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  1. Home
  3. The Variability In Interpretation Of Colonic Codes In Ct Colonography Reporting: A Single-centre Experience.
  1. Home
  3. The Variability In Interpretation Of Colonic Codes In Ct Colonography Reporting: A Single-centre Experience.

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The variability in interpretation of colonic codes in CT colonography reporting: a single-centre experience.

C Clarke1, A Gangi-Burton1

  • 1Department of Radiology, Nottingham University Hospitals NHS Trust, Nottingham, UK.

Clinical Radiology
|November 8, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Standardized colonic findings codes (C-codes) on computed tomography colonography (CTC) show varied interpretation among reporters. This study found fair agreement, highlighting a need for clearer guidance to improve consistency in reporting C-codes.

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Area of Science:

  • Radiology
  • Medical Imaging
  • Gastroenterology

Background:

  • Standardized summary codes (C-codes) for colonic findings on computed tomography colonography (CTC) are established but lack clear interpretation guidelines.
  • Varied interpretation of C-codes can impact diagnostic accuracy and patient management.

Purpose of the Study:

  • To assess the current demographics and reporting practices of CTC C-codes at a specific hospital.
  • To determine the level of agreement among CTC reporters when utilizing C-codes for classifying colonic findings.

Main Methods:

  • An online questionnaire study was conducted among radiologists, reporting radiographers, and radiology trainees involved in CTC reporting.
  • The questionnaire included demographic questions and 11 case scenarios to assess C-code interpretation agreement.
  • Agreement was quantified using Fleiss kappa and mean pairwise agreement statistics.

    • Main Results:

    • A high response rate (85.7%) was achieved, with most participants (94.4%) reporting consistent use of C-codes.
    • Overall agreement for C-code interpretation across 11 case scenarios was fair (kappa = 0.39), with a mean pairwise agreement of 46.9%.
    • Higher agreement was observed among reporters with less CTC experience (≤1000 cases), those reporting diminutive polyps, and with adequate case scenarios.

    Conclusions:

    • The study reveals significant variation in the interpretation of CTC C-codes within the institution.
    • There is a need for formal implementation guidance to standardize C-code usage.
    • A national survey is recommended to assess the prevalence of this issue and inform UK-wide guidelines for the Bowel Cancer Screening Programme.