Search Results - "Shandas, R"

Characterization of 3-Dimensional Printing and Casting Materials for use in Magnetic Resonance Imaging Phantoms at 3 T by Yunker, B E, Stupic, K F, Wagner, J L, Huddle, S, Shandas, R, Weir, R F, Russek, S E, Keenan, K E

“…Imaging phantoms are used to calibrate and validate the performance of magnetic resonance imaging (MRI) systems. Many new materials have been developed for…”
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Development and validation of echo PIV by KIM, H. B, HERTZBERG, J. R, SHANDAS, R

“…The combination of ultrasound echo images with digital particle image velocimetry (DPIV) methods has resulted in a two-dimensional, two-component velocity…”
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Characterization of 3-Dimensional Printing and Casting Materials for use in Computed Tomography and X-ray Imaging Phantoms by Yunker, B E, Holmgren, A, Stupic, K F, Wagner, J L, Huddle, S, Shandas, R, Weir, R F, Keenan, K E, Garboczi, E, Russek, S E

“…Imaging phantoms are used to calibrate and validate the performance of medical computed tomography (CT) systems. Many new materials developed for…”
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Cytotoxicity and thermomechanical behavior of biomedical shape-memory polymer networks post-sterilization by Yakacki, C M, Lyons, M B, Rech, B, Gall, K, Shandas, R

“…Shape-memory polymers (SMPs) are being increasingly proposed for use in biomedical devices. This paper investigates the cytotoxicity, surface characteristics…”
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Abstract No. 262: Novel functionalized shape-memory polymer embolic coils provide rapid embolization and clinically viable radiographic visibility with minimal MR artifact: pre-clinical studies in ovine and canine models by Shandas, R, Castleberry, J, Dyamenahalli, K, Goodrich, S, Parmenter, M, Trommeter, J

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Long-term evaluation of the medusatm vascular plug for vascular embolization: pre-clinical evaluation by Johnson, S, Griffin, D, Smouse, B, Haskal, Z, Almeida, J.I, Javier, J, Mackay, E, Mustapha, J, Castleberry, J, Goodrich, S, Parmenter, M, Trommeter, J, Shandas, R

“…Purpose Platinum embolization coils produce significant CT artifacts and require multiple devices to occlude vessels. A polymer coil-plug represents an…”
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Abstract No. 59: Radio-opaque, MRI-compatible, shape-memory polymer embolic coils: In vitro and in vivo evaluation by Dyamenahalli, K, Castleberry, J, Trommeter, J, Goodrich, S, Lanning, C, Shandas, R

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Predicting backscatter characteristics from micron- and submicron-scale ultrasound contrast agents using a size-integration technique by Hairong Zheng, Barker, A., Shandas, R.

“…In this paper, a computationally, inexpensive, size-integration method based on a modified Rayleigh-Plesset model is developed to predict backscatter spectra…”
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Development and validation of implantable sensors for monitoring function of prosthetic heart valves: in vitro studies by LANNING, C, SHANDAS, R

“…The development of a 'smart' heart valve prosthesis, with the intrinsic ability to monitor thrombus formation, mechanical failure and local haemodynamics and…”
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Stiffening of the Extrapulmonary Arteries From Rats in Chronic Hypoxic Pulmonary Hypertension by Drexler, E S, Bischoff, J E, Slifka, A J, McCowan, C N, Quinn, T P, Shandas, R, Ivy, D D, Stenmark, K R

“…Changes in the compliance properties of large blood vessels are critical determinants of ventricular afterload and ultimately dysfunction. Little is known of…”
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Comparison of mechanical behavior among the extrapulmonary arteries from rats by Drexler, E.S, Quinn, T.P, Slifka, A.J, McCowan, C.N, Bischoff, J.E, Wright, J.E, Ivy, D.D, Shandas, R

“…Abstract Results of comparative tests on pulmonary arteries from untreated Long–Evans rats are presented from three sections of the artery: the trunk, and the…”
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Bubble-test method for synthetic and bovine vascular material by Slifka, A.J., Drexler, E.S., Wright, J.E., Shandas, R.

“…A measurement system has been designed and constructed at NIST for the study of the mechanical properties of synthetic and bovine vascular materials. The…”
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Utility of three-dimensional ultrasound Doppler flow reconstruction of the proximal jet to quantify effective orifice area: in vitro steady and pulsatile flow studies by Shandas, R, DeGroff, C G, Kwon, J, Trujillo, N, Gill, E A, Valdes-Cruz, L

“…We examined the utility of three-dimensional (3D) reconstruction of two-dimensional color Doppler images of the proximal jet to quantify the effective area of…”
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Unconstrained recovery characterization of shape-memory polymer networks for cardiovascular applications by Yakacki, Christopher Michael, Shandas, Robin, Lanning, Craig, Rech, Bryan, Eckstein, Alex, Gall, Ken

“…Abstract Shape-memory materials have been proposed in biomedical device design due to their ability to facilitate minimally invasive surgery and recover to a…”
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Accuracy of the Bernoulli equation for estimation of pressure gradient across stenotic Blalock-Taussig shunts: an in vitro and numerical study by DeGroff, C G, Shandas, R, Kwon, J, Valdes-Cruz, L

“…Accurate assessment of the pressure gradient (PG) across a modified Blalock-Taussig (mBT) shunt is important in planning for staging to a cavopulmonary…”
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519 OSCILLATORY EVENTS WITH STEADY FLOW BOUNDARY CONDITIONS IN NUMERICAL SIMULATIONS OF THE FONTAN OPERATION by Birnbaum, B., Orlando, W., Shandas, R., Hertzberg, J., Degroff, C.

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Injectable carbon nanotube-functionalized hydrogel as a tool for cardiac tissue engineering by Pena, B, Knight, W, Cavasin, M, Ferrari, I, Abdel-Hafiz, M, Vagnozzi, R, Bosi, S, Park, D, Shandas, R, Song, K, McKinsey, T, Sbaizero, O, Taylor, M, Prato, M, Mestroni, L

“…Abstract Background/Introduction Heart failure (HF) is an expensive major public health problem in the United States and around the world (1). The current…”
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Insights into catheter/doppler discrepancies in congenital aortic stenosis by Lemler, Matthew S., Valdes-Cruz, Lilliam M., Shandas, Robin S., Cape, Edward G.

“…Despite inherent discrepancies between Doppler and catheter gradients in aortic stenosis, the simplified Bernoulli equation is still the accepted noninvasive…”
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Echo PIV for flow field measurements in vivo by Kim, H B, Hertzberg, J R, Shandas, R

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An Experimental Method for Measuring Mechanical Properties of Rat Pulmonary Arteries Verified With Latex by Drexler, E S, Slifka, A J, Wright, J E, McCowan, C N, Finch, D S, Quinn, T P, McColskey, J D, Ivy, D D, Shandas, R

“…This paper describes a test method for measuring the mechanical properties of small, nonlinear membrane samples from a rat model for pulmonary hypertension…”
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