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Filtered backprojection for modifying the impulse response of circular tomosynthesis
Author(s) -
Stevens Grant M.,
Fahrig Rebecca,
Pelc Norbert J.
Publication year - 2001
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.1350588
Subject(s) - tomosynthesis , impulse response , impulse (physics) , computer vision , circular motion , medical imaging , artificial intelligence , optics , computer science , mathematics , physics , mammography , mathematical analysis , medicine , cancer , quantum mechanics , breast cancer
A filtering technique has been developed to modify the three‐dimensional impulse response of circular motion tomosynthesis to allow the generation of images whose appearance is like those of some other imaging geometries. In particular, this technique can reconstruct images with a blurring function which is more homogeneous for off‐focal plane objects than that from circular tomosynthesis. In this paper, we describe the filtering process, and demonstrate the ability to alter the impulse response in circular motion tomosynthesis from a ring to a disk. This filtering may be desirable because the blurred out‐of‐plane objects appear less structured.