SciELO - Scientific Electronic Library Online

 
vol.14 número1HEMATOMA SUBCAPSULAR HEPATICO POR FASCIOLASISAVULSION TRAUMÁTICA RADICULAR LUMBAR: CASO CLÍNICO DE INTERÉS índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Revista chilena de radiología

versión On-line ISSN 0717-9308

Resumen

CISTERNAS E, Jaime et al. DEVELOPMENT AND START-UP OF A TRACTOGRAPHY SOFTWARE. Rev. chil. radiol. [online]. 2008, vol.14, n.1, pp.31-35. ISSN 0717-9308.  http://dx.doi.org/10.4067/S0717-93082008000100007.

Diffusion weighted MRI can measure the random motion of water molecules in biological tissue. These motions are captured using magnetic gradients that dephase the precession of water molecules that move along the direction of the gradient. Dephasings show up as small attenuations in signal intensity.This information can be used in tissues such as muscles, spine, medulla and white matter to measure the ani-sotropy and assess fiber integrity. In this work, a new software for the post-processing of diffusion weighted MRI is presented.The software can read dataseis from a variety of scanners. Diffusion is modeled using ellipsoids that are represented mathematically by means of a tensor, estimated from entry dataset. Various indices such as diffusion tensor eigenvalues, fractional anisotropy, types of anisotropy, mean diffu-sivity, and principal directions are computed. Results are interactively visualized by using axial planes or a three-dimensional approach. The software includes a nerve fiber tracing module. This tool works on PC-based workstations through a graphical user interface or by using the command line

Palabras clave : Anisotropy; Diffusion imaging; Diffusion Tensor Imaging; Magnetic Resonance Imaging; Tractography.

        · 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