Distribution of hyperpolarized xenon in the brain following sensory stimulation: preliminary MRI findings.

Autor: Mary L Mazzanti, Ronn P Walvick, Xin Zhou, Yanping Sun, Niral Shah, Joey Mansour, Jessica Gereige, Mitchell S Albert

Publikováno v: PLoS ONE, Vol 6, Iss 7, p e21607 (2011)

In hyperpolarized xenon magnetic resonance imaging (HP (129)Xe MRI), the inhaled spin-1/2 isotope of xenon gas is used to generate the MR signal. Because hyperpolarized xenon is an MR signal source with properties very different from those generated

Externí odkaz: https://doaj.org/article/e9ed3c3c36e04475838ebf85ce224a50

Assessment of Repeatability of Hyperpolarized Gas MR Ventilation Functional Imaging in Cystic Fibrosis

Autor: Mitchell S. Albert, John P. Roche, Ronn P. Walvick, Mac Johnson, Dawn Baker, Marcus J. Couch, Martyn Botfield, Shaokuan Zheng, Brian O'Sullivan

Publikováno v: Academic Radiology. 21:1524-1529

Rationale and Objectives Hyperpolarized (HP) gas magnetic resonance imaging (MRI) is an advanced imaging technique that provides high-resolution regional information on lung function without using ionizing radiation. Before this modality can be consi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c16a1ca09ca9dee3273702f1776fca82
https://doi.org/10.1016/j.acra.2014.07.008

Marked pericardial inhomogeneity of specific ventilation at total lung capacity and beyond

Autor: Massimo Ferrigno, Jessica Gereige, Yanping Sun, James P. Butler, Peter Lindholm, Mitchell S. Albert, Ronn P. Walvick, Stephen H. Loring

Publikováno v: Sun, Y, Butler, J P, Lindholm, P, Walvick, R P, Loring, S H, Gereige, J, Ferrigno, M & Albert, M S 2009, ' Marked pericardial inhomogeneity of specific ventilation at total lung capacity and beyond ', Respiratory Physiology & Neurobiology, vol. 169, no. 1, pp. 44-9 . https://doi.org/10.1016/j.resp.2009.07.024

Udgivelsesdato: 2009-Oct-31 We measured regional ventilation at 1l above functional residual capacity (FRC+1L) and total lung capacity (TLC) in three normal subjects and four elite breath-hold divers, and above TLC after glossopharyngeal insufflation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4daa0075f406a9d15d6535311f778bac
https://doi.org/10.1016/j.resp.2009.07.024

Evaluation of oxygen sensitivity of hyperpolarized helium imaging for the detection of pulmonary ischemia

Autor: Ronn P, Walvick, John P, Roche, Austin L, Reno, Matthew J, Gounis, Mitchell S, Albert

Publikováno v: Magnetic resonance in medicine. 75(5)

In this study, a new model of pulmonary embolism in rats was developed and tested, to examine if hyperpolarized (HP) (3) He MR images can measure impairment of the exchange of oxygen from the airspaces to the blood during pulmonary embolism.HP (3) He

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::77801b89f1567d3d6b404b27c9775ad7
https://pubmed.ncbi.nlm.nih.gov/26079271

A method for estimating intracellular sodium concentration and extracellular volume fraction in brain in vivo using sodium magnetic resonance imaging

Autor: Richard Kline, Ravinder R. Regatte, Guillaume Madelin, Ronn P. Walvick

Publikováno v: Scientific Reports

In this feasibility study we propose a method based on sodium magnetic resonance imaging (MRI) for estimating simultaneously the intracellular sodium concentration (C1, in mM) and the extracellular volume fraction (α) in grey and white matters (GM,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1772d5cbb180b49469a9a697dad911d5
https://pubmed.ncbi.nlm.nih.gov/24755879