Análisis del efecto de la porosidad y forma de un stent en un aneurisma sacular intracraneal utilizando el método Lattice Boltzmann
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Keywords
Aneurisma sacular intracraneal, stent, método Lattice Boltzmann.
Resumen
En este artículo se presenta un analísis de los patrones de flujo sanguíneo en un aneurisma sacular intracraneal y los efectos de la forma y la porosidad de los stents empleados en tratamientos endovasculares. En este estudio se empleará el criterio de reducción del flujo para caracterizar la eficiencia del stent. Se evaluarán las propiedades hemodinámicas de un flujo sanguíneo newtoniano dentro del aneurisma a partir del método de Lattice Boltzmann (LBM). Se proponen algunos valores de porosidad y forma de stent para el análisis. En todos los casos de stent analizados se observa una reducción de velocidades y presiones y un aumento de viscosidad. Se observa además que el stent de contorno rectangular es el caso óptimo y reduce la magnitud de la velocidad del flujo en el interior del aneurisma hasta en un 76 %. Los resultados obtenidos ayudan a entender el papel de la forma y porosidad en el diseño de un stent.
PACS: 87.15.hj; 47.15.G-; 47.11.-j
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Referencias
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[26] S. Akpek, A. Arat, H. Morsi, R. P. Klucznick, C. M. Strother, and M. E. Mawad, “Self expandable stent assisted coiling of wide necked intracranial aneurysms: A single center experience,” AJNR Am J Neuroradiol, vol. 26, no. 5, pp. 1223–1231, 2005.
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[31] T. Liou and S. Liou, “Pulsatile flows in a lateral aneurysm anchored on a stented and curved parent vessel,” Experimental Mechanics, vol. 44, no. 3, pp. 253–260, 2004-06-01.
[2] G. Geremia, M. Haklin, and L. Brennecke, “Embolization of experimentally created aneurysms with intravascular stent devices,” AJNR Am J Neuroradiol, vol. 15, no. 7, pp. 1223–1231, 1994.
[3] B. Lieber, A. Stancampiano, and A. Wakhloo, “Alteration of hemodynamics in aneurysm models by stenting: Influence of stent porosity,” Annals of Biomedical Engineering, vol. 25, pp. 460–469, 1997, 10.1007/BF02684187.
[4] F. Turjman, T. Massoud, C. Ji, G. Guglielmi, F. Vinuela, and J. Robert, “Combined stent implantation and endosaccular coil placement for treatment of experimental wide-necked aneurysms: a feasibility study in swine,” AJNR Am J Neuroradiol, vol. 15, no. 6, pp. 1087–1090, 1994.
[5] A. Wakhloo, F. Schellhammer, J. de Vries, J. Haberstroh, and M. Schumacher, “Self-expanding and balloon-expandable stents in the treatment of carotid aneurysms: an experimental study in a canine model,” AJNR Am J Neuroradiol, vol. 15, no. 3, pp. 493–502, 1994.
[6] A. Wakhloo, F. Tio, B. Lieber, F. Schellhammer, M. Graf, and L. Hopkins, “Self-expanding nitinol stents in canine vertebral arteries: hemodynamics and tissue response,” AJNR Am J Neuroradiol, vol. 16, no. 5, pp. 1043–1051, 1995.
[7] H. Steiger, Pathophysiology of development and rupture of cerebral aneurysms, ser. Acta neurochirurgica: Supplementum. Springer-Verlag, 1990.
[8] A. C. Burleson, C. M. Strother, and V. T. Turitto, “Computer modeling of intracranial saccular and lateral aneurysms for the study of their hemodynamics,” Neurosurgery, vol. 37, no. 4, pp.–, 1995.
[9] G. N. Foutrakis, H. Yonas, and R. J. Sclabassi, “Saccular aneurysm formation in curved and bifurcating arteries,” AJNR Am J Neuroradiol, vol. 20, no. 7, pp. 1309–1317, 1999.
[10] C. Gonzalez, Y. Cho, H. Ortega, and J. Moret, “Intracranial aneurysms: flow analysis of their origin and progression,” AJNR Am J Neuroradiol, vol. 13, no. 1, pp. 181–188, 1992.
[11] M. Aenis, A. P. Stancampiano, A. K.Wakhloo, and B. B. Lieber, “Modeling of flow in a straight stented and nonstented side wall aneurysm model,” Journal of Biomechanical Engineering, vol. 119, no. 2, pp. 206–212, 1997.
[12] J. Cebral and R. Lohner, “Efficient simulation of blood flow past complex endovascular devices using an adaptive embedding technique,” Medical Imaging, IEEE Transactions on, vol. 24, no. 4, pp. 468 –476, april 2005.
[13] G. R. Stuhne and D. A. Steinman, “Finite-element modeling of the hemodynamics of stented aneurysms,” Journal of Biomechanical Engineering, vol. 126, no. 3, pp. 382 387, 2004.
