Assessment of pleomorphic adenomas using MRI and dynamic contrast enhanced MRI

Miki Hisatomi, Jun Ichi Asaumi, Yoshinobu Yanagi, Hironobu Konouchi, Hidenobu Matsuzaki, Yasutoshi Honda, Kanji Kishi

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


We evaluated magnetic resonance images (MRI) and the value of dynamic contrast enhanced MRI (DCE-MRI) of pleomorphic adenomas retrospectively. MRI was performed for 18 pleomorphic adenomas, including 11 cases with DCE-MRI. We obtained the following results on the MRI and DCE-MRI. (a) Pleomorphic adenomas showed a predilection for homogeneous intermediate signal intensity on T1-weighted images (T1WI), heterogeneous high signal intensity on T2-weighted images, and heterogeneous enhancement on Gd-T1WI. (b) Of 11 contrast index (CI) curves of pleomorphic adenomas, nine CI curves (81.8%) increased gradually to 600 s or increased gradually, reached a plateau, and sustained the plateau to 600 s. The remaining two (18.2%) increased gradually and decreased gradually thereafter. (c) CI curves reached the maximum CI index at 135-300 s.

Original languageEnglish
Pages (from-to)574-579
Number of pages6
JournalOral Oncology
Issue number6
Publication statusPublished - Sept 2003


  • Dynamic MRI
  • MRI
  • Pleomorphic adenoma
  • Salivary gland tumor

ASJC Scopus subject areas

  • Oral Surgery
  • Oncology
  • Cancer Research


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