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 Indian J Med Microbiol  
 

Figure 3: Spectral Doppler waveform obtained from a STA (depicted as red color-filled lumen). The automatically calculated Doppler indices are also mentioned. PS – Peak systolic velocity, RI – Resistivity index, PI – Pulsatility index, AT – Acceleration time, ED – End diastolic velocity

Figure 3: Spectral Doppler waveform obtained from a STA (depicted as red color-filled lumen). The automatically calculated Doppler indices are also mentioned. PS – Peak systolic velocity, RI – Resistivity index, PI – Pulsatility index, AT – Acceleration time, ED – End diastolic velocity