Targeted Blue Nanoparticles as Photoacoustic Contrast Agent for Brain Tumor Delineation.

Targeted Blue Nanoparticles as Photoacoustic Contrast Agent for Brain Tumor Delineation.
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靶向蓝色纳米粒子作为光声造影剂用于脑肿瘤描绘

DOI:
10.1007/s12274-011-0166-1
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发表时间:
2011-11
期刊:
影响因子:
9.9
通讯作者:
Kopelman R
Kopelman R
中科院分区:
材料科学1区
文献类型:
--
作者:
Ray A;Wang X;Lee YK;Hah HJ;Kim G;Chen T;Orringer DA;Sagher O;Liu X;Kopelman R

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在癌症手术中,区分肿瘤和非肿瘤组织是一项具有挑战性的任务。已经进行了几次尝试,以使用可见或荧光剂来辅助手术期间肿瘤的可视化。我们描述了一种新的方法来描绘脑肿瘤,使用高灵敏的光声成像技术,该技术通过肿瘤靶向蓝色纳米颗粒作为造影剂进行增强。在模体和大鼠大脑上的实验表明,光声成像在描绘肿瘤时具有很高的灵敏度,所含造影剂的浓度远远低于肉眼观察所需的浓度。该体系对纳米粒子在水中的检出限约为0.77μg/m L(相当于0.84m ol/L考马斯蓝染料)。目前的探索性研究表明,光声成像与强光吸收造影剂联合使用,可以通过揭示肿瘤的分布和范围,为术中肿瘤手术提供便利。
Distinguishing a tumor from non-neoplastic tissue is a challenging task during cancer surgery. Several attempts have been made to use visible or fluorescent agents to aid in the visualization of a tumor during surgery. We describe a novel method to delineate brain tumors, using a highly sensitive photoacoustic imaging technique that is enhanced by tumor-targeting blue nanoparticles serving as a contrast agent. Experiments on phantoms and on rat brains,ex vivo, demonstrate the high sensitivity of photoacoustic imaging in delineating tumors containing contrast agent at a concentration much lower than needed for visualization by the naked eye. The limit of detection of the system for the nanoparticles is about 0.77 μg/mL in water (equivalent to 0.84 μmol/L Coomassie Blue dye). The present exploratory study suggests that photoacoustic imaging, when used with strongly optical absorbing contrast agents, could facilitate cancer surgery intraoperatively by revealing the distribution and extent of the tumor.
DOI: 10.1227/01.neu.0000367631.02903.50
发表时间: 2010-04
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