Polyethylene glycol vs. magnesium sulfate as cathartic preparation for CT colonography: comparison of examination quality

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  • WADA Koji
    NTT East Izu Hospital
  • NAGATA Koichi
    NTT East Izu Hospital Division of Screening Technology, Center for Public Health Sciences, National Cancer Center Division of Screening Assessment and Management, Center for Public Health Sciences, National Cancer Center
  • IYAMA Atsushi
    Department of Radiology, Sakakibara Sapia Tower Clinic
  • MARUYAMA Ken
    NTT East Izu Hospital
  • TAKAHASHI Miki
    NTT East Izu Hospital
  • NOMURA Miyuki
    NTT East Izu Hospital
  • TAKIGUCHI Shogo
    NTT East Izu Hospital
  • KANAZAWA Hidenori
    Division of Screening Technology, Center for Public Health Sciences, National Cancer Center
  • TAKABAYASHI Ken
    Division of Screening Technology, Center for Public Health Sciences, National Cancer Center
  • YASUDA Takaaki
    Division of Screening Technology, Center for Public Health Sciences, National Cancer Center
  • MATSUMOTO Hiroshi
    Division of Screening Technology, Center for Public Health Sciences, National Cancer Center
  • MATSUOKA Masaki
    Division of Screening Technology, Center for Public Health Sciences, National Cancer Center
  • MATSUDA Takahisa
    Division of Screening Technology, Center for Public Health Sciences, National Cancer Center
  • SAITO Hiroshi
    Division of Screening Assessment and Management, Center for Public Health Sciences, National Cancer Center

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Other Title
  • 大腸CT検査における腸管前処置PEG-C法とMP-C法の比較試験
  • ダイチョウ CT ケンサ ニ オケル チョウカン マエショチ PEG-Cホウ ト MP-Cホウ ノ ヒカク シケン

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Abstract

The purpose of this study was to compare polyethylene glycol (PEG) vs. magnesium sulfate (MP) as a cathartic preparation for CT colonography regarding examination quality. Forty-eight consecutive patients received a CT colonography using PEG-C preparation. The patients were given 1620 mL of PEG solution, followed by 400 mL of PEG-C solution, consisting of 380 mL of PEG solution plus 20 mL of water soluble contrast medium. Forty-eight consecutive patients received a CT colonography using MP-C preparation. The patients were given 1800 mL of MP solution plus 60 mL of water soluble contrast medium. For the purpose of quality evaluation, the volume of residual fluid or solid stool was graded by blinded two readers from 0 (no feces) to 3 (much amount of feces) in each colonic segment. The CT attenuation values of tagged residual fluid or stool were measured manually by recording of the minimum attenuation values (in HU) in each colonic segment. The mean volume scores of residual fluid for the PEG-C group and the MP-C group were 2.27 and 2.02, respectively. The mean volume scores of solid stool for the PEG-C group and the MP-C group were 0.27 and 0.17, respectively. The minimum CT attenuation values of tagging in both groups were also over 200HU. Examination quality was similarly adequate in both PEG-C and MP-C preparation.

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