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Showing 1 to 12 of 174 entries
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π Echo-Planar Imaging with concomitant field compensation for porous media MRI.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Xiao D, Balcom BJ.
PMID: 26398928
J Magn Reson. 2015 Nov;260:38-45. doi: 10.1016/j.jmr.2015.08.023. Epub 2015 Sep 07.

The π Echo Planar Imaging (PEPI) method was modified to compensate for concomitant magnetic fields by waveform symmetrization. Samples with very short T2(∗) (a few hundred microseconds) and short T2 (tens of milliseconds to hundreds of milliseconds) were investigated....

BLIPPED (BLIpped Pure Phase EncoDing) high resolution MRI with low amplitude gradients.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Xiao D, Balcom BJ.
PMID: 29112892
J Magn Reson. 2017 Dec;285:61-67. doi: 10.1016/j.jmr.2017.10.013. Epub 2017 Oct 31.

MRI image resolution is proportional to the maximum k-space value, i.e. the temporal integral of the magnetic field gradient. High resolution imaging usually requires high gradient amplitudes and/or long spatial encoding times. Special gradient hardware is often required for...

Mapping B(1)-induced eddy current effects near metallic structures in MR images: a comparison of simulation and experiment.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Vashaee S, Goora F, Britton MM, Newling B, Balcom BJ.
PMID: 25459883
J Magn Reson. 2015 Jan;250:17-24. doi: 10.1016/j.jmr.2014.10.016. Epub 2014 Nov 08.

Magnetic resonance imaging (MRI) in the presence of metallic structures is very common in medical and non-medical fields. Metallic structures cause MRI image distortions by three mechanisms: (1) static field distortion through magnetic susceptibility mismatch, (2) eddy currents induced...

Not all weeds are created equal: A database approach uncovers differences in the sexual system of native and introduced weeds.

Ecology and evolution

Van Etten ML, Conner JK, Chang SM, Baucom RS.
PMID: 28428854
Ecol Evol. 2017 Mar 18;7(8):2636-2642. doi: 10.1002/ece3.2820. eCollection 2017 Apr.

Weedy species provide excellent opportunities to examine the process of successful colonization of novel environments. Despite the influence of the sexual system on a variety of processes from reproduction to genetic structure, how the sexual system of species influences...

Mapping three-dimensional oil distribution with π-EPI MRI measurements at low magnetic field.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Li M, Xiao D, Romero-Zerón L, Marica F, MacMillan B, Balcom BJ.
PMID: 27208417
J Magn Reson. 2016 Aug;269:13-23. doi: 10.1016/j.jmr.2016.05.008. Epub 2016 May 11.

Magnetic resonance imaging (MRI) is a robust tool to image oil saturation distribution in rock cores during oil displacement processes. However, a lengthy measurement time for 3D measurements at low magnetic field can hinder monitoring the displacement. 1D and...

Monitoring oil displacement processes with k-t accelerated spin echo SPI.

Magnetic resonance in chemistry : MRC

Li M, Xiao D, Romero-Zerón L, Balcom BJ.
PMID: 26626141
Magn Reson Chem. 2016 Mar;54(3):197-204. doi: 10.1002/mrc.4362. Epub 2015 Dec 02.

Magnetic resonance imaging (MRI) is a robust tool to monitor oil displacement processes in porous media. Conventional MRI measurement times can be lengthy, which hinders monitoring time-dependent displacements. Knowledge of the oil and water microscopic distribution is important because...

Single-Point Ramped Imaging with T1 Enhancement (SPRITE).

Journal of magnetic resonance. Series A

Balcom BJ, Macgregor RP, Beyea SD, Green DP, Armstrong RL, Bremner TW.
PMID: 8980075
J Magn Reson A. 1996 Nov;123(1):131-4. doi: 10.1006/jmra.1996.0225.

No abstract available.

Distortion-free single point imaging of multi-layered composite sandwich panel structures.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Marble AE, Mastikhin IV, MacGregor RP, Akl M, LaPlante G, Colpitts BG, Lee-Sullivan P, Balcom BJ.
PMID: 15082262
J Magn Reson. 2004 May;168(1):164-74. doi: 10.1016/j.jmr.2004.02.011.

The results of a magnetic resonance imaging (MRI) investigation concerning the effects of an aluminum honeycomb sandwich panel on the B1 and B0 fields and on subsequent image quality are presented. Although the sandwich panel structure, representative of an...

Velocity imaging of highly turbulent gas flow.

Physical review letters

Newling B, Poirier CC, Zhi Y, Rioux JA, Coristine AJ, Roach D, Balcom BJ.
PMID: 15524889
Phys Rev Lett. 2004 Oct 08;93(15):154503. doi: 10.1103/PhysRevLett.93.154503. Epub 2004 Oct 05.

We introduce a noninvasive, quantitative magnetic resonance imaging (MRI) wind-tunnel measurement in flowing gas (>10 m s(-1)) at high Reynolds numbers (Re>10(5)). The method pertains to liquids and gases, is inherently three dimensional, and extends the range of Re...

Spatially resolved measurement of rock core porosity.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Marica F, Chen Q, Hamilton A, Hall C, Al T, Balcom BJ.
PMID: 16216540
J Magn Reson. 2006 Jan;178(1):136-41. doi: 10.1016/j.jmr.2005.09.003. Epub 2005 Oct 07.

Density weighted, centric scan, Conical SPRITE MRI techniques are applied in the current work for local porosity measurements in fluid saturated porous media. The methodology is tested on a series of sandstone core samples. These samples vary in both...

Phantom materials for single point imaging pulse sequences.

Solid state nuclear magnetic resonance

MacMillan B, Burke B, Balcom B, Ziegler G.
PMID: 16043332
Solid State Nucl Magn Reson. 2005 Sep;28(2):106-10. doi: 10.1016/j.ssnmr.2005.06.004. Epub 2005 Jul 25.

The popularity of pure phase encode MRI techniques, including single point imaging (SPI), is steadily increasing, particularly in instances where the samples of interest are solid-like, or for other reasons possess short effective transverse relaxation times, T2*. As the...

HCV treatment in difficult patients: study two.

Current gastroenterology reports

Bacon BR.
PMID: 15701289
Curr Gastroenterol Rep. 2005 Feb;7(1):9.

No abstract available.

Showing 1 to 12 of 174 entries