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Summary of C-RADS for CT Colonography
Siva P. Raman, MD
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KEY FACTS

  • Terminology

    TERMINOLOGY

    • Definitions

      • CT Colonography Reporting and Data System (C-RADS) is ACR system for reporting and management of both colonic and extracolonic findings on CT colonography exams
      • Provides assessment categories for both colonic and extracolonic findings with management recommendations
      • Intended for use with dedicated CT colonography exams; not for incidental colonic findings in routine abdominal/pelvic CT exams

    IMAGING ANATOMY

    • C-RADS Imaging Descriptors

      CLINICAL IMPLICATIONS

      • C-RADS Management of Colonic Findings

        • C-RADS Management of Extracolonic Findings

          Selected References

          1. An JY et al: BI-RADS, C-RADS, CAD-RADS, LI-RADS, Lung-RADS, NI-RADS, O-RADS, PI-RADS, TI-RADS: reporting and data systems. Radiographics. 39(5):1435-6, 2019
          2. Dachman AH et al: Structured reporting and quality control in CT colonography. Abdom Radiol (NY). 43(3):566-73, 2018
          3. Expert Panel on Gastrointestinal Imaging et al: ACR Appropriateness Criteria® colorectal cancer screening. J Am Coll Radiol. 15(5S):S56-68, 2018
          4. Pooler BD et al: Indeterminate but likely unimportant extracolonic findings at screening CT colonography (C-RADS category E3): incidence and outcomes data from a clinical screening program. AJR Am J Roentgenol. 207(5):996-1001, 2016
          5. Pooler BD et al: CT Colonography Reporting and Data System (C-RADS): benchmark values from a clinical screening program. AJR Am J Roentgenol. 202(6):1232-7, 2014
          6. Badiani S et al: Extracolonic findings (ECF) on CT colonography (CTC) in patients presenting with colorectal symptoms. Acta Radiol. 54(8):851-62, 2013
          7. Summers RM: Polyp size measurement at CT colonography: what do we know and what do we need to know? Radiology. 255(3):707-20, 2010
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          References
          Tables

          Tables

          KEY FACTS

          • Terminology

            TERMINOLOGY

            • Definitions

              • CT Colonography Reporting and Data System (C-RADS) is ACR system for reporting and management of both colonic and extracolonic findings on CT colonography exams
              • Provides assessment categories for both colonic and extracolonic findings with management recommendations
              • Intended for use with dedicated CT colonography exams; not for incidental colonic findings in routine abdominal/pelvic CT exams

            IMAGING ANATOMY

            • C-RADS Imaging Descriptors

              CLINICAL IMPLICATIONS

              • C-RADS Management of Colonic Findings

                • C-RADS Management of Extracolonic Findings

                  Selected References

                  1. An JY et al: BI-RADS, C-RADS, CAD-RADS, LI-RADS, Lung-RADS, NI-RADS, O-RADS, PI-RADS, TI-RADS: reporting and data systems. Radiographics. 39(5):1435-6, 2019
                  2. Dachman AH et al: Structured reporting and quality control in CT colonography. Abdom Radiol (NY). 43(3):566-73, 2018
                  3. Expert Panel on Gastrointestinal Imaging et al: ACR Appropriateness Criteria® colorectal cancer screening. J Am Coll Radiol. 15(5S):S56-68, 2018
                  4. Pooler BD et al: Indeterminate but likely unimportant extracolonic findings at screening CT colonography (C-RADS category E3): incidence and outcomes data from a clinical screening program. AJR Am J Roentgenol. 207(5):996-1001, 2016
                  5. Pooler BD et al: CT Colonography Reporting and Data System (C-RADS): benchmark values from a clinical screening program. AJR Am J Roentgenol. 202(6):1232-7, 2014
                  6. Badiani S et al: Extracolonic findings (ECF) on CT colonography (CTC) in patients presenting with colorectal symptoms. Acta Radiol. 54(8):851-62, 2013
                  7. Summers RM: Polyp size measurement at CT colonography: what do we know and what do we need to know? Radiology. 255(3):707-20, 2010