Uniform prostate imaging and spectroscopy at 7 T: comparison between a microstrip array and an endorectal coil

B. van den Bergen, D.W.J. Klomp, A.J.E. Raaijmakers, C.A. de Castro, V.O. Boer, H. Kroeze, P.R. Luijten, J.J.W. Lagendijk, C.A.T. van den Berg

Research output: Contribution to journalArticleAcademicpeer-review

30 Citations (Scopus)

Abstract

An endorectal coil and an eight-element microstrip array were compared for prostate imaging at 7 T. An extensive radiofrequency safety assessment was performed with the use of finite difference time domain simulations to determine safe scan parameters. These simulations showed that the endorectal coil can deliver substantially more B(1)(+) to the prostate than can the microstrip array within the specific absorption rate safety guidelines. However, the B(1)(+) field of the endorectal coil is very inhomogeneous, which makes the use of adiabatic pulses compulsory for T(1) - or T(2) -weighted imaging. As a consequence, a full prostate examination is only possible in a feasible amount of time when the microstrip array is used for T(1) - and T(2) -weighted imaging, whereas the endorectal coil is required for spectroscopic imaging. The pulse parameters were optimised within the specific absorption rate guidelines and thereafter used to provide a good illustration of the possibilities of prostate imaging at 7 T.

Original languageEnglish
Pages (from-to)358-365
Number of pages8
JournalNMR in Biomedicine
Volume24
Issue number4
DOIs
Publication statusPublished - May 2011
Externally publishedYes

Keywords

  • Computer Simulation
  • Humans
  • Magnetic Resonance Spectroscopy
  • Male
  • Phantoms, Imaging
  • Prostate
  • Rectum
  • Reproducibility of Results
  • Temperature
  • Comparative Study
  • Journal Article

Fingerprint

Dive into the research topics of 'Uniform prostate imaging and spectroscopy at 7 T: comparison between a microstrip array and an endorectal coil'. Together they form a unique fingerprint.

Cite this