Diabetic foot MRI
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Anahita Deylamsalehi, M.D.[2]
Overview
Magnetic resonance imaging (MRI) is specific for osteomyelitis diagnosis. This imaging modality has 90% sensitivity and 85% specificity in diagnosis of diabetic foot ulcers. While MRI is very efficient in diagnosis of diabetic foot, its usage with contrast materials such as gadolinium is not recommended in diabetic patients with evidences of renal diseases. Magnetic resonance angiography (MRA) can be helpful in evaluation of limb perfusion. Nevertheless, it has limited spatial resolution and reports could be influenced by previous stents or implants.
MRI
- Magnetic resonance imaging (MRI) is specific for osteomyelitis diagnosis. This imaging modality has 90% sensitivity and 85% specificity in diagnosis of diabetic foot ulcers.[1][2]
- Usage of contrast materials such as gadolinium is not recommended in diabetic patients with renal problems due to high risk of renal failure.[3][4]
- Magnetic resonance imaging (MRI) has better efficacy in differentiating soft tissue from bone, compared to the CT scan. Soft tissue edema is one of the common findings of diabetic foot in an MRI.[2]
- Magnetic resonance angiography (MRA) can be helpful in evaluation of limb perfusion. Nevertheless, it has limited spatial resolution and reports could be influenced by previous stents or implants.[5]
- Magnetic resonance angiography (MRA) has 94% specificity and sensitivity for peripheral arteries.[6][7]
- Although nephrotoxicity is lower in contrast-enhanced magnetic resonance angiography (CE-MRA), it is relatively contraindicated in patients with creatinine lower than 30 mL/min.[8]
Examples of MRI Findings in Diabetic Foot
References
- ↑ Lipsky BA (1997). "Osteomyelitis of the foot in diabetic patients". Clin Infect Dis. 25 (6): 1318–26. doi:10.1086/516148. PMID 9431370.
- ↑ 2.0 2.1 Giurato L, Meloni M, Izzo V, Uccioli L (2017). "Osteomyelitis in diabetic foot: A comprehensive overview". World J Diabetes. 8 (4): 135–142. doi:10.4239/wjd.v8.i4.135. PMC 5394733. PMID 28465790.
- ↑ Prince, Martin R.; Zhang, Honglei; Morris, Michael; MacGregor, Jennifer L.; Grossman, Marc E.; Silberzweig, Jeffrey; DeLapaz, Robert L.; Lee, Henry J.; Magro, Cynthia M.; Valeri, Anthony M. (2008). "Incidence of Nephrogenic Systemic Fibrosis at Two Large Medical Centers". Radiology. 248 (3): 807–816. doi:10.1148/radiol.2483071863. ISSN 0033-8419.
- ↑ Rydahl, Casper; Thomsen, Henrik S.; Marckmann, Peter (2008). "High Prevalence of Nephrogenic Systemic Fibrosis in Chronic Renal Failure Patients Exposed to Gadodiamide, a Gadolinium-Containing Magnetic Resonance Contrast Agent". Investigative Radiology. 43 (2): 141–144. doi:10.1097/RLI.0b013e31815a3407. ISSN 0020-9996.
- ↑ Lepäntalo, M.; Apelqvist, J.; Setacci, C.; Ricco, J.-B.; de Donato, G.; Becker, F.; Robert-Ebadi, H.; Cao, P.; Eckstein, H.H.; De Rango, P.; Diehm, N.; Schmidli, J.; Teraa, M.; Moll, F.L.; Dick, F.; Davies, A.H. (2011). "Chapter V: Diabetic Foot". European Journal of Vascular and Endovascular Surgery. 42: S60–S74. doi:10.1016/S1078-5884(11)60012-9. ISSN 1078-5884.
- ↑ Schaper, N. C.; Andros, G.; Apelqvist, J.; Bakker, K.; Lammer, J.; Lepantalo, M.; Mills, J. L.; Reekers, J.; Shearman, C. P.; Zierler, R. E.; Hinchliffe, R. J. (2012). "Diagnosis and treatment of peripheral arterial disease in diabetic patients with a foot ulcer. A progress report of the International Working Group on the Diabetic Foot". Diabetes/Metabolism Research and Reviews. 28: 218–224. doi:10.1002/dmrr.2255. ISSN 1520-7552.
- ↑ Koelemay MJ, Lijmer JG, Stoker J, Legemate DA, Bossuyt PM (2001). "Magnetic resonance angiography for the evaluation of lower extremity arterial disease: a meta-analysis". JAMA. 285 (10): 1338–45. doi:10.1001/jama.285.10.1338. PMID 11255390.
- ↑ Chammas, N. K.; Hill, R. L. R.; Edmonds, M. E. (2016). "Increased Mortality in Diabetic Foot Ulcer Patients: The Significance of Ulcer Type". Journal of Diabetes Research. 2016: 1–7. doi:10.1155/2016/2879809. ISSN 2314-6745.
- ↑ https://radiopaedia.org/cases/diabetic-foot-5?lang=us