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Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | Villamizar Espinosa, Estefania. | - |
dc.date.accessioned | 2022-05-26T01:39:05Z | - |
dc.date.available | 2017-01-11 | - |
dc.date.available | 2022-05-26T01:39:05Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Villamizar Espinosa, E. (2016). Aspectos teóricos acerca del análisis e interpretación de la imagen hemodinámica cerebral mediante técnicas no invasivas basadas en la teoría de la difusión [Trabajo de Grado Pregrado, Universidad de Pamplona]. Repositorio Hulago Universidad de Pamplona. http://repositoriodspace.unipamplona.edu.co/jspui/handle/20.500.12744/1141 | es_CO |
dc.identifier.uri | http://repositoriodspace.unipamplona.edu.co/jspui/handle/20.500.12744/1141 | - |
dc.description | En este trabajo revisamos analítica y conceptualmente el comportamiento de la luz al atravesar un medio dispersivo, en nuestro caso particular el cerebro, con la finalidad de determinar los niveles de hemoglobina en este órgano. Determinar estos niveles con precisión permite hacer un diagnóstico acertado y eficaz de traumas o problemas en el cerebro. De forma análoga a los materiales inertes, al analizar la luz que se dispersa de un tejido humano podemos obtener características de este medio. Las células sanguíneas actúan en el tejido como pequeños dispersores. Cuando la luz atraviesa este medio dispersivo ocurren dos fenómenos físicos, la dispersión y la absorción, proporcionándonos información acerca de la composición y el movimiento de la hemoglobina. Estudiamos estos fenómenos matemáticamente usando la ecuación de difusión cuyas soluciones son obtenidas a partir de las condiciones de frontera, aire-tejido, en un modelo ajustable a la realidad. También, revisamos teóricamente las técnicas para analizar la hemoglobina en el cerebro. Estas técnicas son: la espectroscopia cerca al infrarrojo (NIRS), y la espectroscopia de óptica difusa (DOS). Estas técnicas permiten que la luz incida más profundamente en el cerebro proporcionando información sobre el flujo de sangre cerebral (CBF). Estudiamos la aplicación de estas técnicas en personas con buena salud y personas con traumas cerebros vasculares. | es_CO |
dc.description.abstract | This work reviewed analytical and conceptually the behavior of light passing through a scattering medium, in our particular case the brain, in order to determine hemoglobin levels in this organ. Determine these levels with accuracy allows an accurate and effective diagnosis of trauma or brain problems. Analogously to inert materials, by analyzing the light that is scattered from a human tissue we can obtain characteristics of this medium. Blood cells act in tissue as small scatterers. When light passes through this dispersive medium occur two physical phenomena, scattering and absorption, providing us information about the composition and movement of hemoglobin. We study these phenomena mathematically using the diffusion equation whose solutions are obtained from the boundary conditions, air-tissue, in an adjustable model to reality. Also, we reviewed the techniques for analyzing hemoglobin in the brain. These techniques are: near-infrared spectroscopy (NIRS), and diffuse optical spectroscopy (DOS). These techniques allow light impinges deeper into the brain providing information about cerebral blood flow (CBF). We will study the application of these techniques in healthy people and people with vascular brain trauma. | es_CO |
dc.format.extent | 89 | es_CO |
dc.format.mimetype | application/pdf | es_CO |
dc.language.iso | es | es_CO |
dc.publisher | Universidad de Pamplona – Facultad de Ciencias Básicas. | es_CO |
dc.subject | La autora no proporciona la información sobre este ítem. | es_CO |
dc.title | Aspectos teóricos acerca del análisis e interpretación de la imagen hemodinámica cerebral mediante técnicas no invasivas basadas en la teoría de la difusión. | es_CO |
dc.type | http://purl.org/coar/resource_type/c_7a1f | es_CO |
dc.date.accepted | 2016-10-11 | - |
dc.relation.references | Ackerson, B. (1992). correlation transfer: Application of radiative transfer solution methods to photon correlation problems. Jornal of thermophysics. | es_CO |
dc.relation.references | Arfken, G. (Seccion 12.9). Mathematical methods for physicist. Orlando. Fa. | es_CO |
dc.relation.references | Austin, T. (2007). Optical imaging for the neonatal brain. | es_CO |
dc.relation.references | Boas, D. A. (2004). Diffuse optical imaging of brain activation: approaches to optimizing image sensitivily, resolution and accuracy. NeuroImage. | es_CO |
dc.relation.references | Bruckley, E. M. (2014). Diffuse corrlation spectroscopy for the masurement of cerebral blood flow: future prospects. | es_CO |
