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Image guidance of breast cancer surgery using 3-D ultrasound images and augmented reality visualization

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8 Author(s)
Sato, Y. ; Biomed. Res. Center, Osaka Univ. Med. Sch., Japan ; Nakamoto, M. ; Tamaki, Y. ; Sasama, T.
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This paper describes augmented reality visualization for the guidance of breast-conservative cancer surgery using ultrasonic images acquired in the operating room just before surgical resection. By combining an optical three-dimensional (3-D) position sensor, the position and orientation of each ultrasonic cross section are precisely measured to reconstruct geometrically accurate 3-D tumor models from the acquired ultrasonic images. Similarly, the 3-D position and orientation of a video camera are obtained to integrate video and ultrasonic images in a geometrically accurate manner. Superimposing the 3-D tumor models onto live video images of the patient's breast enables the surgeon to perceive the exact 3-D position of the tumor, including irregular cancer invasions which cannot be perceived by touch, as if it were visible through the breast skin. Using the resultant visualization, the surgeon can determine the region for surgical resection in a more objective and accurate manner, thereby minimizing the risk of a relapse and maximizing breast conservation. The system was shown to be effective in experiments using phantom and clinical data.

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Medical Imaging, IEEE Transactions on  (Volume:17 ,  Issue: 5 )