
Rev 1.1 VisualSonics Vevo 2100 Imaging System Operator Manual 391
Appendix A: Measurement package protocols
LCCA PI Left common carotid pulsatility index none
((Left Common Carotid PSV - (Left Common Carotid EDV)/
(Left Common Carotid VTI,Mean Velocity
RCCA RI Right common carotid resistive index none
(Right Common Carotid PSV - Right Common Carotid EDV)/
Right Common Carotid PSV
RCCA PI Right common carotid pulsatility index none
(Right Common Carotid PSV - Right Common Carotid EDV)/
Right Common Carotid VTI,Mean Velocity
LICA RI Left internal carotid resistive index none
(Left Internal Carotid PSV - Left Internal Carotid EDV)/ Left
Internal Carotid PSV
LICA PI Left internal carotid pulsatility index none
(Left Internal Carotid PSV - Left Internal Carotid EDV)/ Left
Internal Carotid VTI,Mean Velocity
LECA RI Left external carotid resistive index none
(Left External Carotid PSV - Left External Carotid EDV)/ Left
External Carotid PSV
LECA PI Left external carotid pulsatility index none
(Left External Carotid PSV - Left External Carotid EDV)/ Left
External Carotid VTI,Mean Velocity
RICA RI Right internal carotid resistive index none
(Right Internal Carotid PSV - Right Internal Carotid EDV)/
Right Internal Carotid PSV
RICA PI Right internal carotid pulsatility index none
(Right Internal Carotid PSV - Right Internal Carotid EDV)/
Right Internal Carotid VTI,Mean Velocity
RECA RI Right external carotid resistive index none
(Right External Carotid PSV - Right External Carotid EDV)/
Right External Carotid PSV
RECA PI Right external carotid pulsatility index none
(Right External Carotid PSV - Right External Carotid EDV)/
Right External Carotid VTI,Mean Velocity
Innominant and Subclavian Arteries protocol
Measurement definitions
Label Description Units Generic type Mode
IA PSV Innominant artery peak systolic velocity mm/s Velocity PW Doppler
IA EDV Innominant artery end diastolic velocity mm/s Velocity PW Doppler
IA Diam;s Innominant artery diameter, systole mm Linear B-Mode
IA Diam;d Innominant artery diameter, diastole mm Linear B-Mode
IA Diam;s Innominant artery diameter, systole mm Depth M-Mode
IA Diam;d Innominant artery diameter, diastole mm Depth M-Mode
IA VTI Innominant artery velocity time integral cm VTI PW Doppler
Peak Vel Innominant artery peak velocity mm/s VTI PW Doppler
Mean Vel Innominant artery mean velocity mm/s VTI PW Doppler
Peak Grad Innominant artery peak gradient mmHg VTI PW Doppler
Mean Grad Innominant artery mean gradient mmHg VTI PW Doppler
LSA PSV Left Subclavian artery peak systolic velocity mm/s Velocity PW Doppler
LSA EDV Left Subclavian artery end diastolic velocity mm/s Velocity PW Doppler
LSA Diam;s Left Subclavian artery diameter, systole mm Linear B-Mode
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