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Vertebral bone marrow perfusion evaluated with dynamic contrast-enhanced MR imaging: significance of aging and sex.
Chen, W T; Shih, T T; Chen, R C; Lo, S Y; Chou, C T; Lee, J M; Tu, H Y.
Afiliação
  • Chen WT; Department of Radiology, Taipei Municipal Jen-Ai Hospital, Taipei, Taiwan.
Radiology ; 220(1): 213-8, 2001 Jul.
Article em En | MEDLINE | ID: mdl-11426000
PURPOSE: To investigate blood perfusion of nonfractured, normal-appearing vertebral bodies with regard to age and sex. MATERIALS AND METHODS: Dynamic magnetic resonance imaging (160 images obtained in 80 seconds) was performed from T10 to L5 in 66 patients. Patients were assigned to three groups: group 1, those 50 years or younger without compression fracture; group 2, those older than 50 years without compression fracture; or group 3, those older than 50 years with compression fracture. Peak enhancement percentage and enhancement slope were determined from the time-intensity curve of normal (nonfractured) vertebral body. Comparisons were made between groups, and the effect of age and sex interaction was analyzed. RESULTS: Higher peak enhancement percentage was demonstrated for group 1 compared with group 2 (58.21 +/- 44.65 [SD] vs 21.88 +/- 14.77, P <.005). Group 1 women revealed a higher enhancement percentage compared with group 1 men (87.17 +/- 54.13 vs 38.16 +/- 21.69, P <.05), which significantly decreased in those older than 50 years (from 87.17 +/- 54.13 to 17.98 +/- 13.80, P <.005). For men, this decrease in those older than 50 years was not as pronounced (from 38.16 +/- 21.69 to 25.38 +/- 15.43, P >.05). Presence of compression fracture at other levels of the spine (group 3) was not associated with a different enhancement percentage for normal vertebrae. CONCLUSION: Rate of vertebral bone marrow perfusion revealed a significant decrease in subjects older than 50 years. Women demonstrated a higher marrow perfusion rate than men younger than 50 years and a more marked decrease than men older than 50 years.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Coluna Vertebral / Medula Óssea / Envelhecimento / Imageamento por Ressonância Magnética / Aumento da Imagem / Fraturas da Coluna Vertebral Tipo de estudo: Clinical_trials / Diagnostic_studies / Etiology_studies / Risk_factors_studies Limite: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: Radiology Ano de publicação: 2001 Tipo de documento: Article
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Coluna Vertebral / Medula Óssea / Envelhecimento / Imageamento por Ressonância Magnética / Aumento da Imagem / Fraturas da Coluna Vertebral Tipo de estudo: Clinical_trials / Diagnostic_studies / Etiology_studies / Risk_factors_studies Limite: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: Radiology Ano de publicação: 2001 Tipo de documento: Article