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

Membrane Order and Molecular Dynamics Associated with IgE Receptor Cross-Linking in Mast Cells

Autor: Ronn P. Walvick, Yuexin Liu, Angel M. Davey, Erin D. Sheets, Ahmed A. Heikal

Publikováno v: Biophysical Journal. 92(1):343-355

Cholesterol-rich microdomains (or "lipid rafts") within the plasma membrane have been hypothesized to exist in a liquid-ordered phase and play functionally important roles in cell signaling; however, these microdomains defy detection using convention

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fb39d3aba38ca23abcbd327ba787526

Point-spread function-based characterization of optical systems

Autor: Richard Gifford, Y. G. Soskind, C. D. Giranda, Ronn P. Walvick, D. N. Laslo

Publikováno v: SPIE Proceedings.

The response of an optical systems to a point source, known as the point-spread function (PSF), represents one of the most fundamental characteristics of an optical system. The PSF varies as a function of source spectral composition as well as positi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::32f0510aab975e7649488299d5bd2e3e
https://doi.org/10.1117/12.2040217