Abstract
We present a new photoacoustic tomography system that provides visualization of angiographic features in a human breast with mammogram-like images. The system images a mildly compressed breast, from both top and bottom, using two 128-element, 2.25MHz linear transducer arrays and line optical fiber bundles. The mild compression is achieved using plastic films, which is a more comfortable experience for the patient compared to rigid metal plates used in a traditional mammogram. We could image a D cup-sized breast of 7cm thickness within 1 minute and achieve a spatial resolution of around 1mm in all directions. Our system possesses the benefits of portability, speedy scanning, and patient comfort. The craniocaudal-view images can be easily correlated with existing imaging modalities for data interpretation. Early cancer detection plays a critical role in overall cancer survival rate. Our system may address the limitations of mammogram and offer a radiation-free screening technique for patients with dense breasts.
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