localization y học

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localization y học

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Cardiovascular Localization Contents Cardiac Localization  Chambers & Great Vessels  Valves  Coronary Arteries Cardiac Localizers Multi-Plane Transverse Coronal Sagittal Cardiac Localizers *Pseudo 2-Chamber Vertical Long Axis Localization : Parallel to ventricular septum in transverse view Bisect LV chamber in transverse view Use large FOV to avoid phase wrap Cardiac Localizers *Pseudo 4-Chamber Horizontal Long Axis Localization : Parallel to long axis in chamber view Bisect mitral valve and bisect apex Use large FOV to avoid phase wrap Cardiac Localizers *Pseudo Short Axis Localization : Perpendicular to long axis on chamber view Multiple slices with coverage from atria to apex Use large FOV to avoid phase wrap Cardiac Localizers True 2-Chamber Vertical Long Axis Localization : Bisects LV apex (1) and mitral valve (2) in chamber view Through mid LV chamber (3) in short axis view Parallel to ventricular septum in both views Use large FOV to avoid phase wrap Cardiac Anatomy 2-Chamber Vertical Long Axis Anterior Wall Left Atrium Left Ventricle Mitral Valve Posterior Wall Cardiac Localizers True 4-Chamber Horizontal Long Axis Localization : Through mid LV chamber and RV apex (1) in mid short axis view Avoid LV outflow tract (2) in basal short axis view Parallel to long axis in chamber view Use large FOV to avoid phase wrap Cardiac Anatomy 4-Chamber Horizontal Long Axis Right Ventricle Ventricular Septum Right Atrium Left Ventricle Tricuspid Valve Atrial Septum Mitral Valve Left Atrium Cardiac Localizers Right Ventricular Inflow Tract 2 3 Localization : Parallel to ventricular septum and bisect tricuspid valve (1) in chamber view Bisect RV outflow tract (2) and Rt atrium (3) in basal short axis views Use large FOV to avoid phase wrap Cardiac Anatomy Right Ventricular Inflow Tract Ascending Aorta Pulmonary Artery Superior Vena Cava Pulmonic Valve Right Atrium Right Ventricle Tricuspid Valve Posterior RV Wall Cardiac Localizers Right Ventricular Outflow Tract Localization : Bisect pulmonary artery on transverse view (1) Bisect pulmonic valve on right ventricular inflow view (2) Use large FOV to avoid phase wrap Cardiac Anatomy Right Ventricular Outflow Tract Aortic Arch Pulmonic Valve Pulmonary Artery Right Ventricular Outflow Tract Left Ventricle Cardiac Localizers Valves Aortic Valve Mitral Valve Tricuspid Valve Pulmonic Valve Cardiac Localizers Aortic Valve open Localization: closed • Position across aortic valve (arrows) in LVOT & aortic views Cardiac Anatomy Aortic Valve Right Ventricle Tricuspid Valve Right Atrium Right Cusp RVOT Comissure Left Cusp Posterior Cusp Left Atrium Comissure Aorta Descendens Cardiac Localizers Mitral Valve Localization: • Position across mitral valve (arrows) in 2-chamber, 3-chamber, and 4-chamber views Closed Open Cardiac Anatomy Mitral Valve Pulmonic Valve Anterior Leaflet Comissure Posterior Leaflet Right Atrium Vena Cava Inferior Cardiac Localizers Tricuspid Valve Open Localization: • Position across tricuspid valve (arrows) in RV inflow and 4-chamber views Closed Cardiac Anatomy Tricuspid Valve Right Leaflet Mitral Valve Tricuspid Valve Orifice Left Leaflet Posterior Leaflet Cardiac Localizers Pulmonic Valve Closed Localization: Open • Position across pulmonic valve (arrow) in RVOT view Cardiac Anatomy Pulmonic Valve Ascending Aorta Pulmonic Valve Right Atrium Left Atrium Descending Aorta Cardiac Localizers Right Coronary Artery (RCA) Localization: Acquire a stack of 2D axial localizers from a coronal localizer Use 3-point tool (arrows) to create slab orientation along RCA from base to apex Again use 3-point tool to fine tune the location of the slab Resulting images should lay out RCA in-plane with Thin-MIP Cardiac Localizers Left Anterior Descending Artery (LAD) Localization: Acquire a stack of 2D coronal localizers through aortic root Position axial oblique slab along LAD from its origin (arrow) toward apex Use 3-point tool (arrows) to identify the origin and distal points along LAD Resulting images should lay out LAD in-plane with Thin-MIP ... Anatomy Aortic Outflow Tract Ascending Aorta Pulmonary Artery Aortic Valve Right Atrium Papillary Muscle Right Ventricle Left Ventricle Cardiac Localizers Right Ventricular Inflow Tract 2 3 Localization. .. Outflow Tract Localization : Bisect pulmonary artery on transverse view (1) Bisect pulmonic valve on right ventricular inflow view (2) Use large FOV to avoid phase wrap Cardiac Anatomy Right Ventricular... in RVOT view Cardiac Anatomy Pulmonic Valve Ascending Aorta Pulmonic Valve Right Atrium Left Atrium Descending Aorta Cardiac Localizers Right Coronary Artery (RCA) Localization: Acquire a stack

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