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Gynecology
Anatomy
Anatomy of Anal Canal and Anal Sphincter Complex
Anatomy of Anal Canal and Anal Sphincter Complex
Rania Farouk El Sayed, MD, PhD
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TERMINOLOGY

  • Abbreviations

    • Anal sphincter complex (ASCX)

GROSS ANATOMY

  • Rectum and Anal Canal

    • Anal Sphincter Complex

      Imaging Anatomy

      • Static MR of Anal Sphincter

        • Endoanal MR

          Endoanal Sonography

          • Technique

            • Normal Anatomy and Diagnostic Criteria

              Conventional Evacuation Proctography Defecography

              • Indications

                • Technique

                  • Image Analysis

                    • Findings in Normal Subjects

                      Selected References

                      1. El Sayed RF: Magnetic resonance imaging of the female pelvic floor: anatomy overview, indications, and imaging protocols. Radiol Clin North Am. 58(2):291-303, 2020
                      2. Erlichman DB et al: MRI anatomy and pathology of the anal canal. J Magn Reson Imaging. 50(4):1018-32, 2019
                      3. Erden A: MRI of anal canal: normal anatomy, imaging protocol, and perianal fistulas: part 1. Abdom Radiol (NY). 43(6):1334-52, 2018
                      4. Beets-Tan RG et al: Measurement of anal sphincter muscles: endoanal US, endoanal MR imaging, or phased-array MR imaging? A study with healthy volunteers. Radiology. 220(1):81-9, 2001
                      Related Anatomy
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                      Related Differential Diagnoses
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                      References
                      Tables

                      Tables

                      TERMINOLOGY

                      • Abbreviations

                        • Anal sphincter complex (ASCX)

                      GROSS ANATOMY

                      • Rectum and Anal Canal

                        • Anal Sphincter Complex

                          Imaging Anatomy

                          • Static MR of Anal Sphincter

                            • Endoanal MR

                              Endoanal Sonography

                              • Technique

                                • Normal Anatomy and Diagnostic Criteria

                                  Conventional Evacuation Proctography Defecography

                                  • Indications

                                    • Technique

                                      • Image Analysis

                                        • Findings in Normal Subjects

                                          Selected References

                                          1. El Sayed RF: Magnetic resonance imaging of the female pelvic floor: anatomy overview, indications, and imaging protocols. Radiol Clin North Am. 58(2):291-303, 2020
                                          2. Erlichman DB et al: MRI anatomy and pathology of the anal canal. J Magn Reson Imaging. 50(4):1018-32, 2019
                                          3. Erden A: MRI of anal canal: normal anatomy, imaging protocol, and perianal fistulas: part 1. Abdom Radiol (NY). 43(6):1334-52, 2018
                                          4. Beets-Tan RG et al: Measurement of anal sphincter muscles: endoanal US, endoanal MR imaging, or phased-array MR imaging? A study with healthy volunteers. Radiology. 220(1):81-9, 2001