Search Results - "WEISSKOFF, Robert"

Mapping complex tissue architecture with diffusion spectrum magnetic resonance imaging by Wedeen, Van J., Hagmann, Patric, Tseng, Wen-Yih Isaac, Reese, Timothy G., Weisskoff, Robert M.

“…Methods are presented to map complex fiber architectures in tissues by imaging the 3D spectra of tissue water diffusion with MR. First, theoretical…”
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The characterization of dynamic susceptibility effects by Weisskoff, Robert M.

“…Understanding and quantifying dynamic susceptibility contrast, which arises from compartmentalized magnetic field perturbers (e.g., deoxyhemoglobin, contrast…”
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Tracer arrival timing-insensitive technique for estimating flow in MR perfusion-weighted imaging using singular value decomposition with a block-circulant deconvolution matrix by Wu, Ona, Østergaard, Leif, Weisskoff, Robert M., Benner, Thomas, Rosen, Bruce R., Sorensen, A. Gregory

“…Relative cerebral blood flow (CBF) and tissue mean transit time (MTT) estimates from bolus‐tracking MR perfusion‐weighted imaging (PWI) have been shown to be…”
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In vivo molecular imaging of acute and subacute thrombosis using a fibrin-binding magnetic resonance imaging contrast agent by BOTNAR, René M, PEREZ, Alexandra S, BARRETT, John A, GRAHAM, Philip B, WEISSKOFF, Robert M, MANNING, Warren J, JOHNSTONE, Michael T, WITTE, Sonia, WIETHOFF, Andrea J, LAREDO, James, HAMILTON, James, QUIST, William, PARSONS, Edward C, VAIDYA, Anand, KOLODZIEJ, Andrew

“…Plaque rupture with subsequent thrombosis is recognized as the underlying pathophysiology of most acute coronary syndromes and stroke. Thus, direct thrombus…”
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Calibrated Functional MRI: Mapping the Dynamics of Oxidative Metabolism by Davis, Timothy L., Kwong, Kenneth K., Weisskoff, Robert M., Rosen, Bruce R.

“…MRI was extended to the measurement of changes in oxidative metabolism in the normal human during functionally induced changes in cellular activity. A…”
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In vivo magnetic resonance imaging of coronary thrombosis using a fibrin-binding molecular magnetic resonance contrast agent by Botnar, René M, Buecker, Arno, Wiethoff, Andrea J, Parsons, Jr, Edward C, Katoh, Marcus, Katsimaglis, George, Weisskoff, Robert M, Lauffer, Randall B, Graham, Philip B, Gunther, Rolf W, Manning, Warren J, Spuentrup, Elmar

“…The advent of fibrin-binding molecular magnetic resonance (MR) contrast agents and advances in coronary MRI techniques offers the potential for direct imaging…”
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MR angiography of aortoiliac occlusive disease: a phase III study of the safety and effectiveness of the blood-pool contrast agent MS-325 by Goyen, Mathias, Edelman, Mark, Perreault, Pierre, O'Riordan, Elaine, Bertoni, Hernan, Taylor, James, Siragusa, Daniel, Sharafuddin, Melhem, Mohler, 3rd, Emile R, Breger, Robert, Yucel, E Kent, Shamsi, Kohkan, Weisskoff, Robert M

“…To evaluate prospectively the safety and effectiveness of aortoiliac magnetic resonance (MR) angiography enhanced with MS-325 (gadofosveset trisodium) at a…”
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Acute Effects of Cocaine on Human Brain Activity and Emotion by Breiter, Hans C, Gollub, Randy L, Weisskoff, Robert M, Kennedy, David N, Makris, Nikos, Berke, Joshua D, Goodman, Julie M, Kantor, Howard L, Gastfriend, David R, Riorden, Jonn P, Mathew, R.Thomas, Rosen, Bruce R, Hyman, Steven E

“…We investigated brain circuitry mediating cocaine- induced euphoria and craving using functional MRI (fMRI). During double-blind cocaine (0.6 mg/kg) and saline…”
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Predicting tissue outcome in acute human cerebral ischemia using combined diffusion- and perfusion-weighted MR imaging by WU, Ona, KOROSHETZ, Walter J, SORENSEN, A. Gregory, ØSTERGAARD, Leif, BUONANNO, Ferdinando S, COPEN, William A, GONZALEZ, R. Gilberto, RORDORF, Guy, ROSEN, Bruce R, SCHWAMM, Lee H, WEISSKOFF, Robert M

“…Tissue signatures from acute MR imaging of the brain may be able to categorize physiological status and thereby assist clinical decision making. We designed…”
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Molecular magnetic resonance imaging of coronary thrombosis and pulmonary emboli with a novel fibrin-targeted contrast agent by SPUENTRUP, Elmar, BUECKER, Arno, KATOH, Marcus, WIETHOFF, Andrea J, PARSONS, Edward C, BOTNAR, Rene M, WEISSKOFF, Robert M, GRAHAM, Philip B, MANNING, Warren J, GÜNTHER, Rolf W

“…The differential diagnosis of acute chest pain is challenging, especially in patients with normal ECG findings, and may include coronary thrombosis or…”
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Motor cortex activation is related to force of squeezing by Cramer, Steven C., Weisskoff, Robert M., Schaechter, Judith D., Nelles, Gereon, Foley, Mary, Finklestein, Seth P., Rosen, Bruce R.

