SciELO - Scientific Electronic Library Online

vol.21 número1La circulación cerebral en condiciones normales y patológicas: Parte I: hipertensión endocraneana e isquemia secundariaDiagnóstico de muerte encefálica: evitando errores índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




  • No hay articulos citadosCitado por SciELO

Links relacionados

  • No hay articulos similaresSimilares en SciELO


Revista argentina de neurocirugía

versión On-line ISSN 1850-1532


ROMERO, Carlos; GHISI, Juan Pablo; MAZZUCCO, Juan  y  TERNAK, Alejandro. Imágenes con tensor de difusión en resonancia magnética. Rev. argent. neurocir. [online]. 2007, vol.21, n.1. ISSN 1850-1532.

Diffusion-tensor is a recently developed form of diffusion-weighted MRI that enables the assessment of water directionality in living systems and indirect information about the integrity of white matter structures. Diffusion is anisotropic in white matter tracts, as axonal membranes and myelin sheaths present barriers to the motion of water molecules; the direction of maximun diffusivity is contained in the diffusion tensor (DT). DT tractograms are the three-dimensional space representation of the tensor-diffusion images. The direction of maximun diffusivity may be mapped by using red, green, and blue colour channels with colour brightness, resulting in a map from wich the degree of anisotropy and the local fiber direction can be determined. Red color indicates left-right direction as corpus callosum tracts; green color indicates anteroposterior direction, and blue color indicates superior-inferior direction as piramidal tracts. The initial clinical experience showed that diffusion tensor is a potentially useful imaging modality for both diagnosing and assessing patients with stroke, multiple sclerosis, diffuse axonal injuries, schizophrenia and particularly brain tumors.

Palabras clave : Magnetic resonance; Diffusion tensor; Tractograms.

        · resumen en Español     · texto en Español     · Español ( pdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons