Table 1 Imaging parameters of the conducted MRI scans.

From: The diagnostic performance of ss-EPI-DWI, rs-EPI-DWI (RESOLVE) and TGSE-BLADE-DWI in a model of retinal ischemia: a comparative phantom study

Parameter

ss-EPI-DWI

rs-EPI-DWI (RESOLVE)

TGSE-BLADE-DWI

MR acquisition type

Slice thickness (mm)

Number of slices

FOV (mm)

Matrix

TR (ms) / TE (ms)

b value (s/mm²)

Diffusion preparation

Voxel size (mm³)

Number of averages

Slice spacing

Readout segments

Echo spacing (ms)

EPI echo train length

Bandwidth (Hz/pixel)

Phase oversampling

Turbo factor

Fip angle

Diffusion mode

Encoding direction

BLADE coverage

Acceleration mode

2D

3

20

220 × 220

202 × 202

5800 / 85

0,1000

Sjetskal Tanner

0.5 × 0.5 × 3.0*

2 (b0), 12 (b1000)

10%

NA

0.96

76

1179

0%

NA

90° (excitation)

4-scan trace

A > > P

NA

GRAPPA

2D

3

20

220 × 220

202 × 202

10,270 / 60

0,1000

Sjektskal Tanner

0.5 × 0.5 × 3.0*

1

10%

7

0.34

11 (per segment)

688

0%

NA

180° (refocusing)

4-scan trace

A > > P

NA

GRAPPA

2D

3

20

220 × 220

192 × 192

4000 / 48

0,1000

Sjetskal Tanner

0.5 × 0.5 × 3.0*

1

10%

NA

8.14

NA

840

100%

11

150° (refocusing)

4-scan trace

A > > P

171.4%

GRAPPA

Acceleration factor

2

2

2

Readout partial Fourier

NA

6/8

NA

Phase partial Fourier

6/8

NA

NA

Acquisition time

5:09 min.

5:40 min.

5:28 min.

  1. To match acquisition time, the b-1000-weighted ss-EPI-DWI images were averaged 12 times. As no scanner-based interpolation algorithm was available to adjust the TGSE-BLADE-DWI voxel size to that of the EPI sequences, post-hoc interpolation was performed using a MATLAB algorithm. *Original voxel size for all sequences was 1.1 x 1.1 x 3 mm. TR and TE were automatically adjusted by the device’s Syngo system based on factors such as the number of slices, signal averaging, and distance factor. Consequently, the TR was not manually set to its minimum value, which primarily affects the total acquisition time.