CNT X-ray source array for detection and treatment of cancer

We recently developed a new spatially distributed x-ray source array technology utilizing the carbon nanotubes (CNTs) as the electron field emitters. The technology with flexible source configuration and digital control of radiation opens up new possibilities for designing x-ray tomography scanners with enhanced resolution and scanning speed, and for developing novel radiotherapy systems. Several imaging and radiation therapy systems are currently at different stages of development. A stationary digital tomosynthesis scanner for detection of human breast tumor has been demonstrated which offers a higher spatial resolution, a faster scanning speed, and potentially a higher sensitivity for micro-calcification compared to the current rotating-gantry tomosynthesis scanners. We have also initiated an effort on microbeam radiotherapy, which is an experimental and preclinical technique that has been shown in synchrotron based animal studies to be effective for eradication of brain tumor while sparing normal tissue. In this talk we will provide an update on the status of the CNT x-ray source technology and will introduce the stationary digital breast tomosynthesis and microbeam radiation therapy systems currently under development at UNC.