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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