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相关概念视频

Computed Tomography01:10

Computed Tomography

4.6K
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 III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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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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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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相关实验视频

Updated: Jul 19, 2025

Using Synchrotron Radiation Microtomography to Investigate Multi-scale Three-dimensional Microelectronic Packages
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来自第二代原型基光子计数计算机断层扫描系统的初始临床图像.

Hakan Almqvist1, Dominic Crotty2, Sven Nyren3

  • 1Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (H.A., F.A.-S., S.H.); Department of Radiology, Capio St Göran Hospital, Stockholm, Sweden (H.A.).

Academic radiology
|August 10, 2023
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概括

使用深探测器的新光子计数计算机断层扫描 (CT) 系统表明,它可用于例行临床成像. 该技术在标准患者辐射剂量下提供高空间和光谱分辨率.

关键词:
用光子计数的方式计数光子.PCCT是一种PCCT.频谱CT CT 的情况.

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科学领域:

  • 医学成像技术 医学成像技术
  • 放射学 放射学是一门学科.
  • 光子计数计算机断层扫描

背景情况:

  • 光子计数CT (PCCT) 系统比传统CT具有潜在的优势.
  • 第二代原型系统旨在平衡高空间和光谱分辨率.
  • 临床可行性需要在标准辐射暴露水平下进行评估.

研究的目的:

  • 评估第二代原型光子计数CT系统的可行性.
  • 评估其同时进行高空间和光谱分辨率成像的潜力.
  • 为了确定常规临床患者暴露水平的性能.

主要方法:

  • 使用了基于的原型光子计数探测器CT系统.
  • 从临床辐射剂量水平的志愿者实验对象获得的图像.
  • 使用光谱CT算法重建的图像用于各种临床任务.

主要成果:

  • 在重建图像中展示了超高的空间分辨率.
  • 清晰可视化了小结构和病理的细节.
  • 与高空间分辨率图像一起获得并发的光谱信息.

结论:

  • 在临床暴露水平下,使用新型深光子计数CT系统进行常规成像是可行的.
  • 深探测器为PCCT提供了一个平衡的方法.
  • 高准确度的光谱信息可以与高空间分辨率成像同时实现.