Optoacoustic imaging
Optoacoustic Imaging
Optoacoustic imaging (pronunciation: op-toe-uh-koo-stik im-uh-jing), also known as photoacoustic imaging, is a medical imaging technique that combines ultrasound and laser-induced photoacoustic signals to create detailed images of the body's internal structures.
Etymology
The term "optoacoustic" is derived from the Greek words "opto" meaning light and "acoustic" meaning sound. This reflects the technique's use of light and sound waves to create images.
Technique
In Optoacoustic imaging, a short laser pulse is delivered to the tissue. The absorbed light is converted into heat, leading to transient thermoelastic expansion and thus generating an ultrasound signal. This signal is then detected by an ultrasound transducer and used to reconstruct an image of the tissue.
Applications
Optoacoustic imaging is used in various medical fields, including oncology, cardiology, and dermatology. It can provide high-resolution images of tumors, blood vessels, and skin structures. It is also used in preclinical research for studying disease processes and drug effects.
Advantages
Optoacoustic imaging has several advantages over other imaging techniques. It can provide high-resolution images at greater depths than optical imaging, and it does not require any ionizing radiation, unlike computed tomography (CT) or x-ray imaging.
Related Terms
External links
- Medical encyclopedia article on Optoacoustic imaging
- Wikipedia's article - Optoacoustic imaging
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