Ultrasound
last authored:
last reviewed:
Introduction
Ultrasound uses high frequency waves which are reflected at interfaces between adjacent tissues. Time measured between emission and receiving is used to calculate distance.
2-D slices of tissue are thus generated.
Uses
of limited use in the brain due to the skull.
can be used in infants (with their softer skulls) or also on the carotid to look for stenosis (with doppler)
Kidneys are normally small with chronic disease. Diabetes, amyloid, myeloma, HIV can cause kidney failure with normal sized kidneys.
Pelvic ultrasound can provide valuable imaging of the genital tract, particularly to differentiate cystic, benign, and malignant structures. It can be done transvaginally or transabdominally through a full bladder.
Risks
Mechanism of Action
Additional Resources
 |