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Table 1 Lab standard for 4D flow and 2D phase contrast (2D-PC) flow acquisitions

From: Impact of ferumoxytol vs gadolinium on 4D flow cardiovascular magnetic resonance measurements in small children with congenital heart disease

 

4D flow sequence

2D-PC flow sequence

Arterial

Venous

Resolution (mm)

1.3

1.8

0.6

0.6

Field of view (mm)

200

280

240

240

iPAT acceleration factor

2

2

2

2

Views per segmenta

2–3

2–3

2–3

2–3

Matrix

72 × 160

72 × 160

192 × 192

192 × 192

Echo time (ms)

2.37–2.55

2.15–2.28

3.73

3.73

Temporal resolution (ms)

39.3–82.1

37.7–58.1

38.6

38.6

VENC (cm/s)

 Great vessels

150–400

 

150–350

 

 Branch pulmonary arteries

150–400

 

100–400

 

 Systemic veins

150–375

 

75–150

 

 Pulmonary veins

150–375

 

75–120

 
  1. Lab standard parameters for 4D flow performed at either 1.3 mm or 1.8 mm isotropic voxels and 2D-PC flow performed in arterial or venous structures
  2. VENC velocity encoding
  3. aNumber of segments was 2 for RR interval < 750 ms and 3 for RR interval > 750 ms