About: http://webisa.webdatacommons.org/448494709

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	FIG. 2 is a graph of an expected change in the centroid frequency of an echo signal produced by a contrast agent when subjected to multiple ultrasound pulses; and
http://www.w3.org/ns/prov#wasQuotedFrom	google.com