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. 2006 Oct 30;10(5):R152. doi: 10.1186/cc5083

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Copyright © 2006 Argyropoulou et al.; licensee BioMed Central Ltd.

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Late magnetic resonance imaging (MRI) findings of heterotopic ossification (HO). HO in the left knee of a 32-year-old male patient hospitalised in the intensive care unit for traumatic brain injury. MRI performed 4 weeks after clinical suspicion of HO. (a) Sagittal fast spin-echo short inversion-recovery MR image (3,000/80; inversion time, 165 milliseconds) shows heterogeneous high signal of the innermost part of the vastus medialis muscle (arrow). (b) Sagittal T1-weighted spin-echo MR image (650/17) shows heterogeneous high signal of the innermost part of the vastus medialis muscle (arrow). (c) Sagittal contrast-enhanced fat-suppressed T1-weighted spin-echo MR image (650/17) shows heterogeneous enhancement of the innermost part of the vastus medialis muscle (arrow).