Search Results - "Ortega, H. V."

Algebraic solution and coherent states for the Dirac oscillator interacting with a topological defect by Salazar-Ramírez, M., Ojeda-Guillén, D., Morales-González, A., García-Ortega, V. H.

“… In this work we study and exactly solve the Dirac oscillator interacting with three different topological defects, namely the cosmic string spacetime ( Λ ∓…”
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Effects of Glyphosate on the Environment and Human Health by García-Villanueva, L. A., Cuapio-Ortega, V. H., Henández-Paniagua, I. Y., Fernández-Villagómez, G., Rodrigo-Ilarri, J., Rodrigo-Clavero, M. E., Andraca-Ayala, G. L., Hernández-Cruz, G. B., Banda-Santamaría, S.

“…Glyphosate is a herbicide of a wide spectrum that alters the production of amino acids in plants, leading to their death. Due to its properties, it is used to…”
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Anti-inflammatory activity of Mitraphylline isolated from Uncaria tomentosa bark by Rojas-Duran, R., González-Aspajo, G., Ruiz-Martel, C., Bourdy, G., Doroteo-Ortega, V.H., Alban-Castillo, J., Robert, G., Auberger, P., Deharo, E.

“…Uncaria tomentosa (Willd. ex Roem. & Schult.) DC. (Rubiaceae) is widely used by populations living in South America to treat many ailments associated with…”
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Intracranial aneurysms : flow analysis of their origin and progression by GONZALEZ, C. F, CHO, Y. I, ORTEGA, H. V, MORET, J

“…To explain the origin and growth of intracranial aneurysms using the hemodynamic data obtained from a computer simulation. Pulsatile flow in an intracranial…”
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Arterial Pseudostenosis on First-Pass Gadolinium-Enhanced Three-Dimensional MR Angiography: New Observation of a Potential Pitfall by Chiowanich, Peerapod, Mitchell, Donald G, Ortega, Hector V, Mohamed, Feroze

“…The purpose of this study was to determine the frequency of apparent stenosis of normal aortic branches in patients on first-pass gadolinium-enhanced…”
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Computer simulation helps predict cerebral aneurysms by ORTEGA, H. V

“…Researchers have recently proven the ability of computer simulation to predict the behaviour of cerebral aneurysms. Accurately simulating the flow of blood…”
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Carotid artery bifurcation: multiple-flip-angle, three-dimensional, time-of-flight MR angiographic technique by Faro, S H, Mohamed, F B, Chen, C Y, Ortega, H V, Vinitski, S

“…Multiple-flip-angle, three-dimensional, time-of-flight magnetic resonance (MR) angiography was performed in vitro and in vivo in the carotid artery…”
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A simple method to improve image nonuniformity of brain MR images at the edges of a head coil by MOHAMED, F. B, VINITSKI, S, FARO, S. H, ORTEGA, H. V, ENOCHS, S

“…One of the major sources of image nonuniformity in the high field MR scanners is the radiofrequency (RF) coil inhomogeneity. It degrades conspicuity of…”
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Low-artifact intravascular devices: MR imaging evaluation by Teitelbaum, G P, Ortega, H V, Vinitski, S, Stern, H, Tsuruda, J S, Mitchell, D G, Rifkin, M D, Bradley, Jr, W G

“…Flow-phantom magnetic resonance (MR) imaging, with use of both spin-echo (SE) and gradient-echo (GRE) techniques at 1.5 T, was performed on the percutaneous…”
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Carotid magnetic resonance angiography : improved image quality with dual 3-inch surface coils by FARO, S. H, VINITSKI, S, ORTEGA, H. V, MOHAMED, F. B, CHEN, C. Y, FLANDERS, A. E, GONZALES, C. F, ZIMMERMAN, R. A

“…Magnetic resonance angiography (MRA) hs inherent artifacts due to variation in velocity and direction of flowing blood in the carotid bulb and regions of…”
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Theory of ultrasound Doppler-spectra velocimetry for arbitrary beam and flow configurations by Censor, D., Newhouse, V.L., Vontz, T., Ortega, H.V.

“…In conventional ultrasound Doppler systems, the velocity component along the beam axis is derived from the observed frequency shift. Recently, it was verified…”
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Algebraic solution and coherent states for the Dirac oscillator interacting with a topological defect by Salazar-Ramírez, M, Ojeda-Guillén, D, Morales-González, A, García-Ortega, V. H

“…Eur. Phys. J. Plus (2019) 134: 8 In this work we study and exactly solve the Dirac oscillator with three different topological defects, namely the cosmic…”
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Technical Report Computer simulation helps predict cerebral aneurysms by Ortega, H. V.

“…Researchers have recently proven the ability of computer simulation to predict the behaviour of cerebral aneurysms. Accurately simulating the flow of blood…”
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Use of Ferrum in MRI of lung parenchyma and pulmonary embolism by Vinitski, S, Thakur, M L, Consigny, P M, Mitchell, D G, Mohamed, F B, Ortega, H V

“…MRI of lung parenchyma and pulmonary embolism (PE) remains challenging. "Ferrum," a ferric hydroxide sucrose complex used clinically for iron deficiency anemia…”
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Optimization of gradient-echo imaging parameters for intracaval filters and trapped thromboemboli by Teitelbaum, G P, Ortega, H V, Vinitski, S, Clark, R A, Watanabe, A T, Matsumoto, A H, Rifkin, M D, Barth, K H

“…Flow-phantom magnetic resonance (MR) gradient-echo (GRE) imaging at 1.5 T was performed on a titanium Greenfield filter containing trapped blood clots with a…”
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Pulsation artifact in short TR MR imaging and angiography: exacerbation with signal averaging by Mitchell, D G, Tasciyan, T, Ortega, H V, Outwater, E, Vinitski, S

“…Averaging the signals from more than one excitation per phase-encoding view increases the signal-to-noise ratio and, in conventional spin-echo magnetic…”
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Predicting cerebral aneurysms with CFD by Ortega, Hector V

“…Computational-fluid-dynamics (CFD) techniques applied in detecting cerebral aneursyms aid doctors in prescribing the best treatment method. CFD is a simulation…”
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Doppler simulation for pulsatile flow having nonaxial components by Forsberg, F., Oung, H., Ortega, H.V.

“…Describes a numerical model that can produce Doppler signals for nonaxial, pulsatile flow. The model consists of two main units. The first unit models the…”
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Fast magnetization transfer MR imaging by Vinitski, S., Mohamed, F.B., Faro, S., Gonzalez, C., Ortega, H.V., Mitchell, D.G., Outwater, E.K.

“…We have implemented a new magnetization transfer (MT) technique, to decrease total imaging time and thus improve efficiency of MT based MRI. By judiciously…”
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