Multiscale photoacoustic microscopy and computed tomography.

Multiscale photoacoustic microscopy and computed tomography.
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DOI:
10.1038/nphoton.2009.157
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发表时间:
2009-08-29
期刊:
影响因子:
35
通讯作者:
--
中科院分区:
物理与天体物理1区
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光声断层扫描 (PAT) 可能是发展最快的生物医学成像技术,因为它能够在超出光学传输平均自由程(皮肤中约 1 毫米)的深度处对体内丰富的光学对比度进行高分辨率传感。现有的高分辨率光学成像技术,例如共焦显微镜和双光子显微镜,已经从根本上影响了生物医学,但还无法达到这样的深度。利用低超声散射的优势,PAT 间接将组织透明度提高 100 至 1000 倍,从而能够以高空间分辨率进行深度穿透的功能和分子成像。此外,PAT 有望在从亚细胞细胞器到具有相同对比来源的器官的多个长度尺度上进行体内成像,这是多尺度系统生物学研究中的重要应用。
Photoacoustic tomography (PAT) is probably the fastest growing biomedical imaging technology owing to its capability of high-resolution sensing of rich optical contrast in vivo at depths beyond the optical transport mean free path (~1 mm in the skin). Existing high-resolution optical imaging technologies, such as confocal microscopy and two-photon microscopy, have fundamentally impacted biomedicine but cannot reach such depths. Taking advantage of low ultrasonic scattering, PAT indirectly improves tissue transparency by 100 to 1000 fold and consequently enables deeply penetrating functional and molecular imaging at high spatial resolution. Further, PAT holds the promise of in vivo imaging at multiple length scales ranging from subcellular organelles to organs with the same contrast origin, an important application in multiscale systems biology research.
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