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Circular tomosynthesis: potential in imaging of breast and upper cervical spine--preliminary phantom and in vitro
Grant M Stevens1, Robyn L Birdwell, Christopher F Beaulieu
1Departments of Radiology and Applied Physics, Lucas MRSI Center, Stanford University, California, USA. Grant.Stevens@med.ge.con
Abstract:
Phantom and in vitro studies were performed to evaluate the potential application of digital circular tomosynthesis in imaging of the breast and upper cervical spine. A prototype volumetric x-ray system was used to image a mammographic phantom, a fresh mastectomy specimen, and a head phantom containing the upper cervical spine. Results show that breast tissue visualization is improved by the ability to produce sectional images that blur overlying structures and yield three-dimensional information about calcification clusters. In upper cervical spine imaging, digital circular tomosynthesis effectively blurs overlying jaw and skull structures so that C1 and C2 can be visualized in a standard anteroposterior view.