| Contents |
| We will present the microlocal properties of a limited data transform
in thermoacoustic tomography. We consider the case in which data are
recovered on a small circular arc, and we use microlocal analysis to
prove how the reconstruction operator $R^*R$ adds artifacts unless one
truncates smoothly at the boundaries of the arc. We prove
generalizations to the three-dimensional case and provide a
framework for other limited data problems. |
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