[14] Y. Kim, X. Xu, and J. Lee, “The effect of stent porosity and strut shape on saccular aneurysm and its numerical analysis with lattice boltzmann method,” Annals of Biomedical Engineering, vol. 38, no. 7, pp. 2274–2292, 2010.
[15] A. Sutton, Cardiovascular Disorders Sourcebook, ser. Health Reference Series. Omnigraphics Inc, 2010.
[16] M. e. a. Forsting, Intracranial Vascular Malformations and Aneurysms: From Diagnostic Work-up to Endovascular Therapy, ser. Medical Radiology. Springer, 2010.
[17] S. Juvela, K. Poussa, and M. Porras, “Factors affecting formation and growth of intracranial aneurysms : A long-term follow-up study,” Stroke, vol. 32, no. 2, pp. 485–491, 2001.
[18] W. E. Stehbens, “Etiology of intracranial berry aneurysms,” Journal of Neurosurgery, vol. 70, no. 6, pp. 823–831, Jun. 1989.
[19] V. A. H. Yong-Zhong G, “Pathogenesis and histo-pathology of saccular aneurysms: review of the literature,” Neurol Res, vol. 12, pp. 249–255, 1990.
[20] T. M. Chyatte D, Reilly J, “Morphometric analysis of reticular and elastin fibers in the cerebral arteries of patients with intracranial aneurysms,” Neurosurgery, vol. 26, pp. 939–943, 1990.
[21] G. Bradac, Cerebral Angiography: Normal Anatomy and Vascular Pathology. Springer, 2011.
[22] A. I. Qureshi, V. Janardhan, R. A. Hanel, and G. Lanzino, “Comparison of endovascular and surgical treatments for intracranial aneurysms: an evidencebased review,” Lancet Neurol., vol. 6, no. 9, pp. 816–825, Sep. 2007.
[23] A. J. Molyneux, R. S. Kerr, L.-M. Yu, M. Clarke, M. Sneade, J. A. Yarnold, and P. Sandercock, “International subarachnoid aneurysm trial (isat) of neurosurgical clipping versus endovascular coiling in 2143 patients with ruptured intracranial aneurysms: a randomised comparison of effects on survival, dependency, seizures, rebleeding, subgroups, and aneurysm occlusion,” Lancet, vol. 366, no. 9488, pp. 809–817, Sep. 2005.
[24] J. V. Byrne, M. Bashiri, A. Pasco, and J. H. Morris, “A novel flexible endovascular stent for use in small and tortuous vessels,” Neuroradiology, vol. 42, pp. 56–61, 2000, 10.1007/s002340050015.
[25] G. Lanzino, A. K. Wakhloo, R. D. Fessler, M. L. Hartney, L. R. Guterman, and L. N. Hopkins, “Efficacy and current limitations of intravascular stents for intracranial internal carotid, vertebral, and basilar artery aneurysms,” Journal of Neurosurgery, vol. 91, no. 4, pp. 538–546, Oct. 1999.
[26] S. Akpek, A. Arat, H. Morsi, R. P. Klucznick, C. M. Strother, and M. E. Mawad, “Self expandable stent assisted coiling of wide necked intracranial aneurysms: A single center experience,” AJNR Am J Neuroradiol, vol. 26, no. 5, pp. 1223–1231, 2005.
[27] S. Succi, The lattice Boltzmann equation for fluid dynamics and beyond, ser. Numerical mathematics and scientific computation. Clarendon Press, 2001.
[28] D. B. Chirila, introduction to lattice boltzmann method, 2010.
[29] S. Chapman and T. Cowling, The mathematical theory of non-uniform gases: an account of the kinetic theory of viscosity, thermal conduction, and diffusion in gases, ser. Cambridge Mathematical Library. Cambridge University Press, 1991.
[30] W. Milnor, Hemodynamics. Williams & Wilkins, 1982.
[31] T. Liou and S. Liou, “Pulsatile flows in a lateral aneurysm anchored on a stented and curved parent vessel,” Experimental Mechanics, vol. 44, no. 3, pp. 253–260, 2004-06-01.
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Publicado
nov 5, 2013
Article Details
Cómo citar
Ayala, D. S., & Madero, D. A. (2013). Análisis del efecto de la porosidad y forma de un stent en un aneurisma sacular intracraneal utilizando el método Lattice Boltzmann. Ingeniería Y Ciencia, 9(18), 33–59. https://doi.org/10.17230/ingciecia.9.18.2
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Agencias de apoyo
Universidad Nacional de Colombia, Instituto Nacional de Cancerología
Biografía del autor/a
D S Ayala, Oncólogos del Occidente S.A
Mg. en Física médicaD A Madero, Oncólogos del Occidente S.A
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