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MRI of spinal hardware: comparison of conventional T1-weighted sequence with a new metal artifact reduction sequence |
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| Authors: | Silvia D. Chang M. J. Lee Peter L. Munk Dennis L. Janzen Alex MacKay Qing-San Xiang |
| Affiliation: | (1) Department of Radiology, Vancouver General Hospital, 899 West 12th Avenue, Vancouver, BC, Canada V5Z 1M9, CA;(2) Department of Physics, University of British Columbia, Vancouver, BC, Canada, CA;(3) Department of Radiology, St. Paul’s Hospital and British Columbia Children’s Hospital, Vancouver, BC, Canada, CA;(4) University of British Columbia, Vancouver, BC, Canada, CA |
| Abstract: | Objective. This study was designed to compare diagnostic quality of MR images of patients with spinal hardware acquired using a conventional T1-weighted spin-echo sequence and a new metal artifact reduction sequence (MARS). Conclusion. The new MARS sequence effectively reduces the degree of tissue-obscuring artifact produced by spinal fixation hardware and subjectively improves image quality compared with the conventional T1-weighted spin-echo sequence. Received: 30 May 2000 Revision requested: 12 September 2000 Revision received: 27 September 2000 Accepted: 27 November 2000 |
| Keywords: | Magnetic resonance imaging Artifact Metal implants and hardware Spine View angle tilting MARS (metal artifact reduction sequence) |
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