
392 VisualSonics Vevo 2100 Imaging System Operator Manual Rev 1.1
Appendix A: Measurement package protocols
LSA Diam;d Left Subclavian artery diameter, diastole mm Linear B-Mode
LSA Diam;s Left Subclavian artery diameter, systole mm Depth M-Mode
LSA Diam;d Left Subclavian artery diameter, diastole mm Depth M-Mode
LSA VTI Left Subclavian artery velocity time integral cm VTI PW Doppler
Peak Vel Left Subclavian artery peak velocity mm/s VTI PW Doppler
Mean Vel Left Subclavian artery mean velocity mm/s VTI PW Doppler
Peak Grad Left Subclavian artery peak gradient mmHg VTI PW Doppler
Mean Grad Left Subclavian artery mean gradient mmHg VTI PW Doppler
RSA PSV Right Subclavian artery peak systolic velocity mm/s Velocity PW Doppler
RSA EDV Right Subclavian artery end diastolic velo mm/s Velocity PW Doppler
RSA Diam;s Right Subclavian artery diameter, systolecity mm Linear B-Mode
RSA Diam;d Right Subclavian artery diameter, diastole mm Linear B-Mode
RSA Diam;s Right Subclavian artery diameter, systole mm Depth M-Mode
RSA Diam;d Right Subclavian artery diameter, diastole mm Depth M-Mode
RSA VTI Right Subclavian artery velocity time integral cm VTI PW Doppler
Peak Vel Right Subclavian artery peak velocity mm/s VTI PW Doppler
Mean Vel Right Subclavian artery mean velocity mm/s VTI PW Doppler
Peak Grad Right Subclavian artery peak gradient mmHg VTI PW Doppler
Mean Grad Mean gradient mmHg VTI PW Doppler
Calculation definitions
Name Description Units Formula
IA RI Innominant artery resistive index none
(Innominant Artery PSV - Innominant Artery EDV)/ Innominant
Artery PSV
IA PI Innominant artery pulsatility index none
(Innominant Artery PSV - Innominant Artery EDV)/ Innominant
Artery VTI, Mean Velocity
LSA RI Left subclavian artery resistive index none
(Left Subclavian Artery PSV - Left Subclavian Artery EDV)/ Left
Subclavian Artery PSV
LSA PI Left subclavian artery pulsatility index none
(Left Subclavian Artery PSV - Left Subclavian Artery EDV)/ Left
Subclavian Artery VTI, Mean Velocity
RSA RI Right subclavian artery resistive index none
(Right Subclavian Artery PSV - Right Subclavian Artery EDV)/
Right Subclavian Artery PSV
RSA PI Right subclavian artery pulsatility index none
(Right Subclavian Artery PSV - Right Subclavian Artery EDV)/
Right Subclavian Artery VTI, Mean Velocity
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