Search Results - "Pelc, N.J."

Flow effects in balanced steady state free precession imaging by Markl, M., Alley, M.T., Elkins, C.J., Pelc, N.J.

“…An analysis of the effect of flow on 2D fully balanced steady state free precession (SSFP) imaging is presented. Transient and steady‐state SSFP signal…”
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Analysis and generalized correction of the effect of spatial gradient field distortions in diffusion-weighted imaging by Bammer, R., Markl, M., Barnett, A., Acar, B., Alley, M.T., Pelc, N.J., Glover, G.H., Moseley, M.E.

“…Nonuniformities of magnetic field gradients can cause serious artifacts in diffusion imaging. While it is well known that nonlinearities of the imaging…”
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Visualization of Hemodynamics in a Silicon Aneurysm Model Using Time-Resolved, 3D, Phase-Contrast MRI by Isoda, H, Hirano, M, Takeda, H, Kosugi, T, Alley, M.T, Markl, M, Pelc, N.J, Sakahara, H

“…We performed time-resolved 3D phase-contrast MR imaging by using a 1.5T MR scanner to visualize hemodynamics in a silicon vascular model with a middle cerebral…”
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Design, Performance, and Applications of a Hybrid X-Ray/MR System for Interventional Guidance by Fahrig, Rebecca, Pauly, Kim Butts, Sze, Daniel Y., Frisoli, Joan K., Daniel, Bruce L., Pelc, Norbert J., Ganguly, Arundhuti, Lillaney, Prasheel, Bracken, John, Rowlands, John A., Wen, Zhifei, Yu, Huanzhou, Rieke, Viola, Santos, Juan M.

“…Image-guided minimally invasive procedures have made a substantial impact in improving patient management, reducing the cost, morbidity, and mortality of…”
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Fast algorithms for GS-model-based image reconstruction in data-sharing Fourier imaging by Zhi-Pei Liang, Madore, B., Glover, G.H., Pelc, N.J.

“…Many imaging experiments involve acquiring a time series of images. To improve imaging speed, several "data-sharing" methods have been proposed, which collect…”
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Phase unwrapping of MR phase images using Poisson equation by Moon-Ho Song, S., Napel, S., Pelc, N.J., Glover, G.H.

“…The authors have developed a technique based on a solution of the Poisson equation to unwrap the phase in magnetic resonance (MR) phase images. The method is…”
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MO‐D‐201C‐01: Advances in MR: State of the Art Today and Future Directions — MR Instrumentation by Pelc, N.J.

“…Even though Magnetic Resonance as a modality is now several decades old, instrumentation continues to advance at a vigorous pace. The purpose of this…”
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Generalized reconstruction of phase contrast MRI: Analysis and correction of the effect of gradient field distortions by Markl, M., Bammer, R., Alley, M.T., Elkins, C.J., Draney, M.T., Barnett, A., Moseley, M.E., Glover, G.H., Pelc, N.J.

“…To characterize gradient field nonuniformity and its effect on velocity encoding in phase contrast (PC) MRI, a generalized model that describes this phenomenon…”
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Balanced phase-contrast steady-state free precession (PC-SSFP): A novel technique for velocity encoding by gradient inversion by Markl, M., Alley, M.T., Pelc, N.J.

“…A technique for measuring velocity is presented that combines cine phase contrast (PC) MRI and balanced steady‐state free precession (SSFP) imaging, and is…”
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Performance of a static-anode/flat-panel x-ray fluoroscopy system in a diagnostic strength magnetic field: A truly hybrid x-ray/MR imaging system by Fahrig, R., Wen, Z., Ganguly, A., DeCrescenzo, G., Rowlands, J. A., Stevens, G. M., Saunders, R. F., Pelc, N. J.

“…Minimally invasive procedures are increasing in variety and frequency, facilitated by advances in imaging technology. Our hybrid imaging system (GE Apollo™…”
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Study of Increased Radiation When an X-ray Tube is Placed in a Strong Magnetic Field by Wen, Z.F., /Stanford U., Dept. Radiol. /Stanford U., Phys. Dept, Pelc, N.J., /Stanford U., Dept. Radiol. /Stanford U., Dept. Bioeng, Nelson, W.R., /SLAC, Fahrig, R., /Stanford U., Dept. Radiol

“…When a fixed anode x-ray tube is placed in a magnetic field (B) that is parallel to the anode-cathode axis, the x-ray exposure increases with increasing B. It…”
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A spatiotemporal model of cyclic kinematics and its application to analyzing nonrigid motion with MR velocity images by Yudong Zhu, Pelc, N.J.

“…The authors present a method (DMESH) for nonrigid cyclic motion analysis using a series of velocity images covering the cycle acquired, for example, from…”
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Adaptation of a Fast 3D PET Reconstruction Algorithm to an Inverse-Geometry CT System by Mazin, S.R., Pelc, N.J.

“…Inverse-geometry CT (IGCT) is a new type of volumetric CT geometry. Volumetric coverage and high isotropic resolution demand a fast 3D reconstruction…”
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Estimation of deformation gradient and strain from cine-PC velocity data [cardiac magnetic resonance imaging] by Yudong Zhu, Drangova, M., Pelc, N.J.

“…Phase contrast magnetic resonance imaging (MRI) can provide in vivo myocardial velocity field measurements. These data allow densely spaced material points to…”
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Blood flow in major cerebral arteries measured by phase-contrast cine MR by Enzmann, DR, Ross, MR, Marks, MP, Pelc, NJ

“…To measure mean blood flow in individual cerebral arteries (carotid, basilar, anterior cerebral, middle cerebral, and posterior cerebral) using a cine phase…”
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Implementation of the derivative back projection - finite Hilbert inverse algorithm in projection reconstruction MRI by Barral, J.K., Pelc, N.J., Pauly, J.M., Nishimura, D.G.

“…The reconstruction of artifact-free images from truncated datasets poses a challenging problem in any medical imaging modality. Such a problem occurs in…”
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Comparison of lesion enhancement on spin-echo and gradient-echo images by Chappell, PM, Pelc, NJ, Foo, TK, Glover, GH, Haros, SP, Enzmann, DR

“…To compare lesion enhancement after injection of gadopentetate dimeglumine on spin-echo and gradient-echo T1-weighted images. A total of 48 contrast-enhancing…”
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Improved image reconstruction from sensitivity-encoded data by wavelet denoising and Tikhonov regularization by Zhi-Pei Liang, Bammer, R., Jim Ji, Pelc, N.J., Glover, G.H.

“…Parallel magnetic resonance imaging through sensitivity encoding using multiple receiver coils has emerged as an effective tool to reduce imaging time…”
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Phase contrast MRI assessment of pedal blood flow by Debatin, J.F., Dalman, R., Herfkens, R.J., Harris, E.J., Pelc, N.J.

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Improved image reconstruction from sensitivity-encoded data by wavelet denoising and Tokhonov regularization by Zhi-Pei Liang, Bammer, R., Ji, J., Pelc, N.J., Glover, G.H.

“…Parallel magnetic resonance imaging through sensitivity encoding using multiple receiver coils has emerged as an effective tool to reduce imaging time…”
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