Complete tomographic data for Compton imaging probes

Transrectal Compton imaging probe is capable of simultaneous high sensitivity and high resolution that are necessary for detecting lesions with small sizes. However, it suffers from the limited angle tomographic reconstruction. Consequently, the quality of the reconstructed images is significantly degraded. We present a practical and effective scheme to eliminate limited angle problem inherent to the proposed Compton imaging probe by using auxiliary data to augment the incomplete tomographic data acquired from the probe alone. We give a mathematical formulation for the proposed scheme and describe its implementation. The proposed scheme fits seamlessly into the framework of the list-mode maximum likelihood expectation maximization reconstruction algorithm, yielding superior reconstructions. Our preliminary results demonstrate the effectiveness of the proposed approach.