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相关概念视频

Computed Tomography01:10

Computed Tomography

7.6K
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...
7.6K
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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相关实验视频

Updated: May 1, 2026

Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans
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Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans

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在CBCT中暂时骨图像质量:设备和协议变化.

Seyed Hossein Razavi1, Mohammad Poormohammadi1, Arezoo Ansarilari1

  • 1Department of Oral and Maxillofacial Radiology, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

Cochlear implants international
|March 29, 2025
PubMed
概括
此摘要是机器生成的。

这项研究评估了用于束计算机断层扫描 (CBCT) 骨成像的辐射协议. 最佳的方案因CBCT品牌而异,需要进一步研究以尽量减少患者的辐射剂量.

关键词:
时间骨,CBCT,辐射协议,图像质量,内耳,内耳.

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Author Spotlight: Advancing CBCT and Digital Dental Image Integration with AI-Assisted Digitization
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相关实验视频

Last Updated: May 1, 2026

Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans
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科学领域:

  • 放射学 放射学是一门学科.
  • 医疗成像医学成像
  • 牙科成像 牙科成像 牙科成像

背景情况:

  • 骨成像是常见的,越来越多地使用CBCT而不是CT.
  • 优化CBCT辐射协议对于诊断质量和患者安全至关重要.

研究的目的:

  • 为了确定不同CBCT设备间骨成像的最佳辐射条件.
  • 为了尽量减少患者的辐射剂量,同时保持诊断图像质量.

主要方法:

  • 在4个CBCT设备上使用6个辐射协议对一个干燥的人类头骨进行了成像.
  • 关键骨结构的图像质量由3名观察员使用4点级别来评估.
  • 统计分析包括卡帕系数,克鲁斯卡尔-瓦利斯和曼-惠特尼测试.

主要成果:

  • 对于Acteon和NewTom设备的协议之间平均得分没有显著差异.
  • 对于柯达设备,建议采用第1协议;对于骨成像设备的Planmeca设备,建议采用第3协议.

结论:

  • 对于骨成像的最佳辐射协议在CBCT品牌之间有所不同.
  • 需要进一步的研究,以建立普遍的最佳辐射条件,并减少社会辐射剂量.
  • CBCT的单边骨成像能力未得到充分利用.