The morphologic risk factors for carotid atherosclerotic plaque include plaque surface ulceration, thrombosis, lumen surface irregularity, intraplaque hemorrhage, nonhyperechoic plaque, hypoechogenic or predominantly hypoechogenic plaque, echolucent
plaque, complex plaque, stenoses grade ≥70%, early- and end-stage calcifications, gray-scale median score in imaging of plaque echogenicity, plaque lipid core presence, lipid-rich plaque, intima-media thickness (IMT), and plaque score.
carotid artery plaques are associated with elevated levels of fasting and postprandial triglyceride-rich lipoproteins.
Benign nodules are commonly well defined (96% benign), entirely cystic, solid and cystic or may be solid, demonstrate coarse calcification, have thin echolucent
halo around the entire lesion and may show spongiform appearance3,4.
Positive Bilateral extensive frontoparietal well-circumscribed hyperechogenicity with areas of echolucent
breakdown Case 3 7 days Bilateral frontoparietal GA 31 wks CUS on day 7 parenchymal hyperechogenicity BW 1 370 g with areas of echolucent
cystic Negative breakdown.
Lipid rich plaques poorly reflect emitted ultrasound and appear echolucent
(Dark) and heterogeneous on ultrasound images.
5cm) (Figure 2) with echolucent
center ("beard-beak sign of recent and growing thrombus") , protruding to LA during systole (Figure 3), few thin thoracic aorta plaques.
Highly chlorinated PCBs (congeners 194, 206, and 209) were associated with an echolucent
Ultrasound examination was performed during the first, third, fifth, seventh, ninth and eleventh week, which showed echolucent
area followed by hyperechoic spicules in a echolucent
window and increasing echogenic material in distraction gap respectively.
The procedure determines the presence of blood clots or echolucent
plaque, which contains a high level of fat.
After a vascular review, arterial duplex of the right lower limbs showed 70% stenosis at the origin of the right superficial femoral artery with a 3-cm long echolucent
Although the mass has relatively homogeneous structure some parts of mass has increased echogenicity, some parts of mass has echolucent
area, which were concordant with calcification and hemorrhage, respectively.
The focal necrotic lesions become echolucent
and with time collapse.