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Table 2 Time-efficient noncontrast MRI protocol for urgent study of the female pelvis and non-cooperating patients

From: Cross-sectional imaging of acute gynaecologic disorders: CT and MRI findings with differential diagnosis—part I: corpus luteum and haemorrhagic ovarian cysts, genital causes of haemoperitoneum and adnexal torsion

MRI protocol

Axial T2W SSFSE

Sagittal T2W FRFSE

Oblique coronal/axial T2W FRFSE

Axial DWI SE EPI

Sagittal, oblique coronal/axial T1W 3D GRE LAVA

Repetition time/echo time (ms)

765/59

4675/100

4675/100

3000/74

4.4/2.1

Flip angle

90°

90°

90°

90°

12°

Section thickness (mm)

6

4

4

8

3.4

Interslice gap (mm)

0.6

0.4

0.4

2

−1.7

Bandwidth (kHz)

31.25

41.67

41.67

 

62.5

Field of view (cm)

38

32

32

42

40

Matrix

320 × 288

320 × 224

320 × 224

160 × 160

320 × 192

No. of averages

0.54

2

2

2

0.75

No. of images

30

26

26

15

104

Frequency direction

Right to left

Anterior to posterior

Right to left

Anterior to posterior

Superior to inferior

Acquisition time

24 s

2 min 15 s

2 min 15 s

27 s

22 s

b value (s/mm2)

0–800

  1. T2W T2-weighted, T1W T1-weighted, SSFSE single-shot fast spin-echo, FRFSE fast recovery fast spin-echo, DWI diffusion-weighted imaging, SE spin-echo, EPI echoplanar imaging, GRE gradient-echo, LAVA liver acquisition with volume acceleration