The Usefulness of Diffusion-weighted MR Imaging for Differentiation between Degenerative Spines and Infectious Spondylitis
Journal of the Korean Society of Magnetic Resonance in Medicine
;
: 152-157, 2002.
Artigo
em Coreano
| WPRIM
| ID: wpr-175542
ABSTRACT
PURPOSE:
The differential diagnosis between Modic type I degenerative spine and infectious spondylitis sometimes is difficult, because the affected bone marrows in both disease show similar signal intensity on conventional MR imaging. We evaluate the usefulness of diffusion-wighted MR imaging for differential diagnosis between Modic type I degenerative spine and infectious spondylitis. MATERIALS ANDMETHODS:
The spin-echo and diffusion-weighted MR images of eight patients with Modic type I degenerative spines and 14 patients with infectious spondylitis diagnosed by clinical findings or CTguided biopsies were analyzed. The diffusion-weighted imaging sequence was based on reversed fast imaging with steady-state precession (PSIF). Signal intensity changes of the vertebral bone marrow on conventional spin-echo and diffusion-weighted MR imaging were compared between degenerative spine and infectious spondylitis.RESULTS:
On T1-weighted images, the affeted bone marrow in both disease showed hypointense signals. On T2-weighted images, all of type I degenerative spine and 11 of infectious spondylitis showed hyperintensity, and three of infectious spondylitis showed heterogeneous mixed signal intensity. On diffusionweighted MR images, all of type I degenerative spine were hypointense with peripheral high signal intensity to normal vertebral body, but infectious spondylitis was hyperintense (n=11) and hypointense (n=3).CONCLUSION:
Diffusion-weighted MR imaging is useful to differentiate Modic type I degenerative spine from infectious spondylitis. On diffusion-weighted images, the high singal intensity of bone marrow suggests infectious spondylitis, whereas the low signal intensity of bone marrow with peripheral focal high signal intensity suggests type I degenerative spine.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Coluna Vertebral
/
Espondilite
/
Biópsia
/
Medula Óssea
/
Imageamento por Ressonância Magnética
/
Diagnóstico Diferencial
Tipo de estudo:
Estudo diagnóstico
Limite:
Humanos
Idioma:
Coreano
Revista:
Journal of the Korean Society of Magnetic Resonance in Medicine
Ano de publicação:
2002
Tipo de documento:
Artigo
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