In vivo three-dimensional photoacoustic tomography of a whole mouse head

Optical Imaging Laboratory, Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA.
Optics Letters (Impact Factor: 3.18). 09/2006; 31(16):2453-5. DOI: 10.1364/OL.31.002453
Source: PubMed

ABSTRACT An in vivo photoacoustic imaging system was designed and implemented to image the entire small animal head. A special scanning gantry was designed to enable in vivo imaging in coronal cross sections with high contrast and good spatial resolution for the first time to our knowledge. By use of a 2.25 MHz ultrasonic transducer with a 6 mm diameter active element, an in-plane radial resolution of approximately 312 microm was achieved. Deeply seated arterial and venous vessels in the head measuring up to 1.7 cm in diameter were simultaneously imaged in vivo with 804 nm wavelength laser excitation of photoacoustic waves.

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