PMID: 9659595Jul 11, 1998Paper

Magnetic resonance diagnosis of the anterior labrum and capsule. Effect of field strength on efficacy

Investigative Radiology
K H AllmannM Langer

Abstract

The authors compare the performance of high-field and low-field magnetic resonance (MR) systems in the evaluation of shoulder instability, 35 patients were examined at field strengths of 1.0 T and of 0.2 T. Surface coils were used in both systems. Because arthroscopy was used as gold standard, a preselected patient-population was obtained for the study. The sensitivity/specificity/accuracy of MR images acquired at 1.0 T for labrum pathology were 91%/67%/91% and 70%/80%/71% for the capsular complex. Compared with the above, the sensitivity/specificity/accuracy for 0.2 T MR images revealed 91%/67%/91% for the labrum pathology and 63%/80%/66% for the capsular complex respectively. In the evaluation of capsular lesions a comparison between the 0.2 T MR system and the 1.0 T system indicated a higher sensitivity and accuracy for the high-field images. Concerning labral lesions, the sensitivity and accuracy of the 0.2 T MR imager and the 1.0 T imager were comparable. Given differences in imaging protocols, imaging at 0.2 T does not adversely affect the assessment of shoulder instability when compared with imaging at 1.0 T. These preliminary results warrant more extensive clinical comparison of results obtained at different magnetic fi...Continue Reading

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Citations

Mar 8, 2012·Archives of Orthopaedic and Trauma Surgery·Toby O SmithAndoni P Toms
Jun 26, 2013·Journal of Magnetic Resonance·I SavukovL Schultz
May 17, 2005·Radiologic Clinics of North America·Thierry Tavernier, Anne Cotten
Oct 24, 2003·AJR. American Journal of Roentgenology·Thomas MageeDavid Williams
Aug 12, 2005·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Naoto HayashiTetsuhiko Takahashi
Feb 11, 2009·Sports Medicine and Arthroscopy Review·Hatice Tuba SanalChristine Chung
May 23, 2015·Investigative Radiology·Reto SutterChristian W A Pfirrmann
Jun 25, 2003·Investigative Radiology·Nancy L SicotteJohn C Mazziotta
Jul 1, 2014·Orthopaedic Journal of Sports Medicine·Christopher S LeeScott E Powell

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