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移植前的质量评估使用光声成像在正常热机器 perfusion 过程中
Anton V Nikolaev1, Yitian Fang2, Jeroen Essers3,4,5
1Erasmus MC, Cardiovascular Institute, Thorax Center, Department of Cardiology, Dr. Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands.
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|February 21, 2024
概括
在机器输液过程中进行光声学成像可以评估移植质量. 该技术以80%的灵敏度和85%的特异性识别非功能性,改善器官选择.
科学领域:
- 生物医学成像技术 生物医学成像技术
- 移植科学 移植科学
- 器官 perfusion 技术 器官 perfusion 技术 器官 perfusion 技术 器官 perfusion 技术 器官 perfusion 技术 器官 perfusion 技术 器官 perfusion 技术 器官 perfusion 技术 器官 perfusion 技术 器官 perfusion 技术 器官 perfusion 技术 器官 perfusion 技术 器官 perfusion 技术 器官 perfusion 器官 perfusion 技术
背景情况:
- 由于捐赠脏的短缺,需要改善移植前的质量评估.
- 评估活性的现有方法存在局限性,导致移植功能延迟或失败.
- 新型成像技术对于提高移植器官选择的效果至关重要.
研究的目的:
- 探索光声学 (PA) 成像在正常热机器输液 (NMP) 过程中的潜力,以评估质量.
- 量化NMP期间在不同深度的皮层氧化,并将其与功能相关联.
- 确定PA成像的最佳参数,以区分功能和非功能脏.
主要方法:
- 使用3D光声学成像 (PA) 监测22个猪在2小时的正常热机器输液 (NMP) 会议期间.
- 在2毫米,4毫米和6毫米的深度使用双波长PA成像,在皮层中量化氧化 (sO2).
- 根据输液和尿液的生物化学分析,将脏分类为"功能"或"非功能";进行ROC分析以确定最佳成像参数.
主要成果:
- 皮层的缺氧与功能不良有关.
- 在30分钟的NMP后,在2毫米皮层深度的PA成像有效地区分了功能性和非功能性脏 (80%的灵敏度,85%的sO2特异性<39%).
- 在所有脏中,氧化与脏血流 (RBF) 和氧气消耗 (VO2) 有显著的相关性;在功能脏中,sO2也与肌素清除 (CrCl) 有相关性.
结论:
- 在NMP期间的光声成像是一种有前途的技术,用于在移植之前评估质量.
- 皮层氧化,特别是在2毫米深处,可以作为一个可靠的生物标志物来区分可活和不可活的器官.
- 这种成像方法可以支持改善器官选择,潜在地减少移植后并发症.
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