مرکز منطقه ای اطلاع رساني علوم و فناوري - Magnetic Resonance Imaging of Hyperpolarized <formula formulatype="inline"> <img src="/images/tex/19533.gif" alt="^{3}{\\hbox {He}}"> </formula> Detected With a High-<formula formulatype="inline"> <img src="/images/tex/19534.gif" alt="{\\hbox {T}}

Title :

Magnetic Resonance Imaging of Hyperpolarized $^{3}{\\hbox {He}}$ Detected With a High- ${\\hbox {T}}_{\\rm c</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Author : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>Chen, Hsin-Hsien ; Yang, Hong-Chang ; Horng, Herng-Er ; Liao, S.H. ; Yang, Shieh-Yueh ; Chen, K.L. ; Wang, L.M. ; Chen, M.J.</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Author_Institution : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>Inst. of Electro-Opt. Sci. & Technol., Nat. Taiwan Normal Univ., Taipei, Taiwan</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Volume : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>21</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Issue : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>3</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>fYear : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>2011</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>fDate : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>6/1/2011 12:00:00 AM</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Firstpage : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>505</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Lastpage : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>508</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Abstract : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>Nuclear magnetic resonance and imaging (NMR/MRI) of optically pumped (OP) hyperpolarized <sup>3</sup>He were studied by using a high-T<sub>c</sub> SQUID magnetometer device in microtesla magnetic fields. The OP cell was filled with a few milligrams of Rb metal, 0.0798 bar N<sub>2</sub> gas and 0.705 bar <sup>3</sup>He gas. The <sup>3</sup>He cell had been hyperpolarized at an optical pumping system for 5 ~ 6 hours first; then it was moved to the SQUID-detected nuclear magnetic resonance and imaging system to measure. An appropriate B<sub>1</sub> pulse level and time duration generated a 5° low flip angle of polarization. The free induction decay NMR signals were measured. The spin-lattice relaxation time (T<sub>1</sub>) of <sup>3</sup>He was 4.7 hours. We improved the line width of NMR spectrum to 0.8 Hz by compensating the inhomogeneous gradient field of environment. The filtered back projection image of hyperpolarized <sup>3</sup>He could show a clear image in one shot. The SQUID-detected NMR/MRI would be a great interest for biological imaging.</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Keywords : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>SQUID magnetometers; helium neutral molecules; magnetic resonance imaging; optical coherent transients; optical pumping; spin-lattice relaxation; <sup>3</sup>He; B<sub>1</sub> pulse level; NMR spectrum line width; OP cell; Rb metal; SQUID-detected NMR-MRI; SQUID-detected nuclear magnetic resonance; biological imaging; filtered back projection image; free induction decay NMR signals; frequency 0.8 Hz; high-T<sub>c</sub> SQUID magnetometer device; hyperpolarized 3He; inhomogeneous gradient field; laboratory environment fields; magnetic resonance imaging; microtesla magnetic field; nuclear magnetic resonance and imaging; optical pumping system; polarization angle; pressure 0.0798 bar; pressure 0.705 bar; spin-lattice relaxation time; time 4.7 h; Coils; Helium; Magnetic noise; Magnetic resonance imaging; Nuclear magnetic resonance; Optical pumping; SQUIDs; Flux coupling; NMR/MRI; SQUID; hyperpolarized gas;</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>fLanguage : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>English</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Journal_Title : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>Applied Superconductivity, IEEE Transactions on</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Publisher : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>ieee</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>ISSN : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>1051-8223</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Type : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>jour</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>DOI : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>10.1109/TASC.2010.2084057</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Filename : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>5621847</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Link To Document : </div><div class='valueDiv leftDirection leftAlign fullRecValueEnglish col-xs-8 col-sm-10'><a href='https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=1370215' target='_blank'>https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=1370215</a></div> </div> </div> <div class='leftDiv labelDiv leftAlign backLinkEnglish'><a href='javascript:history.back()'><img src='../CSS/Back.png' class='backImage' alt=$