Diagnostic ultrasound ( PDFDrive )

CHAPTER 28 Overview of Obstetric Imaging 1031
A
B
C
D E F
G H I
FIG. 28.16 Normal Fetal MRI: Representative T2-Weighted Images. (A) Sagittal view of fetal head with fetal body in coronal plane. (B)
Sagittal view of fetal head. Note normal appearance of corpus callosum and soft palate, with luid outlining the soft palate above the tongue. (C)
Coronal view of the brain, chest, and abdomen. Note normal appearance to the lungs, diaphragm, stomach, and kidneys. (D) Axial view of brain
with normal-appearing lateral ventricles. (E) Oblique axial view of brain shows normal cerebellar hemispheres and vermis. (F) Axial view at level
of globes. Note the dark lens in each globe. (G) Axial view at level of palate. Note that majority of the alveolar tooth-bearing ridge is well depicted.
(H) Axial view at level of stomach and gallbladder. Note spinal cord outlined by luid in thecal sac. (I) Axial view at level of bladder.
medical device. 42 Medically indicated obstetric imaging can easily
integrate making copies of key images for parents who want an
early view of their baby.
MAGNETIC RESONANCE IMAGING
Ultrasound is the screening modality of choice for fetal imaging.
However, when additional information regarding fetal anatomy
or pathology is needed, fast MRI is increasingly being used as
a correlative imaging modality in select cases (Fig. 28.16). MRI
is useful in these cases because it has no ionizing radiation,
provides excellent sot tissue contrast, has multiple planes for
reconstruction, and has a large ield of view, allowing for improved
depiction of many complex fetal abnormalities.
It is important to tailor the examination to answer speciic
questions raised either by patient history or by previous