Publicação
Fat saturation in breast dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI): comparison between DIXON and SPAIR techniques
| Resumo: | Introduction – Breast MRI with contrast injection is an indispensable tool for the characterization of breast lesions. To achieve this, good fat saturation is important in order to delimit the lesions. This study aims to assess quantitatively and qualitatively the fat saturation techniques in breast MRI, including SPAIR and Dixon techniques. Materials and methods – The study was performed in 1.5T MRI equipment and a specific breast coil was used. The study included an additional sequence with the Dixon fat saturation technique. Subsequently, the images obtained were analyzed and specific ROI was placed in the lesion, mammary gland, adipose tissue, and air, for both SPAIR and Dixon technique images. The obtained signal values were registered and, the SNR, CNR, and uniformity of fat saturation were calculated for all mentioned structures. Results – It was found that the fat suppression technique Dixon quantitative and qualitative results are better than the technique SPAIR. Conclusions – From this study, the use of the Dixon technique for fat saturation is recommended in the dynamic study sequences with contrast agents, specifically in breast MRI studies. |
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| Autores principais: | Rosa, Regina |
| Outros Autores: | Ferreira, Hugo |
| Assunto: | Imagem por ressonância magnética da mama Cancro da mama Saturação de gordura Dixon Breast magnetic resonance imaging Breast cancer Fat saturation Dixon |
| Ano: | 2014 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | unknown |
| Instituição associada: | Instituto Politécnico de Lisboa Escola Superior de Tecnologia da Saúde de Lisboa |
| Idioma: | português |
| Origem: | Saúde & Tecnologia |
| Resumo: | Introduction – Breast MRI with contrast injection is an indispensable tool for the characterization of breast lesions. To achieve this, good fat saturation is important in order to delimit the lesions. This study aims to assess quantitatively and qualitatively the fat saturation techniques in breast MRI, including SPAIR and Dixon techniques. Materials and methods – The study was performed in 1.5T MRI equipment and a specific breast coil was used. The study included an additional sequence with the Dixon fat saturation technique. Subsequently, the images obtained were analyzed and specific ROI was placed in the lesion, mammary gland, adipose tissue, and air, for both SPAIR and Dixon technique images. The obtained signal values were registered and, the SNR, CNR, and uniformity of fat saturation were calculated for all mentioned structures. Results – It was found that the fat suppression technique Dixon quantitative and qualitative results are better than the technique SPAIR. Conclusions – From this study, the use of the Dixon technique for fat saturation is recommended in the dynamic study sequences with contrast agents, specifically in breast MRI studies. |
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