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Dental MRI using a dedicated RF-coil at 3 Tesla.
Prager, Marcel; Heiland, Sabine; Gareis, Daniel; Hilgenfeld, Tim; Bendszus, Martin; Gaudino, Chiara.
Afiliación
  • Prager M; Division of Experimental Radiology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany; Department of Neuroradiology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany. Electronic address: marcel.prager@med.uni-heidelberg.de.
  • Heiland S; Division of Experimental Radiology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany; Department of Neuroradiology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
  • Gareis D; NORAS MRI Products GmbH, Leibnizstraße 4, 97204 Höchberg, Germany.
  • Hilgenfeld T; Department of Neuroradiology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
  • Bendszus M; Department of Neuroradiology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
  • Gaudino C; Department of Neuroradiology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
J Craniomaxillofac Surg ; 43(10): 2175-82, 2015 Dec.
Article en En | MEDLINE | ID: mdl-26548530
PURPOSE: To assess the benefit of a dedicated surface coil to visualize dental structures in comparison to standard head/neck coil. METHODS: Measurements were performed using the standard head/neck coil and a dedicated array coil for dental MRI at 3 T. As MRI methods, we used a T1-weighted spin-echo sequence with and without spectral fat saturation, a T2-weighted turbo-spin-echo sequence and a 3-dimensional T2-weighted SPACE sequence. Measurements were performed in a phantom to examine sensitivity profiles. Then the signal gain in dental structures was examined in volunteers and in a patient. RESULTS: As expected for a surface coil, the signal gain of the dental coil was highest at the surface of the phantom and decreased with increasing distance to the coil; it was >120% even at a depth of 30 mm, measured from the centre of the coil. The signal gain within the pulp of the volunteers ranged between 236 and 413%. CONCLUSION: The dedicated array coil offers a significantly higher signal within the region of interest for dental MR imaging thus allowing for better depiction of pathologies within the periodontium and for delineation and tracking of the branches of the maxillary and mandibular nerves.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Imagen por Resonancia Magnética / Pulpa Dental Límite: Humans Idioma: En Revista: J Craniomaxillofac Surg Asunto de la revista: ODONTOLOGIA Año: 2015 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Imagen por Resonancia Magnética / Pulpa Dental Límite: Humans Idioma: En Revista: J Craniomaxillofac Surg Asunto de la revista: ODONTOLOGIA Año: 2015 Tipo del documento: Article Pais de publicación: Reino Unido