Magnetic resonance imaging of the rectum during distension

Annalisa Dal Lago, Alberto E. Minetti, Pietro Biondetti, Maura Corsetti, Guido Basilisco

Research output: Contribution to journalArticlepeer-review


PURPOSE: A knowledge of the relationships between the rectum and its surrounding structures during distention may improve our understanding of the results of studies assessing rectal sensory-motor responses to distention. This magnetic resonance imaging study was designed to assess the shape of the rectum and the degree of distention at which the surrounding structures are compressed. METHODS: Nine healthy patients underwent magnetic resonance imaging of the rectum under resting conditions and after the inflation of a plastic bag to volumes of 50, 100, 150, 200, and 250 ml. The thickness of the rectovesical space was assessed as a measure of the compression of the perirectal structures, and the perception of sensations were recorded. RESULTS: The shape of the rectum changed from being quasicylindrical at distention volumes of

Original languageEnglish
Pages (from-to)1220-1227
Number of pages8
JournalDiseases of the Colon and Rectum
Issue number6
Publication statusPublished - Jun 2005


  • Rectal compliance
  • Rectal distension
  • Rectal tension
  • Visceral sensitivity

ASJC Scopus subject areas

  • Gastroenterology


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