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Ryan Margolis¹, Brian Merlo¹, Dara Chanthavisay¹

¹Department of Bioengineering, University of Texas at Dallas, Richardson, TX, USA.

Quantitative imaging in medicine and surgery

|March 28, 2024

概括

血管油漆和硫酸 (BaSO4) 通过微型CT成像有效地可视化了微血管. 这些药物能够对较小的血管进行详细的成像,这对于了解癌症等病理至关重要.

科学领域:

生物医学成像技术生物医学成像技术
血管生物学血管生物学
放射学放射学是一门学科.

背景情况:

微血管可视化对于了解病理,包括癌症进展,退行性疾病和组织修复至关重要.
微型计算机断层扫描 (micro-CT) 与血管造剂相结合,可以提供组织血管的高分辨率3D成像.
有效的可视化帮助癌症诊断,预后和治疗评估.

研究的目的:

为了比较商业上可用的对比剂的有效性,用于微血管可视化.
为了确定最佳的对比剂,用于高分辨率的血管微型CT成像.

主要方法:

在裸体无血症小鼠中建立了正位素乳腺癌模型 (MDA-MB-231).
小鼠被分为四组:对照组,硫酸 (BaSO4),Vascupaint和Microfil.
施用对比剂是通过跨状小通道进行的,随后是微型CT扫描和对强度信号的图像分析.

主要成果:

与Microfil (P<0.05) 相比,Vascupaint和BaSO4在大脑和脏微血管上显示出显著的对比增强 (P<0.05).
在药物之间,在肝脏,脏或瘤组织中没有观察到图像增强的显著差异 (P>0.21).
与Microfil (~92μm;P<0.004) 相比,Vascupaint和BaSO4可视化了较小的微血管结构 (平均直径~20-26μm).

结论:

Vascupaint 和硫酸 (BaSO4) 对于使用对比度增强的微型CT进行ex vivo微血管可视化是非常有效的.
与Microfil.com相比,这些药物促进了较小的微血管网络的卓越 perfusion 和可视化.
这些发现支持使用Vascupaint和BaSO4进行详细的微血管研究,用于研究和诊断.

关键词:

微型计算机断层扫描 (微型CT)微片是微片中的一种.瓦斯的油漆是使用的.硫酸 (BaSO4) 是一种硫酸.血管成像血管成像

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