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Table 1 Typical imaging parameters at 1.0 Tesla and 1.5 Tesla

From: Use of a 1.0 Tesla open scanner for evaluation of pediatric and congenital heart disease: a retrospective cohort study

 

1.0 Tesla

1.5 Tesla

Cine SSFP

  

TR (ms)/TE (ms)

4.1-4.4/2.0-2.2

3.1-3.3/1.6

Flip angle (°)

55-60

60

Receive bandwidth (Hz/pixel)

578 or 1014

954

In-plane spatial resolution (mm)

1.9-2.0

1.7-1.9

Slice thickness (mm)

8

8

Phases per cardiac cycle

24-30

30

SENSE

1

2

SAR*

<74-92%

<95%

Black blood

  

In-plane spatial resolution (mm)

1.6-1.7

1.2-1.5

Slice thickness (mm)

5-7

4-5

Number of signals averaged

1-2

1

SENSE

1

2

SAR (for proton density)

<34%

<15%

Phase contrast

  

TR (ms)/TE (ms)

6.5-6.9/4.1-4.7

3.1-3.3/1.6

Flip angle (°)

12-25

12

Receive bandwidth (Hz/pixel)

318-364

717

In-plane spatial resolution (mm)

2.0-2.2

1.6-1.8

Slice thickness (mm)

6

6

Phases per cardiac cycle

20-40

40

Number of signals averaged

2-3

3

SENSE

1

2

SAR

<2%

<2%

Magnetic resonance angiogram

  

TR (ms)/TE (ms)

4.0/1.5

4.8/1.5

Flip angle (°)

40

40

Receive bandwidth (Hz/pixel)

482 or 789

249

In-plane spatial resolution (mm)

1.8-2.2

1.7-1.8

Slice thickness (mm)

3.0-3.4

2.6-2.8

SENSE

1

1.5 AP, 1.5 LR

SAR

<82-92%

<51%

3-dimensional SSFP

  

TR (ms)/TE (ms)

5.1-5.5/2.6-2.8

4.3/2.2

Flip angle (°)

90

90

Receive bandwidth (Hz/pixel)

578

618

Isotropic voxel size (mm)

1.9-2.6

1.6

SENSE

1

1.5 AP, 1.5 LR

SAR

<62%

<36%

LGE

  

TR (ms)

6.0

6.1

TE (ms)

3.0

3.0

Flip angle (°)

25

25

Receive bandwidth (Hz/pixel)

299 or 495

232

In-plane spatial resolution (mm)

2.0-2.2

1.7-1.8

Slice thickness (mm)

8

8

SENSE

1

1

SAR

<10%

<8%

3-dimensional LGE

  

TR (ms)/TE (ms)

5.3/2.6

Not performed

Flip angle (°)

25

 

Receive bandwidth (Hz/pixel)

299

 

In-plane spatial resolution (mm)

1.9

 

Slice thickness (mm)

5

 

SAR

<17%

 
  1. SSFP, balanced steady-state free precession; TR, repetition time; TE echo time; SENSE, sensitivity encoding; SAR, systemic absorption rate; LGE, late gadolinium enhancement
  2. *SAR measurements are based on level 0 (normal operating mode) with whole body SAR < 2 W/kg