MR imaging of the rotator cuff mechanism: comparison of spin-echo and turbo spin-echo sequences
| Autor: | A H Sonin, S W Fitzgerald, Anthony J. Peduto, Michael E. Bresler, Catherine M. Callahan |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Adult
Male Adolescent Rotator Cuff Injuries Equal time Rotator Cuff Nuclear magnetic resonance medicine Humans Radiology Nuclear Medicine and imaging Rotator cuff Child Aged Retrospective Studies business.industry General Medicine Middle Aged Fast spin echo Magnetic Resonance Imaging Mr imaging Sagittal plane medicine.anatomical_structure Cuff Spin echo Female business Coracoacromial Arch |
| Zdroj: | American Journal of Roentgenology. 167:333-338 |
| ISSN: | 1546-3141 0361-803X |
| Popis: | Although well documented in other MR imaging applications, the value of turbo spin-echo sequences in evaluating the shoulder has not been addressed. This study was designed to directly compare matched spin-echo and turbo spin-echo sequences in the MR imaging evaluation of the rotator cuff.Using otherwise matched double-echo sequences of equal time duration, we performed 123 paired spin-echo (TR/TE, 200/25,75; one excitation) and turbo spin-echo (3500-5000/22,90; two excitations) sequences in the paracoronal and/or parasagittal plane of the shoulders of 76 patients referred to our institution for possible rotator cuff tear. The sequences were retrospectively analyzed for cuff signal and morphology, fluid conspicuity, coracoacromial arch morphology, and bone marrow signal abnormalities. Surgical and nonsurgical clinical results were correlated when available.We found 100% diagnostic correlation between spin-echo and turbo spin-echo sequences for rotator cuff integrity. Surgical data were available for 26 patients, and clinical follow-up for another 37. For complete rotator cuff tear in the surgical subpopulation, sensitivity was 89%, specificity was 94%, and diagnostic accuracy was 24 of 26 (92%). We found no diagnostically significant difference between the two imaging sequences for fluid conspicuity, coracoacromial morphology, or marrow signal. Signal-to-noise ratios were superior in the turbo spin-echo sequences.Turbo spin-echo sequences are an accurate and efficient tool in the MR imaging evaluation of the rotator cuff. Potential benefits include time saving, increased spatial resolution, and improved signal-to-noise ratio. |
| Databáze: | OpenAIRE |
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