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Table 1 MR imaging sequences and parameters from six scanners

From: MRI features predict microvascular invasion in intrahepatic cholangiocarcinoma

Parameter

T2WI-FS

T1W IP-OP

T1W-FS tra

T1W-FS cor

DWI

1.5-T UIHMR 560 scanner

 Repetition time (msec)

2693

115.8

4.4–4.5

4.4–4.5

2807

 Echo time (msec)

85.58

4.4 and 2.2

2.1–2.2

2.1–2.2

75.7

 Matrix size

201 × 288

230 × 288

192 × 256

125 × 256

115 × 128

 Field of view (mm2)

380 × 360

380 × 290

400 × 280

450X350

380 × 300

 Slice thickness (mm)

6

6

3.5

3

6

 Slice gap (mm)

1.2

1.2

0

0

1.2

 Average

1

1

1

1

4

3.0-T UIHMR770 MR

 Repetition time (msec)

2000

4.27

3.3

3.3

4165

 Echo time (msec)

106.2

2.5 and 1.21

1.5

1.5

66.3

 Matrix size

256 × 256

288 × 168

320 × 216

288 × 208

128 × 101

 Field of view (mm2)

346 × 346

300 × 300

270 × 270

340 × 340

300 × 300

 Slice thickness (mm)

6–7

3–4

3

3–4

6–7

 Slice gap (mm)

1.8–2.1

0

0

0

1.8–2.1

 Average

1

1

1

1

5

Avanto 1.5-T Siemens MR

 Repetition time (msec)

3000–3500

112

5.04

5.13

2400–2600

 Echo time (msec)

70–84

5.04 and 2.05

2.31

2.36

66

 Matrix size

256 × 173

256 × 134

256 × 125

288 × 187

128 × 112

 Field of view (mm2)

285 × 214–

308 × 380

285 × 214–

308 × 380

285 × 214–

308 × 380

350 × 350–

380 × 380

285 × 214–

308 × 380

 Slice thickness (mm)

5–7

5–7

3–4

5

5–7

 Slice gap (mm)

1–2.1

1–2.1

0

0

1–2.1

 Average

1

1

1

1

1

Aera 1.5 T Siemens MR

 Repetition time (msec)

3500

230

4.38

4.36

3200

 Echo time (msec)

84

2.38 and 4.76

1.93

2.03

56

 Matrix size

320 × 224

320 × 240

320 × 240

320 × 320

128 × 128

 Field of view (mm2)

380 × 308

380 × 278

380 × 297

350 × 350–380 × 380

380 × 308

 Slice thickness (mm)

5.5

5.5

3–4

3

5.5

 Slice gap (mm)

1.1

1.1

0

0

1.1

 Average

1

1

1

1

1

3.0-T GE750 MR

 Repetition time (msec)

4500

3.60

3.54

3.95

5454

 Echo time (msec)

88

2.23 and 1.12

1.67

1.84

49

 Matrix size

320 × 224-

448 × 448

212 × 170-

256 × 192

212 × 170-

256 × 192

384 × 170

130 × 96

 Field of view (mm2)

380 × 380–400 × 400

380 × 380–400 × 400

380 × 380–400 × 400

400 × 400–440 × 440

380 × 380–400 × 280

 Slice thickness (mm)

6.5

5

5

4

6.5

 Slice gap (mm)

1

1.1

0

0

1

 Average

2

0.70

1.33

0.70

1

Verio 3.0-T Siemens MRI

 Repetition time (msec)

2000–3000

207

4.17

4.07

3400

 Echo time (msec)

83

2.31 and 3.69

1.43

1.46

70

 Matrix size

320 × 165

256 × 141

352 × 200

384 × 269

128 × 80

 Field of view (mm2)

285 × 380–330 × 380

285 × 380–330 × 380

285 × 380–330 × 380

380 × 380

285 × 380–330 × 380

 Slice thickness (mm)

5.5

5.5

3

3

6

 Slice gap (mm)

1.1

1.1

0

0

1.8

 Average

1

1

1

1

4