在年轻成年拉布拉多回收犬中,计算机断层扫描的正常中枢冠状体过程的形状和变异性
Luzanne van der Laan1, Robert M Kirberger1, Geoffrey T Fosgate2,3
1Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa.
概括
在拉布拉多犬中,中枢冠状体过程疾病 (MCPD) 可以使用计算机断层扫描 (CT) 来诊断. 这项研究确定了正常的中间冠状体过程 (MCP) 形状和霍恩斯菲尔德单位 (HU) 范围,有助于准确诊断.
科学领域:
- 兽医辐射学 兽医辐射学
- 狗类整形外科 狗类整形外科
- 比较解剖学的比较解剖学
背景情况:
- 中枢冠状体过程疾病 (MCPD) 是肘发育不良的主要原因,在像拉布拉多猎犬 (LRs) 这样的年轻大品种狗中.
- 计算机断层扫描 (CT) 是评估中间冠状体过程 (MCP) 的首选成像方法,因为它具有非侵入性和避免辐射头叠加的能力.
- 了解正常的MCP形态和密度对于诊断MCPD至关重要.
研究的目的:
- 在拉布拉多犬的CT扫描上描述中枢冠状体过程 (MCP) 的正常形状.
- 评估品种内MCP形状的变化.
- 为了确定MCP,中间辐射头 (MRH) 和侧辐射头 (LRH) 的正常Hounsfield单位 (HU) 范围.
主要方法:
- 这是一项回顾性描述性研究,分析了来自南非导犬LRs的51个正常肘部CT扫描.
- 使用可重复的成像对齐技术来评估MCP形状和测量HU值.
- 与CT评估水平相关联的MCP形状,并比较了性别和辐射头部结构之间的HU值.
主要成果:
- 根据CT评估水平,确定了三种主要的MCP形状 (卵状,三角形,软尖).
- 与女性相比,男性LRs的平均MCP HU显著较低.
- MRH 始终显示出比LRH更高的HU值和更大的衰减;近距离测量由于体积平均化而不足最佳.
结论:
- 在LR中正常的MCP形状因CT评估水平而异,但这些变化不会导致MCPD的错误分类.
- 基于性别的MCP HU差异和MRH和LRH之间一致的HU变异是CT解释的重要考虑因素.
- 精确的HU测量需要避免过度近距离采样,以防止体积平均化工件.
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