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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