For this document, the panel only considered the 2 clinical tasks required for preprocedure screening: (Variant 1) assessment of aortic annulus and aortic root, to help guide the choice of the valve prosthesis, and (Variant 2) assessment of supravalvular aorta and vascular access for potential determination of vascular access site and road mapping the desired device delivery. Special Imaging Considerations For the purposes of distinguishing between CT and CT angiography (CTA), ACR Appropriateness Criteria topics use the definition in the ACR-NASCI-SIR-SPR Practice Parameter for the Performance and Interpretation of Body Computed Tomography Angiography (CTA) [33]: All elements are essential: 1) timing, 2) reconstructions/reformats, and 3) 3-D renderings. Standard CTs with contrast also include timing issues and reconstructions/reformats. Only in CTA, however, is 3-D rendering a required element. This corresponds to the definitions that the CMS has applied to the Current Procedural Terminology codes. aMassachusetts General Hospital and Harvard Medical School, Boston, Massachusetts. bResearch Author, South Texas Radiology Group, P.A., San Antonio, Texas. cUniversity of Michigan, Ann Arbor, Michigan. dPanel Chair, Brigham & Women's Hospital, Boston, Massachusetts. ePanel Chair, Cleveland Clinic, Cleveland, Ohio. fPanel Vice-Chair, Mayo Clinic, Rochester, Minnesota. gKnight Cardiovascular Institute, Oregon Health & Science University, Portland, Oregon; Society of Cardiovascular Computed Tomography. hSanger Heart and Vascular Institute, Charlotte, North Carolina; American Society of Echocardiography. iUT Southwestern Medical Center, Dallas, Texas; Commission on Nuclear Medicine and Molecular Imaging. jUniversity of Washington School of Medicine, Seattle, Washington; Society for Cardiovascular Magnetic Resonance. kEmory University, Atlanta, Georgia; Committee on Emergency Radiology-GSER.
Preprocedural Planning for Transcatheter Aortic Valve Replacement. For this document, the panel only considered the 2 clinical tasks required for preprocedure screening: (Variant 1) assessment of aortic annulus and aortic root, to help guide the choice of the valve prosthesis, and (Variant 2) assessment of supravalvular aorta and vascular access for potential determination of vascular access site and road mapping the desired device delivery. Special Imaging Considerations For the purposes of distinguishing between CT and CT angiography (CTA), ACR Appropriateness Criteria topics use the definition in the ACR-NASCI-SIR-SPR Practice Parameter for the Performance and Interpretation of Body Computed Tomography Angiography (CTA) [33]: All elements are essential: 1) timing, 2) reconstructions/reformats, and 3) 3-D renderings. Standard CTs with contrast also include timing issues and reconstructions/reformats. Only in CTA, however, is 3-D rendering a required element. This corresponds to the definitions that the CMS has applied to the Current Procedural Terminology codes. aMassachusetts General Hospital and Harvard Medical School, Boston, Massachusetts. bResearch Author, South Texas Radiology Group, P.A., San Antonio, Texas. cUniversity of Michigan, Ann Arbor, Michigan. dPanel Chair, Brigham & Women's Hospital, Boston, Massachusetts. ePanel Chair, Cleveland Clinic, Cleveland, Ohio. fPanel Vice-Chair, Mayo Clinic, Rochester, Minnesota. gKnight Cardiovascular Institute, Oregon Health & Science University, Portland, Oregon; Society of Cardiovascular Computed Tomography. hSanger Heart and Vascular Institute, Charlotte, North Carolina; American Society of Echocardiography. iUT Southwestern Medical Center, Dallas, Texas; Commission on Nuclear Medicine and Molecular Imaging. jUniversity of Washington School of Medicine, Seattle, Washington; Society for Cardiovascular Magnetic Resonance. kEmory University, Atlanta, Georgia; Committee on Emergency Radiology-GSER.