MR imaging of the pelvis with an endorectal‐external multicoil array

M. D. Schnall, T. Connick, C. E. Hayes, R. E. Lenkinski, H. Y. Kressel

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


Magnetic resonance (MR) images of the pelvis obtained with an endorectal coil have improved resolution relative to that of body coil images; however, they have limited spatial coverage. The sensitivity profile can be improved by using the endorectal coil combined with an external anterior coil as part of a multicoil array. If each coil is connected to a separate receiver, the individual images can be combined to provide an optimal signal‐to‐noise ratio (S/N). The authors have investigated a 5‐inch (12.7‐cm) surface coil or a two‐coil array as the anterior coil. In both of these configurations, the S/N is improved relative to that of the endorectal coil alone at distances greater than 3 cm from the endorectal coil. The anterior two‐coil array provides more lateral coverage. The improved spatial coverage available with this technique expands potential clinical applications of endorectal MR imaging.

Original languageEnglish (US)
Pages (from-to)229-232
Number of pages4
JournalJournal of Magnetic Resonance Imaging
Issue number2
StatePublished - 1992


  • Intracavitary coils
  • Multicoil imaging
  • Pelvis, MR, 80.1214
  • Rectum, MR, 757.1214
  • Surface coils
  • Technology

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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