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随着科学技术的进步, 各种影像学技术发展迅速, 然而任何一种影像技术都不能解决所有临床问题, 因此, 多模式显像成为临床应用的发展趋势。目前, PET-CT是最经典且成熟的多模式显像方法, 已广泛应用于临床。它实现了功能与解剖显像的同机融合, 在肿瘤早期诊断和临床分期、心血管和神经系统等疾病的诊断及疗效监测等领域发挥着重要作用。然而, PET-CT设备并不能实现PET和CT数据的实时同步采集, PET和CT所获数据在时间和空间上无法达到精确匹配, 对临床诊断有一定影响; 另外, CT图像对软组织的分辨率有限及有放射性等问题也限制了PET-CT功能的充分发挥。MRI是临床上另一种常见的显像工具, 它没有辐射性, 能提供精细的解剖信息和更好的软组织对比度, 还能通过磁共振波谱分析(magnetic resonance spectroscopy, MRS)等分子显像技术提供多种功能信息。因此, 人们对PET和MRI设备结合起来的PET-MRI多模式分子影像设备寄予厚望。本文主要综述PET-MRI的研制进展及存在的挑战, 并展望其在临床和科研工作中的应用前景。
PET-MRI技术的研究进展
Advances in PET-MRI technology
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摘要: 多模式显像已成为临床应用的发展趋势。目前,PET-CT是最经典且成熟的多模式显像方法,已广泛应用于临床。MRI是临床上另一种常见的显像方法,它没有辐射性,不仅能提供精细的解剖信息和更好的软组织对比度,还能通过磁共振波谱分析等分子显像技术提供多种功能信息。联合PET和MRI仪的PET-MRI多模式显像设备将可能对科研与临床应用产生更深远的影响。该文主要综述PET-MRI的研制进展、现状及存在的挑战,并展望其应用前景。
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关键词:
- 正电子发射断层显像术 /
- 磁共振成像 /
- 体层摄影术, X线计算机 /
- 图像处理, 计算机辅助
Abstract: Multimodality imaging is the general trend of clinical imaging.PET-CT is one of the most classic and mature multimodality imaging methods and is widely used today.MRI is another kind of conventional imaging method, in contrast to CT, MRI can not only yield images with higher soft-tissue contrast and better spatial resolution but also provide some functional information by special imaging techniques such as MRS.The combination of PET and MRI for simultaneous data acquisition should have far-reaching consequences for clinical and scientific study.This review describes the progress to date and talks about the problems met in the development of PET-MRI and look forward to its potential application. -
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