MR imaging of rotator cuff tendon tears: comparison of T2*-weighted gradient-echo and conventional dual-echo sequences.
- 1 June 1997
- journal article
- research article
- Published by American Roentgen Ray Society in American Journal of Roentgenology
- Vol. 168 (6) , 1519-1524
- https://doi.org/10.2214/ajr.168.6.9168717
Abstract
Although MR imaging evaluation of the rotator cuff is usually done with proton density- and T2-weighted spin-echo techniques, interest also exists in T2*-weighted gradient-recalled echo techniques. The shorter scan times of T2*-weighted sequences can be used to increase the number of signal averages and thus improve the signal-to-noise ratio. Our purpose in this study was to compare the sensitivity and specificity of oblique coronal T2*-weighted MR image interpretations with conventional dual-echo T2-weighted MR image interpretations when diagnosing rotator cuff tears.Forty-seven consecutive patients who underwent both MR imaging and shoulder arthroscopy were included in this study. The MR examination included both a 7 min 20 sec acquisition time proton density- and T2-weighted oblique coronal sequence and a 7 min 5 sec T2*-weighted oblique coronal sequence. The oblique coronal dual-echo T2-weighted images were evaluated by two of the authors independently, who were unaware of the arthroscopic findings. E...Keywords
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