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Table 1 Background velocity, flow, mean flow velocity, RI and PI for the renal arteries analysed with different methods of background phase correction

From: Inter-study reproducibility of interleaved spiral phase velocity mapping of renal artery haemodynamics

Background correction method

Background velocity (mm/s)

RABF per kidney (ml/min)

Mean velocity (mm/s)

Resistive index

Pulsatility index

None

0 +/− 0

413 +/− 122

253.5 +/− 65.2

0.71 +/− 0.06

1.47 +/− 0.29

Stationary phantom

−2.9 +/− 3.3**

417 +/− 119**

256.5 +/− 64.5**

0.71 +/− 0.06*

1.45 /- 0.29*

Background fit

−4.6 +/− 7.4*

420 +/− 124*

258.1 +/− 68.3*

0.70 +/− 0.06*

1.44 +/− 0.28*

  1. Data are from the initial scanning session (10 subjects × 2 acquisitions (left and right arteries) = 20 acquisitions in total) and are presented as mean +/− SD. (*p < .01, **p < .001 (compared to no background correction)).