Osteomyelitis imaging findings: Difference between revisions
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==Imaging Findings== | ==Imaging Findings== | ||
Diagnosis of osteomyelitis is often based on [[radiology|radiologic]] results showing a [[lytic]] center with a ring of [[sclerosis]], though bone cultures are normally required to identify the specific pathogen<ref name="Robbins" />. | |||
*Conventional radiographic evaluation of acute osteomyelitis is insufficient because bone changes are not evident for 14–21 days after the onset of infection. | *Conventional radiographic evaluation of acute osteomyelitis is insufficient because bone changes are not evident for 14–21 days after the onset of infection. | ||
*Although MR imaging is the accepted modality of choice for the early detection and surgical localization of osteomyelitis, in the emergency department, CT is usually more readily available for establishing the diagnosis. <ref>Laura M. Fayad, John A. Carrino, and Elliot K. Fishman. [http://radiographics.rsnajnls.org/cgi/content/abstract/27/6/1723 Musculoskeletal Infection: Role of CT in the Emergency Department.] RadioGraphics 2007 27: 1723-1736.</ref> | *Although MR imaging is the accepted modality of choice for the early detection and surgical localization of osteomyelitis, in the emergency department, CT is usually more readily available for establishing the diagnosis. <ref>Laura M. Fayad, John A. Carrino, and Elliot K. Fishman. [http://radiographics.rsnajnls.org/cgi/content/abstract/27/6/1723 Musculoskeletal Infection: Role of CT in the Emergency Department.] RadioGraphics 2007 27: 1723-1736.</ref> | ||
Revision as of 15:57, 27 November 2012
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Imaging Findings
Diagnosis of osteomyelitis is often based on radiologic results showing a lytic center with a ring of sclerosis, though bone cultures are normally required to identify the specific pathogen[1].
- Conventional radiographic evaluation of acute osteomyelitis is insufficient because bone changes are not evident for 14–21 days after the onset of infection.
- Although MR imaging is the accepted modality of choice for the early detection and surgical localization of osteomyelitis, in the emergency department, CT is usually more readily available for establishing the diagnosis. [2]
- At CT, features of bacterial osteomyelitis include overlying soft-tissue swelling, periosteal reaction, medullary low-attenuation areas or trabecular coarsening, and focal cortical erosions.
MRI
Patient #1 Extensive calcaneal osteomyelitis. Note soft tissue ulceration and cellulitis
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T1
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STIR
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T1
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STIR
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T1 fat sat contrast
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T1 fat sat contrast
Bone Scan
Patient #2
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Blood pool
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Delayed
{{#ev:youtube|X2ShDUfeso0}}
References
- ↑
- ↑ Laura M. Fayad, John A. Carrino, and Elliot K. Fishman. Musculoskeletal Infection: Role of CT in the Emergency Department. RadioGraphics 2007 27: 1723-1736.