Preoperative staging of rectal cancer; comparison between MR and CT

S. Higano, S. Takahashi, K. Sakamoto, K. Koyama, I. Kuwashima, Y. Kayaba, H. Ono, H. Tateno, K. Otawa, M. Nakajima, T. Hishinuma, H. Asakawa

Research output: Contribution to journalArticlepeer-review

Abstract

Seventeen patients with pathologically proved rectal cancer were prospectively evaluated by CT and MR before surgery. MR were performed with intraluminal air injection to the rectum, and CT with contrast medium. We also compared dynamic MR with i.v. Gd-DTPA injection to T 2-weighted images (T 2 WI) in evaluating invasion of the proper muscular layer in 10 cases. CT was slightly superior to MR in evaluating metastatic perirectal lymph nodes probably due to higher spatial resolution. MR was fairly superior in diagnosis of the wall invasion and adjacent organ extension. The dynamic MR was less effective than T 2 WI because of lower spatial resolution and degraded signal-to-noise ratio.

Original languageEnglish
Pages (from-to)199-206
Number of pages8
JournalJapanese Journal of Clinical Radiology
Volume40
Issue number2
Publication statusPublished - 1995
Externally publishedYes

Keywords

  • computed tomography
  • diagnosis
  • magnetic resonance
  • rectal cancer

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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