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MINERVA ORTOPEDICA E TRAUMATOLOGICA

A Journal on Orthopedics and Traumatology


Official Journal of the Piedmontese-Ligurian-Lombard Society of Orthopedics and Traumatology
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Minerva Ortopedica e Traumatologica 2013 October;64(5):497-506

Copyright © 2013 EDIZIONI MINERVA MEDICA

language: Italian

Meniscal lacerations assessment with high- (1,5 t) and law field (0,31 t) magnetic resonance and its correlation with arthroscopical gold standard

Parchi P. 1, Paolicchi A. 2, Castellini I. 1, Andreani L. 1, Ruschi F. 2, Piolanti N. 1, Lisanti M. 1

1 Unità Operativa I Clinica Ortopedica e Traumatologica Universitaria di Pisa Pisa, Italia; 2 Unità Operativa di Radiodiagnostica 3 AOUP Pisa, Italia


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Aim: The aim of this study was to evaluate sensitivity, specificity and accuracy in the diagnosis of meniscal lacerations with a traditional high field magnetic resonance (MR) scanner (1.5 T) and a new concept dedicated MR system (0.31 T) and to compare the radiological data with the arthroscopical ones.
Methods: From September 2010 to November 2011 37 patients with suspected meniscal lacerations were evaluated with a traditional high field MR scanner (1.5 T) and a new concept dedicated MR system (0.31 T). After one month patients underwent an arthroscopy and surgical data were compared with those radiological and evaluated in double blind by two expert radiologists (Reader A and B).
Results: The sensibility of the two MR systems was the same, while specificity was over 92% but differed by 5 points. According to Reader B’s data, the two systems accuracy was the same (90.32%). With the dedicated MR system we had a correct diagnosis in 90% of cases and with high field MR scanner in the 91-92%.
Conclusion: From our data we can affirm that arthroscopy is the gold standard for the meniscal pathology. In the diagnosis of meniscal lacerations the accuracy of dedicated MR system was comparable to that of the high field MR system.

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l.andreani@hotmail.it