o_1977r8vv9vk1ts2ms0kd8pksa.pdf

90 R. Chaoui, K.D. Kalache
Fig. 7.11. A dorsal view to the fetus in 3D showing the
spine and both kidneys. The progressive visualization of
power Doppler demonstrates the descending aorta (Ao)
and the bifurcation of both renal arteries. Ductus venosus
is connected directly to the IVC
Table 7.3. Renal anomalies amenable to 3D power Doppler
application
Agenesis of one or both kidneys
Horseshoe kidney
Pelvic kidney
Abnormal vessel course in dysplastic renal anomalies
approach enables the visualization of the pericallosal
artery with its ramifications (Fig. 7.13) [17]. By selecting
a lower velocity scale it is possible to obtain impressive
images of the cerebral veins and the sagittal sinus.
Conditions with possible benefit of 3D power
Doppler, such as vein of Galen aneurysm (Fig. 7.14)
and others, are listed in Table 7.4.
Intracranial Vessels
As with color Doppler two main vascular regions can
be examined in 3D mode depending on the insonation
plane. A transversal insonation allows easy reconstruction
of the circle of Willis (Fig. 7.12), whereas a sagittal
Fig. 7.13. Sagittal approach insonation of the brain enables
the demonstration of the pericallosal artery arising
from the anterior cerebral artery
3
Fig. 7.12. Circle of Willis as demonstrated with 3D PDU,
with the anterior (ACA), middle (MCA), and posterior (PCA)
cerebral arteries