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Congress: ECR26
Poster Number: C-16569
Type: Poster: EPOS Radiologist (educational)
Authorblock: A. M. Rodriguez Saldivar, M. Mercado Flores, H. Maya García, B. A. Cortes, A. F. Ríos Victoria; Monterrey/MX
Disclosures:
Arturo Maximiliano Rodriguez Saldivar: Nothing to disclose
Mariana Mercado Flores: Nothing to disclose
Haziel Maya García: Nothing to disclose
Bryann Alejandro Cortes: Nothing to disclose
Andres Felipe Ríos Victoria: Nothing to disclose
Keywords: Anatomy, CNS, Neuroradiology brain, MR-Diffusion/Perfusion, MR-Functional imaging, Physics, Tissue characterisation
Learning objectives The primary objective of this scientific exhibit is to provide an in-depth radiologic journey through the complex architecture of cerebral white matter. By leveraging advanced Diffusion Tensor Imaging (DTI) and tractography, this work seeks to: Elucidate the physical, mathematical, and technical foundations of DTI, from the concept of Brownian motion to the generation of the diffusion tensor. Detailed the methodology behind tractography reconstruction, including seed placement, tracking algorithms (deterministic vs. probabilistic), and the importance of region-of-interest (ROI) selection. Provide a systematic, step-by-step anatomical...
Read more Background Historical Context: From Vesalius to WillisThe study of white matter has transitioned from gross dissection to sophisticated digital reconstruction. While Andreas Vesalius in the 16th century provided the first glimpses into the brain’s internal structure, it was Thomas Willis in the 17th century who revolutionized our understanding. Willis moved beyond the idea of the "ventricular soul" to propose that the white matter was a functional tissue capable of transmitting signals. His meticulous dissections laid the groundwork for what we now...
Read more Findings and procedure details The white matter is organized into three distinct functional groups [fig 7] , which we describe in the sequence of their clinical and surgical importance1. Association Fibers: The Intra-hemispheric CommunicatorsThese tracts connect different cortical areas within the same hemisphere, enabling complex cognitive tasks. Superior Longitudinal Fasciculus (SLF): A massive bundle divided into three segments (SLF I, II, and III). It is the backbone of the "Where" visual pathway and visuospatial attention. [fig 21] , [fig 22] , [fig 23] . Arcuate Fasciculus: Historically the most famous tract....
Read more Conclusion As Thomas Willis intuited centuries ago, the brain’s function is not found in its hollow spaces but in its structural connections. The transition from the anecdotal clinical observations of Baudelaire’s "Sacre Bleu" or Phineas Gage’s personality shift to modern, color-coded DTI maps represents one of the greatest leaps in neuro-radiology.Tractography, through the careful selection of seeds and tracking parameters, transforms MRI from a static anatomical picture into a dynamic map of the mind’s "bridges." For the modern radiologist and neurosurgeon,...
Read more Personal information Arturo Maximiliano Rodriguez Saldivar , ORCID: 0009-0004-6176-8088
Read more References Vesalius A. De humani corporis fabrica libri septem. Basel: Johannes Oporinus; 1543. Willis T. Cerebri anatome: cui accessit nervorum descriptio et usus. London: Martyn & Allestry; 1664. Le Bihan D, Mangin JF, Poupon C, et al. Diffusion tensor imaging: concepts and applications. J Magn Reson Imaging. 2001;13(4):534-546. Mori S, Zhang J. Principles of diffusion tensor imaging and its applications to basic neuroscience research. Neuron. 2006;51(5):527-539. Catani M, Mesulam M. The arcuate fasciculus and the disconnection theme in language and aphasia: history and current state....
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