Siemens MULTI-ECHO EPI 4A21 - User Manual

Siemens MULTI-ECHO EPI 4A21

Siemens MULTI-ECHO EPI 4A21 – User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 2 – Table of Contents
  • Page 3 – Basic principles; RF; Figure 1
  • Page 4 – Figure 2; Processing options
  • Page 5 – Software Installation Procedure
  • Page 7 – Sequences and Protocols; Number of echoes
  • Page 9 – t-test only works properly when motion correction is selected; Remarks on reconstruction performance; Do not move the patient table to the home position
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Works-in-Progress package

Version 2.0

For the

SIEMENS Magnetom under VA21B




Installation and User’s Guide

NUMARIS/4A21


April 4th, 2003

Section of Medical Physics, University Hospital Freiburg, Germany

Contact:

Oliver Speck PhD, Hugstetterstr. 55, D 79106 Freiburg,

email:

[email protected]

, phone: +49 761 2703832

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Summary

Page 2 - Table of Contents

Multi-Echo EPI Page 2 of 9 Numaris/4 VA21B Table of Contents 1 Basic principles ................................................................................................. 3 1.1 Principle of Multi-Echo EPI ........................................................................... 3 1.2 Image ...

Page 3 - Basic principles; RF; Figure 1

Multi-Echo EPI Page 3 of 9 Numaris/4 VA21B 1 Basic principles 1.1 Principle of Multi-Echo EPI The basic timing scheme of Multi-Echo EPI is shown in Figure 1. It is based on the original EPI sequence proposed by Mansfield (1). After a single RF-excitation, n complete EPI images are acquired in a sing...

Page 4 - Figure 2; Processing options

Multi-Echo EPI Page 4 of 9 Numaris/4 VA21B 1.2 Image contrast of Multi-Echo EPI The signal intensity of the single echo images of the Multi-Echo EPI sequence is simply given by: *) 2 / exp( 0 T TE S S − = where S0 is the signal intensity at echo time 0, which corresponds to the proton density for lo...

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