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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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Four-Dimensional CT Analysis Using Sequential 3D-3D Registration
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使用以骨为中心的坐标系统对狗骨进行三维计算机断层角度测量.

Andreas Brühschwein1, Bronson Schmitz1, Martin Zöllner1

  • 1Clinic of Small Animal Surgery and Reproduction, Centre of Veterinary Clinical Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany.

Frontiers in veterinary science
|June 16, 2023
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概括

这项研究引入了一种新的3DCT技术,用于准确测量狗骨扭转和角. 该方法精确且独立于定位,可以更好地评估狗的部形.

关键词:
三维坐标系统的3D坐标系统角度测量角度测量方法这是一个角形变形.计算机断层扫描 (CT) 是一种计算机断层扫描.狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗狗提比亚 提比亚 提比亚 是一个扭力扭力扭力扭力扭力扭力扭力扭力瓦鲁斯瓦鲁斯 (Varus Varus) 是一个

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科学领域:

  • 兽医辐射学 兽医辐射学
  • 骨科生物力学 骨科生物力学
  • 比较解剖学的比较解剖学

背景情况:

  • 传统上,对犬部对齐的评估依赖于二维测量,这对于评估部扭动来说是具有挑战性的.
  • 准确测量椎和扭曲对于诊断和管理狗的骨科疾病至关重要.

研究的目的:

  • 开发和评估一种新的计算机断层扫描 (CT) 技术,用于真正的三维 (3D) 测量犬骨和扭转角度.
  • 确保开发的CT技术独立于患者的位置.

主要方法:

  • 一个以骨为中心的3D笛卡尔坐标系在狗骨的CT扫描上建立了.
  • 使用3D坐标和几何定义计算了骨扭转和骨/骨角.
  • 精度是使用骨扭曲模型测试的,而定位独立性和精度是使用正常的骨和临床患者数据来评估的.

主要成果:

  • CT技术在骨扭转模型 (0.2°差异) 中表现出高精度.
  • 测量结果在很大程度上独立于部位置 (平均差异<1.3°).
  • 在临床患者中观察到极好的精度,在观察者内部和观察者间测量时,变化系数较低.

结论:

  • 已开发了一种经过验证的3DCT方法,用于测量狗骨扭曲和/形形.
  • 该技术提供准确和精确的角度测量,独立于患者的定位.
  • 这种方法在兽医骨科中为评估部形提供了有价值的工具.