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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 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

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A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
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评估带状和冠状动脉病理:基于计算机断层扫描的规范化方法.

Jannik Geier1, Nikolai Spuck2, Franz-Josef Kramer1

  • 1Department of Oral and Cranio-Maxillo and Facial Plastic Surgery, University Clinic Bonn, Bonn.

The Journal of craniofacial surgery
|January 12, 2026
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种基于CT的方法,以使下带 (CoP) 和冠状腺 (CrP) 过程长度正常化. 该协议有效地区分正常变异和特定的下病理,如增生和再吸收.

关键词:
冠状体工艺是一个冠状体工艺.下状状带 (Mandibular condyle) 是一个下的增生症是下的增生.下巴形态测量 下巴形态测量下巴吸收再吸收方式

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A Morphometric and Cellular Analysis Method for the Murine Mandibular Condyle
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相关实验视频

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科学领域:

  • 牙科 牙科是指牙科的专业.
  • 放射学 放射学是一门学科.
  • 人体解剖学 解剖学 解剖学

背景情况:

  • 部过程形态表现出显著的个体间变异性.
  • 在标准成像中,区分下过程中的生理变异和病理变化可能是具有挑战性的.
  • 下巴解剖学的定量评估有助于诊断和治疗规划.

研究的目的:

  • 开发和验证一个基于计算机断层扫描 (CT) 的正常化协议,用于下带 (CoP) 和冠状腺 (CrP) 过程.
  • 评估正常化比率是否可以从正常变异中区分特定的下病理.
  • 为了确定标准化CoP和CrP长度的参考值.

主要方法:

  • 对251名健康个体 (502名半) 的CT扫描进行了回顾性分析,以确定参考值.
  • 作为参考地标的后高度 (PMH) 的定义.
  • 将CoP和CrP长度标准化为PMH的测量 (CoP/PMH,CrP/PMH比率).
  • 在冠状腺增生症,状腺增生症和状腺再吸收的患者组中评估正常化比率.
  • 使用线性混合效应模型进行统计分析,以检查病理与正常化比率之间的关联.

主要成果:

  • 在对照组中,正常化的CoP/PMH和CrP/PMH比率显示出狭窄的预测间隔和定义的参考值.
  • 冠状腺增生显示出显著增加的CRP/PMH比率.
  • 状细胞增生与增加的CoP/PMH比率有关.
  • 淋巴管再吸收与降低COP/PMH比率有关.
  • 在正常化比率中观察到明显的,病理特异性的模式.

结论:

  • 开发的基于CT的规范化协议有效地减少了测量下过程中的个人间变异性.
  • 在常规CT扫描中,该协议成功地将生理变异与病理变化 (增生,再吸收) 区分开来.
  • 这种定量方法适用于CT和束CT (CBCT),可能有助于早期诊断和监测下变化.