Technical basis for magnetic resonance images

Angelo Passerini, Liliana Strada, Marina Grisoli, Maurizio Sberna, Maria Grazia Bruzzone

Research output: Contribution to journalArticle

Abstract

The spin-echo procedure is the basic technique in a magnetic resonance (MR) study (the magnetization vector is flipped by 90° onto the ortogonal plane to the main magnetic field). Very soon after the MR procedure was developed, it was pointed out how important it is to achieve the needed contrast with shorter repetition times (TRs) to reduce the imaging time. Recently, fast imaging techniques have been introduced (partial flip angles, short TRs, and the lack of 180° radiofrequency pulses to refocus the spins are their main characteristics; the spins are refocused by the application of a gradient reversal technique). These techniques are particularly needed in pediatric neuroradiology, where the examination time must be as short as possible. At present, partial flip-angle techniques are almost completely replacing the conventional spin-echo procedure, but the variations in flip angle could result in a change in contrast. For these reasons, conventional spin-echo techniques may still be useful in a routine MR study.

Original languageEnglish
Pages (from-to)33-36
Number of pages4
JournalChild's Nervous System
Volume6
Issue number1
DOIs
Publication statusPublished - Jan 1990

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Magnetic Resonance Spectroscopy
Magnetic Fields
Pediatrics

Keywords

  • Magnetic resonance
  • Technology

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Clinical Neurology

Cite this

Technical basis for magnetic resonance images. / Passerini, Angelo; Strada, Liliana; Grisoli, Marina; Sberna, Maurizio; Bruzzone, Maria Grazia.

In: Child's Nervous System, Vol. 6, No. 1, 01.1990, p. 33-36.

Research output: Contribution to journalArticle

Passerini, Angelo ; Strada, Liliana ; Grisoli, Marina ; Sberna, Maurizio ; Bruzzone, Maria Grazia. / Technical basis for magnetic resonance images. In: Child's Nervous System. 1990 ; Vol. 6, No. 1. pp. 33-36.
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