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美國Endra  
美國Endra公司研發的小動物光聲成像系統具備納摩爾級的靈敏度以及280um的高分辨率，可探測表皮20mm以下的光聲信號。并可用于小動物分子成像的定量分析。同時它結合了近紅外探測技術，增強了光的吸收信號，進而增加了圖片對比度，使實驗結果更清晰，更精確。可以為腫瘤早期檢測提供高對比度高分辨率的圖像, 還可對腫瘤的治療過程以及療效進行監測。可從不同的角度可以清晰的看出血管直徑的變化，血管扭曲，潛在的血流庫，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.