MR of Fetal Abdomen and Pelvis
Fig. 11.1 Normal fetal abdominal and pelvic anatomy. Fetus at 32 weeks’ gestation. (a) Coronal and (b) sagittal T2-weighted and corresponding (c) coronal and (d) sagittal T1-weighted images. Stomach (long…
Management and Surgery of Abnormal Invasive Placenta: Impact of MR Imaging
MRI equipment Picker 1.5 edgepicker 1.5 edge Siemens Espree 1.5 T GE 3 T signa HDxt Philips Achieva 1.5 T Sequences FSE Haste ss-FSE3 ssh-TSE4 TR 3500 850 2399 712…
MR of Obstetric Diseases in Pregnancy
Fig. 19.1 Placental abruption. Axial T1-weighted (a) and T2-weighted (b) MR images show linear low T2-weighted signal intensity signal in the retroplacental region, with corresponding mild increased T1 signal (arrows)…
MRI of Appendicitis and Bowel Diseases in Pregnancy
T2-weighted imaging T1-weighted imaging Parameter Half-Fourier single-shot FSE Half-Fourier single-shot FSE with fat suppression Diffusion-weighted imaging b800 2D dual-echo GRE 2D time of flight Planes Axial, coronal, sagittal Axial…
MRI of Fetal Spine and Extremities
Spinal dysraphism Myelomeningocele/myeloschisis Lipomyelomeningocele Meningocele Split cord malformation or diastematomyelia Terminal myelocystocele Caudal regression syndrome Segmental spinal dysgenesis Congenital spinal neoplasms such as teratoma, dermoid/epidermoid, hamartomas Complex syndromes/constellation of anomalies…
Magnetic Resonance of Renal Disease in Pregnancy
Fig. 22.1 An intravenous urogram from the archives showing the dilated right ureter tapering as it passes between the pelvic brim and the gravid uterus The hormonal theory is that…
MRI of the Placenta
Fig. 13.1 Uterine contraction in a 27-year-old at 6 weeks gestation referred for abdominopelvic MRI. Coronal (a) and axial (b) T2-weighted images demonstrate the early intrauterine pregnancy. No embryonic parts…
Fetal Cardiovascular Magnetic Resonance
Fig. 10.1 Metric optimized gating. A synthetic trigger with longer R-R interval is used to acquire the k-space data. Hypothetic trigger locations are then retrospectively applied to the data and…
MRI of the Fetal Chest
Fig. 9.1 (a) Coronal SSFSE T2w image of a fetal chest at 24 weeks gestation with intermediate signal lung parenchyma. Note the fluid-filled trachea and bronchi (b). Coronal SSFSE T2w…
MRI of the Fetal Head and Neck
Fig. 7.1 Macrocephaly. (a, b) Sagittal and coronal T2 single-shot haste (SSH) MR images demonstrate an enlarged head secondary to a large left-sided extra-axial hematoma (white arrows) Fig. 7.2 CLOVES…
