東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Sodium-23 NMR/MRI: New Methods and A...

Xu, Xiang.

Linked to FindBook

Google Book

Amazon

博客來

Sodium-23 NMR/MRI: New Methods and Applications.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Sodium-23 NMR/MRI: New Methods and Applications./
Author:	Xu, Xiang.
Description:	129 p.
Notes:	Source: Dissertation Abstracts International, Volume: 74-07(E), Section: B.
Contained By:	Dissertation Abstracts International74-07B(E).
Subject:	Chemistry, General. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3557043
ISBN:	9781267996565

Sodium-23 NMR/MRI: New Methods and Applications.
Xu, Xiang.

Sodium-23 NMR/MRI: New Methods and Applications. - 129 p.

Source: Dissertation Abstracts International, Volume: 74-07(E), Section: B.

Thesis (Ph.D.)--New York University, 2013.

Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) has evolved into a widely used technique providing diagnostic power in medicine and material sciences due to its high precision and non-invasive nature. 1H NMR/MRI is the most commonly studied nucleus because of its large gyromagnetic ratio and high natural abundance. 23Na is not utilized as much because of its lower sensitivity and fast relaxation. However, with advancements in spectroscopic/imaging hardware, contrast mechanisms and protocols, 23Na NMR/MRI has enjoyed renewed interest as a key probe towards investigative studies. The aim of this thesis is to develop new methods and apply them, as well as existing techniques, to study biological and geophysical systems.

ISBN: 9781267996565Subjects--Topical Terms:

1021807
Chemistry, General.

Sodium-23 NMR/MRI: New Methods and Applications.
LDR:03238nam a2200325 4500 001 1967599
005 20141124080559.5
008 150210s2013 ||||||||||||||||| ||eng d
020 $a 9781267996565
035 $a (MiAaPQ)AAI3557043
035 $a AAI3557043
040 $a MiAaPQ $c MiAaPQ
100 1 $a Xu, Xiang. $3 2104639
245 1 0 $a Sodium-23 NMR/MRI: New Methods and Applications.
300 $a 129 p.
500 $a Source: Dissertation Abstracts International, Volume: 74-07(E), Section: B.
500 $a Adviser: Alexej Jerschow.
502 $a Thesis (Ph.D.)--New York University, 2013.
520 $a Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) has evolved into a widely used technique providing diagnostic power in medicine and material sciences due to its high precision and non-invasive nature. 1H NMR/MRI is the most commonly studied nucleus because of its large gyromagnetic ratio and high natural abundance. 23Na is not utilized as much because of its lower sensitivity and fast relaxation. However, with advancements in spectroscopic/imaging hardware, contrast mechanisms and protocols, 23Na NMR/MRI has enjoyed renewed interest as a key probe towards investigative studies. The aim of this thesis is to develop new methods and apply them, as well as existing techniques, to study biological and geophysical systems.
520 $a In Chapter 1 some basic concepts of NMR and MRI are introduced. In addition, a discussion of quadrupolar dynamics, specifically for spin-3/2 nuclei, is presented to provide the theoretical basis to understand the underlying concepts in Chapters 3 and 5.
520 $a The change in Na+ concentration within cervical tissue during the course of pregnancy was studied Chapter 2. It was determined that the changes of [Na+] correlates with the biochemical measurement of glucosaminoglycan (GAG) which renders 23Na NMR a potential probe in tissue assessment. In addition to providing concentration information, examining the quadrupolar interaction of 23Na nuclei could be very informative. In Chapter 3, the combination of 23Na quadrupolar coupling and diffusion anisotropy allows differentiation of Na + present in specific tissue component of the optic nerve and estimation of the compartmental geometry.
520 $a Chapter 4 and 5 are dedicated to using 23Na NMR/MRI to study the geophysical properties of rock formation. In Chapter 4, 1H/23Na imaging experiments were conducted simultaneously during the flow of salt water through a rock core mimicking the invasion phenomenon in oil exploration. The images reveal that the flow profile for the two species may not necessarily coincide as commonly believed. Further steps are taken in Chapter 5 which aims to study the underlining interactions between Na+ and the core surfaces. A 2D quadrupolar jump-and-return sequence was developed and the result from which uncovered a distribution of quadrupolar coupling that is not seen by conventional methods.
590 $a School code: 0146.
650 4 $a Chemistry, General. $3 1021807
650 4 $a Chemistry, Physical. $3 560527
650 4 $a Chemistry, Analytical. $3 586156
690 $a 0485
690 $a 0494
690 $a 0486
710 2 $a New York University. $b Chemistry. $3 1064483
773 0 $t Dissertation Abstracts International $g 74-07B(E).
790 $a 0146
791 $a Ph.D.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3557043