002 // How to Image How To Move The Transducer Displacement Rotation Angulation NOTE: Use enough US gel! Imaging Windows Parasternal 2nd - 4th intercostal space left sternal border Apical 4th - 5th intercostal space, lateral! Subcostal Below xiphoid Right parasternal 2nd - 4th intercostal space, right sternal border Suprasternal Jugulum sternum NOTE: Use as many views as possible including atypical views and always image so that the pathology of interest is best seen. 1 002 // How to Image Image View Parasternal long axis views Parasternal long axis view Right parasternal long axis 2 002 // How to Image Parasternal short axis views Parasternal short axis – Base Parasternal short axis – MV Parasternal short axis – Mid Ventricle 3 002 // How to Image Apical Views Rotate counterclockwise 4 chamber view 2 chamber view 3 chamber view The orientation of the septum denotes whether you are in a lateral or medial position relative to the true apex. Use all views to fully examine all aspects of the left and right ventricle. Orientation of the apical views 5 chamber view 4 002 // How to Image Coronary sinus view NOTE: Avoid foreshortening, place the transducer as lateral and caudal as possible Subcostal Views Subcostal 4 chamber view Inferior vena cava view (rotate counterclockwise) NOTE: In some patients it is also possible to visualize the superior vena cava in this view. Subcostal short axis view (rotate clockwise) NOTE: Perform subcostal views in all patient 5 002 // How to Image Subcostal Views Subcostal 4 chamber view Inferior vena cava view (rotate counterclockwise) NOTE: In some patients it is also possible to visualize the superior vena cava in this view. Subcostal short axis view (rotate clockwise) NOTE: Perform subcostal views in all patient 6 002 // How to Image Reference Values — MMode NOTE: MMode - LA is measured in its largest extension at end-systole. Aortic dimension is measured at end-diastole, shortly before the aortic valve opens! Aorta (mm) < 40 LVEDD (mm) 42 - 59 Left atrium (mm) 30 - 40 Posterior wall (mm) 6 - 10 IVS (mm) 6 - 10 Fractional Shortening (%) > 25 Tricuspid Annular Plane Systolic Excursion (TAPSE) > 16mm MAPSE (longitudinal LV function) > 12mm Reference Values — Doppler Aortic valve velocity (m/sec) CW 0.9 - 1.7 LVOT velocity (m/sec) PW < 1.3 Pulmonic valve velocity (m/sec) CW 0.5 - 1.0 Tricuspid valve PW 0.3 - 0.7 Tricuspid regurgitation (m/sec) CW 1.7— 2.3 E wave (m/sec) PW < 1.3 Mitral annulus e‘ (cm/sec) TDI PW 0.8 - 1.3 Right ventricular lateral wall (cm/sec) TDI PW 12.2 (41-60a) / 10.4 (>60a) Color Doppler 2D before color! Look for aliasing to detect jets Reduce PRF to detect low velocity flow (e.g. ASD, PFO) Use higher frame rates Use multiple views Color as guide for CW/ PW NOTE: Don´t expect to see the full extent and size of a color Doppler jet if 2D image quality is poor 7
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