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Vertical field MR imaging of upper thorax and spine in small children. Evaluation of a new surface coil

Author:
  • Sara Brockstedt
  • N Malmgren
  • Lars Malmgren
  • M L Ivarsson
  • Elna-Marie Larsson
  • Stig Holtås
  • Freddy Ståhlberg
Publishing year: 1993
Language: English
Pages: 549-553
Publication/Series: Acta Radiologica
Volume: 34
Issue: 6
Document type: Journal article
Publisher: John Wiley & Sons

Abstract english

To improve image quality in a vertical field MR imaging unit, operating at low field strength (0.3 T), we have designed a half-elliptical coil for use in the upper thoracic region of small children. Our intention was also to shorten the examination time, which until now has been long, because several scans with different coils have been necessary to cover the thoracic region. The experimental coil is designed so that a child's shoulders fit into the central region. The coil consists of 2 serially connected cable-loops, mounted on a foam rubber vest. The coil performance was tested in a phantom and improvements relative to standard coils were demonstrated in in vivo studies. The results indicate that by using the half-elliptical coil, the signal-to-noise (S/N) ratio can be improved by a factor of 2 to 3 in the thoracic region of a child.

Keywords

  • Radiology, Nuclear Medicine and Medical Imaging

Other

Published
  • ISSN: 1600-0455
Freddy Ståhlberg
E-mail: freddy.stahlberg [at] med.lu.se

Professor

Medical Radiation Physics, Lund

+46 46 17 31 19

+46 70 688 31 19

32

Professor

Diagnostic Radiology, (Lund)

+46 46 17 70 30

32