Clinical MR Imaging and Physics: A Tutorial by Haris S. ChrysikopoulosClinical MR Imaging and Physics: A Tutorial by Haris S. Chrysikopoulos

Clinical MR Imaging and Physics: A Tutorial

byHaris S. Chrysikopoulos

Paperback | November 20, 2008

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Keywords Spin > Electromagnetic radiation > Resonance > Nucleus > Hydrogen > Proton > Certain atomic nuclei possess inherent magnetic Let us summarize the MRI procedure. Te patient properties called spin, and can interact with electro- is placed in a magnetic feld and becomes temporarily 1 magnetic (EM) radiation through a process called magnetized. Resonance is achieved through the - resonance. When such nuclei absorb EM energy they plication of specifc pulses of EM radiation, which is proceed to an excited, unstable confguration. Upon absorbed by the patient. Subsequently, the excess - return to equilibrium, the excess energy is released, ergy is liberated and measured. Te captured signal producing the MR signal. Tese processes are not is processed by a computer and converted to a gray random, but obey predefned rules. scale (MR) image. Te simplest nucleus is that of hydrogen (H), con- Why do we need to place the patient in a m- sisting of only one particle, a proton. Because of its net? Because the earth's magnetic feld is too weak to abundance in humans and its strong MR signal, H be clinically useful; it varies from 0. 3-0. 7 Gauss (G). is the most useful nucleus for clinical MRI. Tus, foC r urrent clinical MR systems operate at low, mid or our purposes, MRI refers to MRI of hydrogen, and for h igh feld strength ranging from 0. 1 to 3.
Title:Clinical MR Imaging and Physics: A TutorialFormat:PaperbackDimensions:176 pagesPublished:November 20, 2008Publisher:Springer NatureLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:354077999X

ISBN - 13:9783540779995

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Table of Contents

Resonance.- Electromagnetic Fields.- Macroscopic Magnetization.- Macroscopic Magnetization Revisited.- Excitation Phenomena.- T1 Relaxation (Longitudinal or Spin-Lattice Relaxation).- T2 Relaxation (Transverse or Spin-Spin Relaxation).- Magnetic Substrates of T1 Relaxation.- Magnetic Substrates of T2 Relaxation.- Proton (Spin) Density Contrast.- Partial Saturation.- Free Induction Decay.- Spin Echo.- Integration of T1, T2, and Proton Density Phenomena.- Inversion Recovery.- Image Formation - Fourier Transform - Gradients.- Gradient Echo Imaging.- Pulse Sequences.- Fast or Turbo Spin Echo Imaging.- Selective Fat Suppression.- Chemical Shift Imaging.- Magnetization Transfer Contrast.- Diffusion.- Artifacts.- Noise.- Imaging Time.- Resolution.- Contrast Agents.- Blood Flow.- MR Angiography.- Basics of MR Examinations and Interpretation.

Editorial Reviews

From the reviews:"This introductory book is designed to take readers from the fundamentals of proton interactions to the interpretation of clinical MR imaging studies. . All healthcare professionals are the intended audience. The book is certainly suitable for radiologists interested in MRI or MR technologists wanting to learn the essentials of the technique. . provides a good starting point for those involved in MR imaging with a clinical perspective. It is well-illustrated and practically demonstrates how physical principles directly govern the images of any MR imaging study." (R. Terry Thompson, Doody's Review Service, March, 2009)