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Fat suppression techniques for breast MRI: Dixon versus spectral fat saturation for 3D T1-weighted at 3 T.
Kalovidouri, Anastasia; Firmenich, Natacha; Delattre, Benedicte M A; Picarra, Marlise; Becker, Christoph D; Montet, Xavier; Botsikas, Diomidis.
Afiliación
  • Kalovidouri A; Radiology Department, Geneva University Hospital, Rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland. anastasie-marie.kalovidouri@hcuge.ch.
  • Firmenich N; Radiology Department, Geneva University Hospital, Rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland.
  • Delattre BMA; Radiology Department, Geneva University Hospital, Rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland.
  • Picarra M; Radiology Department, Geneva University Hospital, Rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland.
  • Becker CD; Radiology Department, Geneva University Hospital, Rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland.
  • Montet X; Radiology Department, Geneva University Hospital, Rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland.
  • Botsikas D; Radiology Department, Geneva University Hospital, Rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland.
Radiol Med ; 122(10): 731-742, 2017 Oct.
Article en En | MEDLINE | ID: mdl-28643295
OBJECTIVE: To compare two fat suppression techniques used for 3D T1-weighted sequence in breast MRI (magnetic resonance imaging), namely Dixon versus spectral fat saturation (fat sat). MATERIALS AND METHODS: All breast MRI examinations performed in a Philips 3 T unit between March 2013 and October 2015 including either a Dixon or a fat sat sequence were retrospectively analyzed. The examinations were subjectively evaluated by two independent experienced readers in a scale of 5 for overall quality of fat suppression, homogeneity of fat suppression, definition of anatomic structures and focal lesions, diagnostic confidence for axillary and internal mammary regions and the presence of artifacts, 1 corresponding to excellent and 5 to non-diagnostic quality. Contrast-to-noise-ratio (CNR) measurements for muscle and focal lesions were also performed. RESULTS: Overall 161 women (mean age 51.6 ± 12.0 years) underwent 189 MR examinations, 113 with the fat saturation and 76 with the Dixon sequence. Interobserver variability was good (kappa = 0.757). In all subjectively evaluated parameters, the Dixon sequence was superior to the fat sat (p < 0.05). Mean values of CNR for muscle and focal lesions were 9.98 (±4.2), 17.9 (±7.53) for the fat sat and 18.3 (±10.4) and 29.3 (±14.1) for the Dixon sequence, respectively (p < 0.001). CONCLUSION: 3D T1 Dixon sequence is superior to fat sat for dedicated breast MRI at 3 T, in terms of efficiency of fat suppression and image quality with the added advantage of optimal exploration of the axillary areas.
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Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Neoplasias de la Mama / Imagen por Resonancia Magnética / Aumento de la Imagen / Tejido Adiposo Tipo de estudio: Observational_studies Límite: Female / Humans / Middle aged Idioma: En Revista: Radiol Med Año: 2017 Tipo del documento: Article País de afiliación: Suiza

Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Neoplasias de la Mama / Imagen por Resonancia Magnética / Aumento de la Imagen / Tejido Adiposo Tipo de estudio: Observational_studies Límite: Female / Humans / Middle aged Idioma: En Revista: Radiol Med Año: 2017 Tipo del documento: Article País de afiliación: Suiza