Tractografía y tensor de difusión en el estudio por resonancia magnética del nervio mediano. reporte de un caso

Abstract

Introduction: Magnetic Resonance Imaging (MRI) is an essential tool for the study of central nervous system disorders. Several studies consider the application of diffusion tensor imaging (DTI) and tractography in the study of peripheral nerves. Methodology: We performed tractography and DTI in two female patients, one with a confirmed carpal tunnel syndrome and the other in good health conditions. Values of fractional anisotropy (FA) and apparent diffusion coefficient (ADC) were recorded. Results: The average FA value of the fiber was 0.461 (case) and 0.632 (control). No differences were reported between the average values of the ADC of the fiber. Discussion: We were able to represent the tract of the median nerve by using a software for tractography reconstruction. The morphology and values of quantitative analysis of DTI depend directly on the reconstruction algorithm used, mainly on the minimum FA value of the fiber to be reconstructed. The value of the FA, obtained by zone, was the most constant variable, being lower for the case.