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Single breath-hold multiarterial dynamic MRI of the liver at 3T using a 3D fat-suppressed keyhole technique.
Hong, Hye-Suk; Kim, Hua Sun; Kim, Myeong-Jin; De Becker, Jan; Mitchell, Donald G; Kanematsu, Masayuki.
Afiliación
  • Hong HS; Department of Diagnostic Radiology, Yonsei University College of Medicine, Research Institute of Radiological Science, Severance Hospital, Seoul, Republic of Korea.
J Magn Reson Imaging ; 28(2): 396-402, 2008 Aug.
Article en En | MEDLINE | ID: mdl-18666146
PURPOSE: To evaluate the feasibility of single breath-hold, multiarterial MRI of the liver using the THRIVE-CENTRA-keyhole technique. MATERIALS AND METHODS: Twenty-eight patients with 63 focal hepatic lesions underwent liver MR examinations that included the three-dimensional THRIVE-CENTRA-keyhole sequence. Three or six phases were obtained for arterial phase scanning during a single breath-hold. Central k-space data were collected for each phase but the remaining peripheral k-space data were collected only once. The enhancement pattern of each hepatic lesion was analyzed according to the specific diagnosis. RESULTS: Hepatocellular carcinomas (n = 24) enhancement patterns included: rim enhancing (n = 9), homogeneous (n = 7), nodule-in-nodule (n = 5), or heterogeneous (n = 3). A late peritumoral rim was observed in four (17%) of the hepatocellular carcinomas. Most metastases (17 of 18; 94%) demonstrated peripheral rim enhancement. The progressive centripetal enhancement of hemangiomas (n = 6) was clearly depicted. Focal nodular hyperplasia (n = 4) showed early homogeneous enhancement and one lesion demonstrated a central scar. CONCLUSION: The THRIVE-CENTRA-keyhole technique can be used to acquire single breath-hold, multiarterial images depicting improved enhancement characteristics of focal hepatic lesions. This technique will allow accurate timing of arterial scanning with 3D acquisition and high temporal resolution.
Asunto(s)

Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Imagen por Resonancia Magnética / Aumento de la Imagen / Imagenología Tridimensional / Hepatopatías Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Revista: J Magn Reson Imaging Asunto de la revista: DIAGNOSTICO POR IMAGEM Año: 2008 Tipo del documento: Article

Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Imagen por Resonancia Magnética / Aumento de la Imagen / Imagenología Tridimensional / Hepatopatías Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Revista: J Magn Reson Imaging Asunto de la revista: DIAGNOSTICO POR IMAGEM Año: 2008 Tipo del documento: Article