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Boundary artifact in inversion‐recovery images
Author(s) -
Droege R. T.,
Adamczak S. M.
Publication year - 1986
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910030118
Subject(s) - artifact (error) , amplitude , contrast (vision) , artificial intelligence , pixel , sign (mathematics) , computer vision , inversion (geology) , computer science , nuclear magnetic resonance , physics , geology , optics , mathematics , mathematical analysis , seismology , tectonics
Modulus reconstruction of inversion‐recovery images causes a pixel value to be assigned the absolute magnitude of the signal amplitude. Consequently, contrast between tissues is reduced if they have amplitudes of opposite sign. When contrast is reduced between adjacent tissues, dark line artifacts are created at the tissue boundaries. The artifacts may enable tissues to be spatially distinguished even if there is no contrast between them. However, the artifacts may lead to misinterpretation of the image since they may be difficult to distinguish from real anatomical structures. © 1986 Academic Press, Inc.