About: http://webisa.webdatacommons.org/166035117

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	The cursor or sample volume is placed on the 2-D image over the tissue of interest and the Doppler waveforms are acquired.
http://www.w3.org/ns/prov#wasQuotedFrom	criticalecho.com