化不确定性量化

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相关实验视频

Last Updated: Jul 11, 2025

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Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography

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科学领域:

  • 医学物理 医学物理
  • 计算科学 计算科学
  • 软件工程 软件工程 软件工程

背景情况:

  • 算法衍生使得基于梯度的优化和计算机模拟中的不确定性定量化成为可能.
  • 这些基于导数的方法的有效性取决于软件的"良好线性化"性质.
  • 质子计算机断层扫描 (pCT) 模拟越来越多地被使用,需要评估它们是否适合基于衍生品的分析.

结论:

  • 现有的MC和MBIR代码需要适应更顺的函数计算,以实现基于衍生品的应用程序.
  • 介绍了一种平滑MBIR功能的方法; MC代码适应需要进一步研究.
  • 追踪算法的非可区分性质需要研究替代模型.