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Published online before print June 23, 2003, 10.1148/radiol.2282020295
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(Radiology 2003;228:569-575.)
© RSNA, 2003

Technical Developments

Circular Tomosynthesis: Potential in Imaging of Breast and Upper Cervical Spine—Preliminary Phantom and in Vitro Study1

Grant M. Stevens, PhD, Robyn L. Birdwell, MD, Christopher F. Beaulieu, MD, PhD, Debra M. Ikeda, MD and Norbert J. Pelc, ScD

1 From the Departments of Radiology (G.M.S., R.L.B., C.F.B., D.M.I., N.J.P.) and Applied Physics (G.M.S.), Lucas MRSI Center, Stanford University, Calif; and GE Medical Systems Lunar, Mailstop 215, 726 Heartland Trail, Madison, WI 53717 (G.M.S). From the 2000 RSNA scientific assembly. Received March 12, 2002; revision requested June 3; final revision received November 22; accepted December 16. Supported in part by GE Medical Systems and the Lucas Foundation. Address correspondence to G.M.S. (e-mail: Grant.Stevens@med.ge.com).

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.

© RSNA, 2003

Index terms: Images, processing • Phantoms • Radiography, digital • Radiography, technology • Test objects




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