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(2005-04-15 18:44:57) 下一個
Continuous Wave Doppler: Left Parasternal Transducer Position

NC020a-2.jpg

CW Beam in the Right Ventricular Outflow Tract and Pulmonary Artery

CW Beam:    In the Right Ventricular Outflow Tract and Pulmonary Artery
Normal Flow:    Systolic
Abnormal Findings:
  1. Increased systolic flow velocity and spectral broadening due to a subpulmonic stenosis or to a ventricular septal defect.
  2. High velocity retrograde diastolic flow and spectral broadening due to pulmonic insufficiency.


NC020b-2.jpg

CW Beam in the Right Vetricular Inflow Tract and Right Atrium

CW Beam:    In the Right Ventricular Inflow Tract and Right Atrium
Normal Flow:    Primarily diastolic
Abnormal Findings:
  1. Increased diastolic flow velocity and spectral broadening due to tricuspid stenosis.
  2. High velocity retrograde systolic flow and spectral broadening due to tricuspic insufficiency.

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