“…Primate studies have demonstrated that motor cortex neurons show increased activity with increased force of movement. In humans, this relationship has received…”
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Effects of tracer arrival time on flow estimates in MR perfusion-weighted imaging by Wu, Ona, Østergaard, Leif, Koroshetz, Walter J., Schwamm, Lee H., O'Donnell, Joanie, Schaefer, Pamela W., Rosen, Bruce R., Weisskoff, Robert M., Sorensen, A. Gregory

“…A common technique for calculating cerebral blood flow (CBF) and mean transit time (MTT) is to track a bolus of contrast agent using perfusion‐weighted MRI…”
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Comparison of Diameter and Perimeter Methods for Tumor Volume Calculation by SORENSEN, A. Gregory, PATEL, Shveta, HARRIS, Gordon J, LEV, Michael, SCHAEFER, Pamela W, BUCHBINDER, Bradley R, BAREST, Glenn, YAMADA, Kei, PONZO, John, KWON, H. Young, GEMMETE, Joseph, FARKAS, Jeff, HARMATH, Carla, TIEVSKY, Andrew L, ZIEGLER, Richard B, SALHUS, Megan R. C, WEISSKOFF, Robert, BRIDGES, Sarah, SYNNOTT, Jennifer, SIEVERS, Amy, YOON, Young-Ho, LEE, E. John, YANG, Michael C, LEWIS, Robert F

“…Lesion volume is often used as an end point in clinical trials of oncology therapy. We sought to compare the common method of using orthogonal diameters to…”
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Cocaine Activation Discriminates Dopaminergic Projections by Temporal Response: An fMRI Study in Rat by Marota, John J.A., Mandeville, Joseph B., Weisskoff, Robert M., Moskowitz, Michael A., Rosen, Bruce R., Kosofsky, Barry E.

“…We applied a sensitive new functional magnetic resonance imaging technique to identify the pattern and determinants of cocaine-induced brain activation in…”
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Estimating kinetic parameters from dynamic contrast-enhanced t1-weighted MRI of a diffusable tracer: Standardized quantities and symbols by Tofts, Paul S., Brix, Gunnar, Buckley, David L., Evelhoch, Jeffrey L., Henderson, Elizabeth, Knopp, Michael V., Larsson, Henrik B.W., Lee, Ting-Yim, Mayr, Nina A., Parker, Geoffrey J.M., Port, Ruediger E., Taylor, June, Weisskoff, Robert M.

“…We describe a standard set of quantity names and symbols related to the estimation of kinetic parameters from dynamic contrast‐enhanced T1‐weighted magnetic…”
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Magnetic resonance perfusion-weighted imaging of acute cerebral infarction: Effect of the calculation methods and underlying vasculopathy by YAMADA, Kei, WU, Ona, SORENSEN, A. Gregory, GONZALEZ, R. Gilberto, BAKKER, Dirk, ØSTERGAARD, Leif, COPEN, William A, WEISSKOFF, Robert M, ROSEN, Bruce R, YAGI, Katsumi, NISHIMURA, Tsunehiko

“…Various calculation methods are available to estimate the transit-time on MR perfusion-weighted imaging (PWI). Each method may affect the results of PWI…”
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Aortoiliac occlusive disease in patients with known or suspected peripheral vascular disease: safety and efficacy of gadofosveset-enhanced MR angiography--multicenter comparative phase III study by Rapp, Joseph H, Wolff, Steven D, Quinn, Stephen F, Soto, Jorge A, Meranze, Steven G, Muluk, Satish, Blebea, John, Johnson, Stephen P, Rofsky, Neil M, Duerinckx, Andre, Foster, Gregory S, Kent, K Craig, Moneta, Gregory, Middlebrook, Michael R, Narra, Vamsidhar R, Toombs, Barry D, Pollak, Jeffrey, Yucel, E Kent, Shamsi, Kohkan, Weisskoff, Robert M

“…To prospectively determine the safety and efficacy of the gadolinium-based blood pool magnetic resonance (MR) imaging contrast agent gadofosveset in patients…”
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Microscopic susceptibility variation and transverse relaxation: theory and experiment by Weisskoff, R M, Zuo, C S, Boxerman, J L, Rosen, B R

“…Microscopic susceptibility variations invariably increase apparent transverse relaxation rates. In this paper, we present comparisons between Monte Carlo…”
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Cardiac susceptibility artifacts arising from the heart-lung interface by Atalay, Michael K., Poncelet, Brigitte P., Kantor, Howard L., Brady, Thomas J., Weisskoff, Robert M.

“…Cardiac MRI studies often show susceptibility artifacts along the inferoapical myocardial margin in both human and in vivo animal experiments at field…”
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Locally Regularized Spatiotemporal Modeling and Model Comparison for Functional MRI by Purdon, Patrick L., Solo, Victor, Weisskoff, Robert M., Brown, Emery N.

“…In this work we treat fMRI data analysis as a spatiotemporal system identification problem and address issues of model formulation, estimation, and model…”
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