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相关概念视频

Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

231
Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
231
Masking and Demasking Agents01:19

Masking and Demasking Agents

2.4K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
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相关实验视频

Updated: Jun 25, 2025

Protocol for the Evaluation of MRI Artifacts Caused by Metal Implants to Assess the Suitability of Implants and the Vulnerability of Pulse Sequences
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Protocol for the Evaluation of MRI Artifacts Caused by Metal Implants to Assess the Suitability of Implants and the Vulnerability of Pulse Sequences

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一种基于任务的交互式方法,用于避免CBCT中的金属文物.

Maximilian Rohleder1,2, Mareike Thies3, Sophie Riedl4

  • 1Pattern Recognition Lab, Friedrich-Alexander-University, Martenstraße 3, Erlangen, 91058, Germany. Maxi.Rohleder@fau.de.

International journal of computer assisted radiology and surgery
|May 23, 2024
PubMed
概括

这项研究引入了一种交互式方法,用于在手术内形光束CT扫描期间预测和可视化金属文物. 该方法显著提高了骨科手术的图像质量,允许临床医生选择最佳的扫描轨迹,帮助植入物放置验证.

关键词:
CT轨迹优化 CT轨迹优化圆光束CT CT 的情况.人与计算机的互动 人与计算机的互动避免金属工艺品的使用

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相关实验视频

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Protocol for the Evaluation of MRI Artifacts Caused by Metal Implants to Assess the Suitability of Implants and the Vulnerability of Pulse Sequences
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Handheld Metal Detector Screening for Metallic Foreign Body Ingestion in Children
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科学领域:

  • 医疗成像医学成像
  • 整形外科手术 整形外科手术
  • 放射学 放射学是一门学科.

背景情况:

  • 术内形光束CT (CBCT) 对于骨科和创伤手术中的3D验证至关重要.
  • 金属文物严重降低了CBCT图像质量,限制了临床效用.
  • 现有的金属工件避免 (MAA) 方法缺乏临床集成和工作流的兼容性.

研究的目的:

  • 在CBCT中开发一种用于预测和可视化金属工件的交互式方法.
  • 为了使临床医生能够根据文物分布选择最佳的扫描轨迹.
  • 为了提高MAA技术的临床适用性.

主要方法:

  • 一种新的方法来计算空间文物分布和对倾斜轨迹的校准强度.
  • 预测工件的交互可视化叠加在C-Arm倾斜上.
  • 在人类尸体研究中的评估,比较交互式与全球度量优化.

主要成果:

  • 全球指标和拟议的可视化都比标准扫描显著提高了图像质量.
  • 与全球指标相比,交互式可视化提供了优越的主观图像质量.
  • 该方法允许对特定任务进行优化,以避免在感兴趣的区域中出现人工物.

结论:

  • 开发了一种实用且有效的交互式MAA方法来减少金属文物.
  • 该方法提供了空间分辨的文物预测和校准的强度分级.
  • 这代表了迈向MAA临床实施的重要一步,以改善外科验证.