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目前的影像模式可以分为两大类: 一是提供结构信息的, 如MRI、CT及超声检查等; 二是提供功能及分子信息的, 如PET、SPECT、磁共振波谱成像及光学成像等。由于目前还没有单纯一种影像模式能够同时提供全部的解剖及功能信息, 因此, 人们希望通过融合不同影像模式的方式来同时获取解剖及功能图像。PET-CT和SPECT-CT已经成功应用于临床, 最近又出现了PET-MRI系统[1-2], 其他一些设备也在研制中。在许多情况下, 这些影像模式需要使用显像剂或对比剂来产生或放大影像对比, 例如, 放射性核素用于PET或SPECT、顺磁性物质用于MRI增强、高密度分子用于CT增强、微泡用于超声增强或荧光素用于光学成像等。这些显像剂或对比剂的运用大大提高了影像诊断的能力。近年来, 人们在多模式影像探针的研究领域已经取得了巨大进展。与使用两种不同生物学分布的探针进行显像然后再进行复杂数据融合不同, 双功能探针在一个分子中融合了能同时用于两种不同影像模式的结构。本文讨论了双模式分子影像探针的研究进展及其应用。
双模式分子影像探针研究进展
The research progress of dual-modality probes for molecular imaging
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摘要: 许多影像模式能应用于体内组织的解剖或功能成像。然而,每种影像模式都有自己的优缺点,目前还没有一种单纯模式能同时提供全部的解剖、功能以及分子信息。联合使用两种不同的影像模式,将大大提高影像诊断及治疗的能力。随着越来越多的双模式影像系统出现,人们对双模式探针的研究已经取得了很大的进展,这些双模式探针能充分发挥每种影像模式的优势,已经成为未来多模式影像的新工具,为临床诊断提供全面的信息。该文讨论了双模式影像探针的研究进展及其面临的挑战。
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关键词:
- 分子探针 /
- 体层摄影术 /
- 图像处理, 计算机辅助
Abstract: Various imaging modalities have been exploited to investigate the anatomic or functional dissemination of tissues in the body.However, no single imaging modality allows overall structural, functional, and molecular information as each imaging modality has its own unique strengths and weaknesses.The combination of two imaging modalities that investigates the strengths of different methods might offer the prospect of improved diagnostic abilities.As more and more dual-modality imaging system have become clinically adopted, significant progress has been made toward the creation of dual-modality imaging probes, which can be used as novel tools for future multimodality systems.These all-in-one probes take full advantage of two different imaging modalities and could provide comprehensive information for clinical diagnostics.This review discusses the advantages and challenges in developing dual-modality imaging probes.-
Key words:
- Molecular probes /
- Tomography /
- Image processing, computer-assisted
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[1] Slates RB, F arahani K, Shao Y, et al. A study of artefacts in simultaneous PET and MR imaging using a prototype MR compatible PET scanner. Phys Med Biol, 1999, 44(8): 2015-2027. doi: 10.1088/0031-9155/44/8/312 [2] Cho ZH, Son YD, Kim HK, et al. A fusion PET-MRI system with a high-resolution research tomograph-PET and ultra-high field 7.0 TMRI for the molecular-genetic imaging of the brain. Proteomics, 2008, 8(6): 1302-1323. [3] Choi JS, Park JC, Nah H, et al. A hybrid nanoparticle probe for dual-modality positron emission tomography and magnetic resonance imaging. Angew Chem Int Ed Engl, 2008, 47(33): 6259-6262. doi: 10.1002/anie.200801369 [4] Lee JH, Huh YM, Jun YW, et al. Artificially engineered magnetic nanoparticles for ultra-sensitive molecular imaging. Nat Med, 2007, 13(1): 95-99. doi: 10.1038/nm1467 [5] Jarrett BR, Gustafsson B, Kukis DL, et al. Synthesis of 64Cu-labeled magnetic nanoparticles for multimodal imaging. Bioconjug Chem, 2008, 19(7): 1496-1504. doi: 10.1021/bc800108v [6] Lee HY, Li Z, Chen K, et al. PET/MRI dual-modality tumor imaging using arginine-glycine-aspartic(RGD)-conjugated radiolabeled iron oxide nanoparticles. J Nucl Med, 2008, 49(8): 1371-1379. doi: 10.2967/jnumed.108.051243 [7] 王浩, 施培基, 周晓靓, 等. RGD肽及其衍生物在肿瘤显像及治疗中的研究进展. 国际放射医学核医学杂志, 2007, 31(5): 274-277. doi: 10.3760/cma.j.issn.1673-4114.2007.05.006
[8] Judenhofer MS, Wehrl HF, Newport DF, et al. Simultaneous PETMRI: a new approach for functional and morphological imaging. Nat Med, 2008, 14(4): 459-465. doi: 10.1038/nm1700 [9] Catana C, Procissi D, Wu Y, et al. Simultaneous in vivo positron emission tomography and magnetic resonance imaging. Proc Natl Acad Sci USA, 2008, 105(10): 3705-3710. doi: 10.1073/pnas.0711622105 [10] 丁志凌, 陈跃, 孙媛媛, 等. Gd-DTPA-Dimeglumine的99Tcm标记及其生物学特性. 同位素, 2009, 22(3): 149-155.
