Usefulness of diffusion-weighted imaging for differentiating between desmoid tumors and malignant soft tissue tumors.
J Magn Reson Imaging
; 33(1): 189-93, 2011 Jan.
Article
en En
| MEDLINE
| ID: mdl-21182138
ABSTRACT
PURPOSE:
To evaluate the usefulness of diffusion-weighted imaging (DWI) for differentiating between desmoid tumors and malignant soft tissue tumors. MATERIALS ANDMETHODS:
Conventional MRI and DWI were performed for 8 desmoid tumors and 74 malignant soft tissue tumors. DWI was obtained with a single-shot echo-planar imaging sequence using a 1.5 Tesla (T) MR imager. DW images were acquired with motion-probing gradient pulses applied along three directions (x, y, and z axes) with three b-factors (0, 500, and 1000 s/mm²). Two observers blinded to clinical information measured three regions of interest within the solid tumor and selected a minimum apparent diffusion coefficient () in each lesion. The mean ADC of desmoid tumors was calculated and compared with that of malignant soft tissue tumors using the Mann-Whitney U test.RESULTS:
The mean ADC of desmoid tumors and malignant soft tissue tumors was 1.36 ± 0.48 × 10⻳ mm² /s and 0.88 ± 0.20 × 10⻳ mm² /s (mean ± SD), respectively. The mean ADC of the desmoid tumors was significantly higher than that of malignant soft tissue tumors (P < 0.01).CONCLUSION:
DWI is considered to be useful for differentiating between desmoid tumors and malignant soft tissue tumors. In the future, further investigation in a large series is necessary.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Neoplasias de los Tejidos Blandos
/
Fibromatosis Agresiva
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Imagen de Difusión por Resonancia Magnética
Tipo de estudio:
Diagnostic_studies
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Evaluation_studies
Límite:
Adolescent
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Adult
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Aged
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Aged80
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Child
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
J Magn Reson Imaging
Asunto de la revista:
DIAGNOSTICO POR IMAGEM
Año:
2011
Tipo del documento:
Article
País de afiliación:
Japón