1: Measure the RVOT diameter in centimeters.
The optimal view is the RVIO view. Caliper the
RVOT as close to the valve as possible, in mid systole.
2: Obtain a continuous wave doppler of the pulmonary
valve. The optimal view is the short axis of the
aortic arch. In this view the pulmonary valve
is in it's long axis and provides the best angle to
doppler the gradient's across the valve. An
alternative view is the deep transgastric view around
90 degrees. The pulmonic valve should be viewable
in most instances, however, the angle for the doppler
scan may be off more than 20 degrees. Once the
view is obtained turn on the CWD and use the track
ball to move the CWD line to the pulmonary valve.
A doppler profile of the pulmonary valve should be
displayed. Trace the flow profile with the trackball
and the VTI will be calculated.
This activity has been planned and implemented in accordance with the accreditation requirements and policies of the Accreditation Council for Continuing Medical Education through the joint providership of University of Nebraska Medical Center, Center for Continuing Education and JLS Interactive, LLC.
The University of Nebraska Medical Center, Center for Continuing Education is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians.
This activity is approved by the American Society of Radiologic Technologists (ASRT) as sonography-related continuing education (CE). Credit(s) issued for successful completion of ASRT-approved CE activities are accepted by the American Registry of Diagnostic Medical Sonography, American Registry of Radiological Technologists, Cardiovascular Credentialing International and Canadian Association of Registered Diagnostic Ultrasound Professionals. Contact the applicable registry for additional information / restrictions on their acceptance of ASRT CE credit.