dc.relation.references | Cope, M. (1988). Systen for long term measurements of cerebral blood and tissue oxygenation on newborn infants. | es_CO |
dc.relation.references | Detre, J. A. (1999). perfusion magnetic resonance imaging with continous arterial spin labeling. | es_CO |
dc.relation.references | Dunn, A. K. (2001). Imaging of cerebral Blood Flow using Laser Speckle. journal of cerebral bood flow and metabolism. | es_CO |
dc.relation.references | Durduran, T. (2004). diffuse optical measurement of blood flow, blood oxygenation and metabolism in human brain during sensorimotor cortez activation. Optics Letters. | es_CO |
dc.relation.references | Durduran, T. (2004). non invasive measurements of tissue hemodynamics with hybrid diffuse optical methods. | es_CO |
dc.relation.references | Durduran, T. (2010). Diffuse optics for tissue monitoring and tomography. IOP Publishing. | es_CO |
dc.relation.references | Durduran, T. (2010). Diffuse optics for tissue monitoring and tomography. | es_CO |
dc.relation.references | Durduran, T. (2010). Difuse optics for tissue monitoring and tomography. 24. | es_CO |
dc.relation.references | Franckowiak, R. S. (1980). Quantitive measurement of regional Cerebral Blood Flow and Oxygen metabolism in man. | es_CO |
dc.relation.references | Huppert, T. (2006). A temporal comparison of BOLD, ASL and NIRS hemodynamics responses to motor stimuli in adult human. | es_CO |
dc.relation.references | Jackson, J. (1975). Classical Electrodynamics. | es_CO |
dc.relation.references | Kallen, B. v. (2002). Simultaneous measurementes of cerebral oxygentaion changes during brain activation by near infrared spectroscopy and fuctional macnetic resonance imaging in healthy young subjects. Proc. Intl Soc. Mag. Reason. Med. | es_CO |
dc.relation.references | Lemieux, P. (1999). Investigation non-Gaussian scattering processes by using nt order correlation functions. | es_CO |
dc.relation.references | Li, X. (1998). Fluorescence and diffusive wave diffraction tomographic probes un turbid media. | es_CO |
dc.relation.references | M. S. Paterson. (1989) time resolved reflectance and transmittance for the non/invasive measurement of tissue Optical Properties. | es_CO |
dc.relation.references | Martelli, F. (2010). light Propagation through Biological Tissue and other Diffusive Media. Bellingham, Washington: SPIE PRESS. | es_CO |
dc.relation.references | NIBIB, (. i. (2013). Computed Tomograohy CT. | es_CO |
dc.relation.references | Paulson, O. B. (1990). Cerebral Autoregulation. Cerebrovascular and brain metabolism reviews. | es_CO |
dc.relation.references | Perez, A. (2012). estudio de la reflexion difusa en el tejido biologico. | es_CO |
dc.relation.references | Perez, G. A. (2012). Estudio de la Reflexión difusa en el tejido biológico. ESCUELA SUPERIOR DE INGENIERÍA MECÁNICA Y ELÉCTRICA. | es_CO |
dc.relation.references | Pollock, J. M. (2009). Arterial Spin Labeleb MRI Perfusion Imaging: Clinical aplications. Magn Reson Imaging Clin. | es_CO |
dc.relation.references | Prakash, N. (2009). Current Trends in intraoperative optical imaging for functional brain mapping. Neuroimagine. | es_CO |
dc.relation.references | Purkayastha, S. (2012). Transcranial Doppler ultrasound: Technique and application. Semin Neurol. | es_CO |
dc.relation.references | Reivich, M. (1979). The fluorodeoxyglucose method for the measurement of local cerebral glucose. | es_CO |
dc.relation.references | Ripoll, J. (2001). Recovery of optical parameters in multiple-layered diffusive media theory and experiments. Journal of optical Society of America. | es_CO |
dc.relation.references | Rivera, D. M. (2011). Resonancia Magnetica Cerebral. | es_CO |
dc.relation.references | Smith, M. (2008). Monitoring Intracranial Pressure in Traumatic Brain Injury. Anesht Analg. | es_CO |
dc.relation.references | S. Fantini, (1997) Effective source term in the diffusion equation for photon transport and turbid media | es_CO |
dc.relation.references | Soto, K. (2014). ESTUDIO TEÓRICO DE LA ECUACIÓN DE DIFUSIÓN EN EL DOMINIO DE LAS FRECUENCIAS APLICADA EN EL MODELAMIENTO DE TEJIDO HUMANO. | es_CO |
dc.relation.references | Wolf, F. M. (2007). progress in rear infrared spectroscopy and topograpgy for the brain. | es_CO |
dc.relation.references | Yang, Y. (1997). low cost frecuency-domain photon migration instrumentbfor tissue spectroscopy. | es_CO |
dc.relation.references | Ye, F. Q. (1997). Quantitation of regional Cerebral Blood Floww increases during motor activation: a steady-state arterial spin tagging study. Neuroimage. | es_CO |
dc.relation.references | Yonas, H. (1984). Clinical Experience with the use of Xenon-Enhanced CT blood flow mapping | es_CO |
dc.rights.accessrights | http://purl.org/coar/access_right/c_abf2 | es_CO |
dc.type.coarversion | http://purl.org/coar/resource_type/c_2df8fbb1 | es_CO |
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