双重成像剂用于磁粒子成像和计算机断层扫描
Sitong Liu1, Anahita Heshmat2, Jennifer Andrew3
1Department of Chemical Engineering, University of Florida Gainesville FL 32611 USA carlos.rinaldi@ufl.edu.
Nanoscale advances
|June 1, 2023
概括
研究人员开发了一种新的双成像剂,它结合了磁粒子成像 (MPI) 和计算机断层扫描 (CT) 追踪器. 这种新剂提供了更好的MPI灵敏度和CT对比度,推进了多式联络生物医学成像能力.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 磁性粒子成像 (MPI) 为跟踪超偏磁性氧化铁纳米粒子 (SPION) 追踪器提供了高灵敏度,但缺乏解剖信息.
- 计算机断层扫描 (CT) 提供高分辨率的解剖细节,但对于某些应用而言,其灵敏度有限.
- 结合MPI和CT能力的多式成像剂是可取的,以提高诊断能力.
研究的目的:
- 开发和描述一种能够同时进行MPI和CT成像的新型双成像剂.
- 在MPI灵敏度,分辨率和CT对比度方面评估双成像剂的性能.
- 评估双能成像剂对像双能CT (DECT) 等先进成像技术的潜力.
主要方法:
- 使用闪光纳米沉,制造含有SPION和氧化 (hafnia) 的复合纳米粒子.
- 使用传输电子显微镜和元素映射对纳米粒子组成和结构的描述.
- 在临床前和临床扫描仪中评估磁性,MPI性能 (灵敏度和分辨率) 和CT对比度.
主要成果:
- 成功合成了双成像MPI/CT药物与联合封装的氧化铁和哈夫尼亚.
- 双成像剂的MPI灵敏度大约是商业标记器的3倍.
- 与基药物相比,CT对比度提高,具有DECT应用和虚拟单色成像的潜力.
结论:
- 开发的双成像剂成功地集成了MPI和CT对比功能.
- 该药物表现出改善的MPI灵敏度和优越的CT对比度,与现有药物相比,具有优势.
- 这种新型药物对先进的多式联络生物医学成像,特别是DECT技术具有前途.
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