[11] Chen Y, Ding ZL, Huang ZW, et al. Preparation and in vivo eraluation of9Tcm-DTPA-Gd for possjble multimodal imaging use. Eur J Nud Mol Imaging, 2009, 36(suppl2): S242. [12] Chen Y, Ding ZL, Huang ZW, et al. Preparation and biodistribution of a novel 99mTc-DTPA-Gd as a potential agent for multimodality imaging. Eur J Nucl Med Mol Imaging, 2009, 36(suppl2): S376. [13] Culver J, Akers W, Achilefu S. Multimodality molecular imaging with combined optical and SPECT/PET modalities. J Nucl Med, 2008, 49(2): 169-172. doi: 10.2967/jnumed.107.043331 [14] Li C, Wang W, Wu Q, et al. Dual optical and nuclear imaging in human melanoma xenografts using a single targeted imaging probe. Nucl Med Biol, 2006, 33(3): 349-358. doi: 10.1016/j.nucmedbio.2006.01.001 [15] Wang W, Ke S, Kwon S, et al. A new optical and nuclear duallabeled imaging agent targeting interleukin 11 receptor alphachain. Bioconjug Chem, 2007, 18(2): 397-402. doi: 10.1021/bc0602679 [16] Cai W, Chen K, Li ZB, et al. Dual-function probe for PET and nearinfrared fluorescence imaging of tumor vasculature. J Nucl Med, 2007, 48(11): 1862-1870. doi: 10.2967/jnumed.107.043216 [17] Alivisatos P. The use of nanocrystals in biological detection. Nat Biotechnol, 2004, 22(1): 47-52. doi: 10.1038/nbt927 [18] Sampath L, Kwon S, Ke S, et al. Dual-labeled trastuzumab-based imaging agent for the detection of human epidermal growth factor receptor 2 overexpression in breast cancer. J Nucl Med, 2007, 48(9): 1501-1510. doi: 10.2967/jnumed.107.042234 [19] Thorek DL, Chen AK, Czupryna J, et al. Superparamagnetic iron oxide nanoparticle probes for molecular imaging. Ann Biomed Eng, 2006, 34(1): 23-38. doi: 10.1007/s10439-005-9002-7 [20] Yu M K, Jeongyy, Park J, et al. Drug-loaded superparamagnetic iron oxide nanoparticles for combined cancer imaging and therapy in vivo. Angew Chem Int Ed, 2008, 47(29): 5362-5365. doi: 10.1002/anie.200800857 [21] Bridot JL, Faure AC, Laurent S, et al. Hybrid gadolinium oxide nanoparticles: multimodal contrast agents for in vivo imaging. J Am Chem Soc, 2007, 129(16): 5076-5084. doi: 10.1021/ja068356j [22] Louis C, Bazzi R, Christophe A, et al. Nanosized hybrid particles with double luminescence for biological labeling. Chem Mater, 2005, l7(7): 1673-1682. [23] Alric C, Serduc R, Mandon C, et al. Gold nanoparticles designed for combining dual modality imaging and radiotherapy. Gold Bulletin, 2008, 41(2): 90-97. doi: 10.1007/BF03216586 [24] Willmann JK, Cheng Z, Davis C, et al. Targeted microbubbles for imaging tumor angiogenesis: assessment of whole-body biodistribution with dynamic micro-PET in mice. Radiology, 2008, 249(1): 2l2-219.