ABSTRACT
As described in other chapters, tomosynthesis can be applied to a variety of clinical applications, and images can be obtained using a variety of system geometries. Because of the many options in image acquisition, in fact, Chapter 2 is entirely devoted to tomosynthesis system geometries. In general, as the relative motion of the x-ray source becomes more complicated, there is a greater opportunity to effectively blur the structures overlying the plane of interest. This chapter investigates the use of circular motion, and how it can lead to effective blurring of off-plane structures. In addition, design of filters to be used with (filtered) backprojection allows circular motion systems to produce images that appear to come from gantries with more sophisticated geometries.
