Ultrafast Volumetric Optoacoustic Imaging of Whole Isolated Beating Mouse Heart.

Ultrafast Volumetric Optoacoustic Imaging of Whole Isolated Beating Mouse Heart.
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DOI:
10.1038/s41598-018-32317-1
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发表时间:
2018-09-20
期刊:
影响因子:
4.6
通讯作者:
Razansky D
Razansky D
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Lin HA;Déan-Ben XL;Reiss M;Schöttle V;Wahl-Schott CA;Efimov IR;Razansky D

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Langendorff灌注心脏技术已成为心脏功能和电生理学多参数光学标测的首选模型。然而,组织中的光子散射代表了光学成像方法的显著缺点,从根本上限制了其对心脏表面的映射能力。这项工作提出了第一个实施的光声方法的4D成像的整个跳动的孤立的小鼠心脏。该方法结合了光学激发和声学检测,同时在厘米级深度处呈现丰富的光学对比度和高时空分辨率。我们展示了位于心脏深处的特征的容积成像,包括室间隔、腱索和乳头肌,同时进一步跟踪心跳周期和真实的肺动脉、二尖瓣和三尖瓣的运动。该技术具有强大的组合之间的高成像深度,快速的体积成像速度,功能和分子成像能力,目前在心脏研究中使用的其他成像模式不可用。
The Langendorff-perfused heart technique has become the model of choice for multiparametric optical mapping of cardiac function and electrophysiology. However, photon scattering in tissues represents a significant drawback of the optical imaging approach, fundamentally limiting its mapping capacity to the heart surface. This work presents the first implementation of the optoacoustic approach for 4D imaging of the entire beating isolated mouse heart. The method combines optical excitation and acoustic detection to simultaneously render rich optical contrast and high spatio-temporal resolution at centimeter-scale depths. We demonstrate volumetric imaging of deeply located cardiac features, including the interventricular septum, chordae tendineae, and papillary muscles while further tracking the heart beat cycle and the motion of the pulmonary, mitral, and tricuspid valves in real time. The technique possesses a powerful combination between high imaging depth, fast volumetric imaging speed, functional and molecular imaging capacities not available with other imaging modalities currently used in cardiac research.
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