美国Endra www.endrainc.com 
美国Endra公司研发的小动物光声成像系统具备纳摩尔级的灵敏度以及280um的高分辨率，可探测表皮20mm以下的光声信号。并可用于小动物分子成像的定量分析。同时它结合了近红外探测技术，增强了光的吸收信号，进而增加了图片对比度，使实验结果更清晰，更精确。可以为肿瘤早期检测提供高对比度高分辨率的图像, 还可对肿瘤的治疗过程以及疗效进行监测。可从不同的角度可以清晰的看出血管直径的变化，血管扭曲，潜在的血流库，血管分流等。

Endra, Inc. is commercializing a breakthrough medical imaging technology that combines the properties of light‐based (optical) imaging with ultrasound to enable advanced medical imaging. Based on the principles of photoacoustics, Endra's equipment utilizes ultrasound to detect the miniscule amount of heating caused by laser light deep within tissue, providing high contrast imaging at depths and spatial resolution far exceeding existing techniques.

Endra's photoacoustic products are unique in their ability to provide rapid functional images of structures such as tumors, blood vessels, lymph nodes, and other tissues at a fraction of the cost of most current medical imaging devices, thereby addressing critical unmet needs in pre‐clinical, clinical, and point of care imaging settings.

The US market for medical imaging equipment exceeds $15 billion. Endra's products will function as stand alone devices or accessories to the existing ultrasound device installed base, which exceeds 200,000 units in the US and represents an annual market approaching $2 billion.

Endra has assembled a world class team of scientific, clinical, and pharmaceutical industry leaders with the objective of commercializing core photoacoustic IP in order to add physiological and molecular imaging capability to widely available ultrasound devices.