Intravoxel incoherent motion MR imaging of early cervical carcinoma: correlation between imaging parameters and tumor-stroma ratio.
Eur Radiol
; 28(5): 1875-1883, 2018 May.
Article
em En
| MEDLINE
| ID: mdl-29222676
OBJECTIVES: To investigate if intravoxel incoherent motion (IVIM) MR imaging can predict the tumour-stroma ratio (TSR) in patients with early cervical carcinoma. METHODS: Fifty-four patients with early cervical carcinoma were prospectively enrolled into this study. All patients underwent IVIM imaging and parameters including D, D* and f value were measured. The tumours were classified into stroma-rich and stroma-poor group according to TSR, and comparisons of IVIM parameters between two groups were performed. The relationships between IVIM parameters and TSR were analysed by using a multivariate multi-regression analysis. RESULTS: D and f values were significantly lower in stroma-poor tumours than in stroma-rich tumours (p=0.02, 0.04), while the difference in D* value between two groups didn't achieve statistical significance (p=0.09). The areas under ROC curves of D and f values in discriminating stroma-rich and stroma-poor tumours were 0.835 (95%CI=0.616~0.905) and 0.686 (95%CI=0.575~0.798). In multiple linear regression analysis, D value, pathologic type, histologic grade, tumour size and f value were independently correlated with TSR of cervical carcinoma. CONCLUSIONS: D and f values are independently correlated with TSR of cervical carcinoma and have the potential for quantitative measurement of TSR. KEY POINTS: ⢠TSR is a recognized independent prognostic factor in many solid tumours. ⢠D and f values measured by IVIM MRI are independently correlated with TSR while D* is not. ⢠IVIM offers the potential to predict TSR.
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Texto completo:
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias do Colo do Útero
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Colo do Útero
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Meios de Contraste
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Imagem de Difusão por Ressonância Magnética
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Diagnóstico Precoce
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Estadiamento de Neoplasias
Tipo de estudo:
Diagnostic_studies
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Prognostic_studies
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Screening_studies
Limite:
Adult
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Female
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Humans
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Middle aged
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article