| 摘要 |
A nuclear camera ( 10 ) includes a plurality of detector heads ( 12 ) which have collimators ( 14 ) for fixing the trajectory along which radiation is receivable. A rotating gantry ( 22 ) rotates the detector heads around the subject collecting less than 360° of data, e.g., 204° of data. A zero-filling processor ( 50 ) generates zero-filled projection views such that the actually collected projection views and the zero-filled projection views span 360°. A smoothing processor ( 56 ) smooths an interface between the zero-filled and actually collected projection views. The zero-filled and smoothed views are Fourier transformed ( 60 ) into frequency space, filtered with a stationary deconvolution function ( 62 ), and Fourier transformed ( 64 ) back into real space. The resolution recovered projection data sets in real space are reconstructed by a reconstruction processor ( 68 ) into a three-dimensional image representation for storage in an image memory ( 70 ).
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