Characteristic Features of MR Truncation Artifacts |
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| Authors: | Leo F. Czervionke Jeanne M. Czervionke David L. Daniels Victor M. Haughton |
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| Affiliation: | Department of Radiology, Medical College of Wisconsin, Froedtert Memorial Lutheran Hospital, 9200 W. Wisconsin Ave., Milwaukee, WI 53226. Address reprint requests to L. F. Czervionke |
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| Abstract: | Truncation artifacts occur in MR imaging because Fourier transforms are used to process MR signal data. These artifacts may alter the intensity, shape, and anatomic detail of structures in the spine. Ring artifacts (Gibb phenomenon) occurring near highly contrasting interfaces represent but one manifestation of truncation artifacts visible on MR images. We review truncation phenomena by providing graphic and phantom models. Ways in which truncation artifacts alter the MR appearance of the spine are discussed.We found that truncation phenomena are reduced most effectively by using a 256 × 256 matrix whenever feasible. |
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