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Table 3 Mean values of Doppler indexes obtained with non-enhanced or enhanced with PESDA ultrassonography in the proximal portion of renal arteries

From: The contrast-enhanced Doppler ultrasound with perfluorocarbon exposed sonicated albumin does not improve the diagnosis of renal artery stenosis compared with angiography

 

Non-enhanced

Enhanced

p

 

Arteries without stenosis n = 37

Arteries with stenosis n = 23

Arteries without stenosis n = 37

Arteries with stenosis n = 23

Stenosis vs no stenosis

Enhanced vs no enhanced

PSV (cm/s)

1,56 ± 0,79

2,12+/-1,22

1,68+/-0,86

2,01+/-1,27

0,059

0,973

PDV (cm/s)

0,36+/-0,22

0,38+/-0,31

0,33+/-0,21

0,38+/-0,36

0,589

0,618

RAR

1,54+/-0,84

2,16+/-1,25

1,30+/-0,60

1,98+/-1,36

0,008

0,103

RI

0,76+/-0,11

0,83+/-0,11

0,78+/-0,13

0,76+/-0,26

0,193

0,793

PI

1,74+/-0,68

2,31+/-0,91

2,06+/-1,01

2,05+/-1,07

0,526

0,375

  1. PSV: peak systolic velocity; PDV: peak diastolic velocity; RAA: renal/aortic ratio RI: resistance index; PI: pulsatility index; US = ultrasonography