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  • Title: Measurement of colonic transit using a delayed-release capsule containing radio-opaque markers.
    Author: Park JM, Choi MG, Choi H, Cho YK, Oh JH, Lee IS, Kim SW, Choi KY, Chung IS.
    Journal: Scand J Gastroenterol; 2008; 43(5):545-50. PubMed ID: 18415746.
    Abstract:
    OBJECTIVE: Colonic transit scintigraphy has several advantages in comparison with radio-opaque marker (ROM) techniques but it is limited to specialized centers. The aim of the study was to validate the ROM technique for measuring colonic transit using delayed-release capsules. MATERIAL AND METHODS: Colonic transit is expressed as the sum of the weighted mean marker residence times in the colon (geometric centers). Delayed-release capsules containing radio-opaque markers (DC-ROMs) or scintigraphic methods were compared simultaneously in 10 healthy volunteers. Reproducibility and responsiveness of DC-ROM measurements were evaluated in 10 healthy volunteers at an interval of 2 weeks and after bisacodyl treatment, respectively. RESULTS: The transit profiles between the scintigraphic and DC-ROM methods were highly correlated (r = 0.994, p < 0.01). The reproducibility and responsiveness of DC-ROM measurements were good. Colonic transit measured by DC-ROM correlated with the stool form scale (r = 0.66, p < 0.01). CONCLUSION: The DC-ROM test is simple, highly reproducible, responsive, and appropriate for clinical trials and clinical practice.
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