The aims of this study were to compare isotropic 3-dimensional fat-suppressed T2-weighted fast spin echo (FSE) imaging (T2FS) with 2-dimensional fat-suppressed proton-density–weighted FSE imaging (2D-PDFS) and evaluate feasibility of isotropic 3-dimensional FSE shoulder imaging at 3-T magnetic resonance imaging (MRI).
Seventy-eight patients who underwent shoulder MRI were evaluated. Three-dimensional T2FS and 2D-PDFS were qualitatively graded for delineation of anatomic structures. In quantitative analysis, mean relative signal intensity and relative signal contrast between each structure of the shoulder were compared.
Three-dimensional T2FS showed significantly higher scores for rotator cuff (P = 0.020), lower scores for bone (P < 0.001), and higher relative contrast of rotator cuff to fluid (P < 0.001) and labrum to fluid (P < 0.001) in comparison with 2D-PDFS. No significant difference in relative signal intensity of the rotator cuff, labrum, joint fluid, cartilage, and bone marrow was demonstrated.
Isotropic 3-dimensional FSE MRI has similar image quality and diagnostic performance to conventional 2-dimensional sequence in evaluation of the rotator cuff.
From the *Department of Radiology, St Luke's International Hospital, Tokyo, Japan;
†Department of Radiological Sciences, University of California, Irvine, Irvine, CA; and
‡Department of Orthopaedic Surgery and
§Center for Clinical Epidemiology, St Luke's International Hospital, Tokyo; and
∥Division of Regeneration and Advanced Medical Sciences, Department of Intelligent Image Information, Gifu University Graduate School of Medicine, Gifu, Japan.
Received for publication June 12, 2017; accepted December 19, 2017.
Correspondence to: Taiki Nozaki, MD, PhD, Department of Radiology, St Luke's International Hospital, 9-1 Akashi-cho, Chuo-ku, Tokyo 104-8560, Japan (e-mail: firstname.lastname@example.org).
The authors declare no conflict of interest.