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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 for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

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Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
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Positron Emission Tomography01:29

Positron Emission Tomography

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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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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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Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Electron Microscope Tomography and Single-particle Reconstruction01:07

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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

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Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
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在心脏成像中的光子计数探测器计算断层扫描.

Simran P Sharma1,2, Marie-Julie D K Lemmens3,4,5, Martijn W Smulders3,4

  • 1Department of Radiology and Nuclear Medicine, Erasmus Medical Centre, University Medical Centre, Rotterdam, The Netherlands.

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概括

光子计数检测器CT (PCD-CT) 通过卓越的分辨率和光谱能力彻底改变了心脏成像. 这种先进的技术为评估冠状动脉疾病和心肌组织提供了一个全面的方法,有可能成为一种单一解决方案的成像模式.

关键词:
血管学 血管学 血管学心脏成像技术的心脏成像技术.冠状动脉疾病是一种冠状动脉疾病.断层扫描,X射线计算成像

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科学领域:

  • 医疗成像医学成像
  • 放射学 放射学是一门学科.
  • 心血管成像 - 心血管成像

背景情况:

  • 光子计数探测器计算机断层扫描 (PCD-CT) 代表了超越传统的能量整合探测器CT的重大技术飞跃.
  • PCD-CT提供了增强的空间分辨率,减少了文物和固有的光谱数据采集.

研究的目的:

  • 审查目前关于PCD-CT在心脏成像中的应用的文献.
  • 探索PCD-CT在冠状动脉疾病评估,斑块表征和心肌组织评估方面的潜在好处和局限性.

主要方法:

  • 关于心脏成像中的PCD-CT现有科学文献的叙述性综述.
  • 对专注于空间分辨率,文物减少,光谱成像和组织表征能力的研究进行分析.

主要成果:

  • PCD-CT显示出更准确的冠状动脉疾病评估的潜力,包括斑块表征和支架内光评估.
  • 通过定性晚期增强和定量细胞外体积测量,可以实现心肌纤维化改善的可视化.
  • PCD-CT可以将血管造影和组织表征整合到一个检查中,提供"一站式"解决方案.

结论:

  • 对于推进心脏成像,PCD-CT具有显著的前景,提供全面的诊断能力.
  • 进一步的大规模临床试验,协议标准化和成本效益分析是广泛临床采用所必需的.
  • PCD-CT被定位为集成心脏评估的有价值的未来模式.