Diagnostic performance of susceptibility-weighted magnetic resonance imaging for the assessment of sub-coracoacromial spurs causing subacromial impingement syndrome
Noerenberg D, Armbruster M, Bender YN, Walter T, Ebersberger HU, Diederichs G, Hamm B, Ockert B, Makowski MR (2017)
Publication Type: Journal article
Publication year: 2017
Journal
Book Volume: 27
Pages Range: 1286-1294
Journal Issue: 3
DOI: 10.1007/s00330-016-4441-0
Abstract
Objectives: To evaluate the potential of susceptibility-weighted-magnetic-resonance-imaging (SWMR) for the detection of sub-coracoacromial spurs in patients with clinically suspected subacromial impingement syndrome (SAIS), compared to standard MR-sequences and radiographs. Methods: Forty-four patients with suspected SAIS were included. All patients underwent radiography, standard MRI of the shoulder and SWMR. Radiograph-based identification of sub-coracoacromial spurs served as goldstandard. Radiographs identified twenty-three spurs in twenty-three patients. Twenty-one patients without spur formation served as reference group. Detection rate, sensitivity/specificity and interobserver-agreements were calculated. Linear regression was applied to determine the relationship between size measurements on radiographs and MRI. Results: Detection rates for spurs on standard MRI and SWMR were 47.8 % and 91.3 % compared to radiography (p<0.001). SWMR demonstrated a sensitivity of 97.7 % (CI=0.92-1) and a specificity of 91.3 % (CI=0.788-1) for the identification of spurs. Standard MR-sequences achieved a sensitivity of 47.8 % (CI=0.185-0.775) and a specificity of 80.8 % (CI=0.642-0.978). Size measurements between SWMR and radiography showed a good correlation (R2=0.75;p<0.0001), while overestimating lesion size (5.7±1.2 mm; 4.3±1.3 mm;p<0.0001). Interobserver-agreement for spurs was high on SWMR (R2=0.74;p<0.0001), but low on standard MRI (R2=0.24;p<0.0001). Conclusions: SWMR allows a reliable detection of sub-coracoacromial spur formation in patients with SAIS and is superior to standard MR-sequences using radiography as goldstandard. Key Points: • SWMR has the potential to reliably identify sub-coracoacromial spurs without radiation exposure. • SWMR provides comparable detection rates to conventional radiography for sub-coracoacromial spur formation. • SWMR yields higher detection rates compared to standard-MR regarding sub-coracoacromial spur formation. • SWMR can be implemented in routine shoulder MRI protocols.
Involved external institutions
Klinikum der Universität München
Germany (DE)
Charité - Universitätsmedizin Berlin
Germany (DE)
Deutsches Herzzentrum München
Germany (DE)
Germany (DE)
Charité - Universitätsmedizin Berlin
Germany (DE)
Deutsches Herzzentrum München
Germany (DE)
How to cite
APA:
Noerenberg, D., Armbruster, M., Bender, Y.-N., Walter, T., Ebersberger, H.U., Diederichs, G.,... Makowski, M.R. (2017). Diagnostic performance of susceptibility-weighted magnetic resonance imaging for the assessment of sub-coracoacromial spurs causing subacromial impingement syndrome. European Radiology, 27(3), 1286-1294. https://doi.org/10.1007/s00330-016-4441-0
MLA:
Noerenberg, Dominik, et al. "Diagnostic performance of susceptibility-weighted magnetic resonance imaging for the assessment of sub-coracoacromial spurs causing subacromial impingement syndrome." European Radiology 27.3 (2017): 1286-1294.
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