Shinyoung Park MD, Presenter: Nothing to Disclose

In Sook Lee, Abstract Co-Author: Nothing to Disclose

Se Kyoung Park, Abstract Co-Author: Nothing to Disclose

To compare the diagnostic accuracy of three-dimensional (3D) isotropic MR arthrography using each fat-suppressed proton density (pd) and VIBE sequence with conventional MR arthrography for the diagnosis of labral and rotator cuff lesions at 3T

From January 2009 through December 2010, 187 patients prospectively performed conventional and 3D isotropic MR arthrographies by using a 3-T MR unit. Total 85 patients (31 women, 54 men, age range; 16-78 years, mean age; 49.7 years) who underwent arthroscopic surgery were included. 3D isotropic sequences (section thickness, 0.6 mm) were performed in the axial plane by using fat-suppressed pd (imaging time, 6 minutes) in 53 patients and VIBE (4 minutes 31 seconds) in 32. Reformatted images were obtained in the oblique sagittal and oblique coronal planes, corresponding conventional images. Two musculoskeletal radiologists retrospectively evaluated the images in consensus for the presence of labral and rotator cuff lesions using each conventional and 3D isotropic sequence. The correlation of each sequence with arthroscopic findings was analyzed by using the kappa statistics.

For the labral lesions, both 3D isotropic sequences showed good agreement with arthroscopic results. For tears of supraspinatus and biceps tendons, 3D istotropic pd sequence and conventional sequences showed good agreement with arthroscopy. About the presence of subscapularis tear and biceps dislocation, 3D isotropic sequences and conventional sequences showed fair to moderate agreements with arthroscopy. In both labral and rotator cuff lesions, 3D isotropic images and conventional images represented good to excellent agreements

For the rotator cuff lesions, 3D isotropic images provide the similar clinical information as conventional images. In the labral lesions, 3D isotropic pd sequence was more useful compared with conventional sequences.

For more effective evaluation of the labral and rotator cuff lesions, appropriate mixture of 3D isotropic sequences and conventional sequences is needed. These methods may reduce the scanning time

Park, S, Lee, I, Park, S, Comparison of Three-dimensional Isotropic MR Arthrography and Conventional MR Arthrography of Labral and Rotator Cuff Lesions: Focused on Isotropic Fat-suppressed Proton Density and VIBE Sequences.  Radiological Society of North America 2012 Scientific Assembly and Annual Meeting, November 25 - November 30, 2012 ,Chicago IL. http://archive.rsna.org/2012/12043637.html