Hand and wrist imaging using a low-field dedicated MRI system |
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Authors: | H. Bonél A. Frick H. Sittek A. Heuck M. Steinborn R. G. H. Baumeister M. Reiser |
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Affiliation: | Institut für Radiologische Diagnostik, Klinikum Gro?hadern, Ludwig-Maximilians-Universit?t München, XX Plastische, Hand-, Mikrochirurgie, Chirurgische Klinik und Poliklinik, Klinikum Gro?hadern, Ludwig-Maximilians-Universit?t München, XX
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Abstract: | Summary Purpose of this study was to evaluate the diagnostic value of a low field dedicated MRI system in hand and wrist imaging. All 308 exams of the hand and wrist, that were performed on a low-field dedicated MRI system (Artoscan, Esaote Biomedica, Italy) in our institution in 1996, and high-field MRI exams performed in addition as part of the diagnostic work-up, were evaluated and correlated to final operative (n = 64) and histologic (n = 12) reports. 90 % of all low-field MRI scans stated a diagnosis according to clinical suspicion. In 62 % the clinical question was answered, and in 26 % additional pathologies were identified. An MR-diagnosis completely different from the clinical suspicion was stated in 2 %. High field exams contributed additional information in 6 of 36 patients. In 3 patients a tumor was not shown completely in the limited field-of-view of the dedicated low-field MRI-system. Frequency-selective fat-suppression pulse sequences and a better spatial resolution were the reasons for the additional information obtained in the other three patients. Low-field dedicated MR-imaging is a valuable method in the extensive work-up of the hand and wrist. Osseous, ligamentous and tendinous pathologies are well depicted. Large or infiltrative tumors should be referred to a high-field system. |
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Keywords: | MRI • Low-field • MRI • Dedicated • Diagnostic imaging • Hand • Wrist |
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