A tunable, high-energy, pulsed laser source for photoacoustic imaging

用于光声成像的可调谐高能脉冲激光源

• 批准号: 390203-2010
• 负责人: Tang, Shuo
• 金额: $ 6.13万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=443132
• 关键词: tunable; energy; pulsed; laser; source

Photoacoustic imaging is an emerging field that utilizes laser pulses to excite ultrasound waves in tissue and uses ultrasound detectors to record the ultrasound waves and reconstruct an image. When tissue absorbs a laser pulse, its local temperature is slightly yet rapidly increased by laser heating. The rapid temperature rising induces acoustic wave through thermal expansion. The advantage of photoacoustic imaging is biochemical specificity and deep penetration.

光声成像是一个新兴的领域，它利用激光脉冲在组织中激发超声波，并使用超声探测器记录超声波并重建图像。当组织吸收激光脉冲时，其局部温度因激光加热而略有升高，但很快就会升高。快速升温通过热膨胀产生声波。光声成像的优势在于生物化学的特异性和穿透性。