About: http://webisa.webdatacommons.org/163518008

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	Another method consistent with the present invention is a method of calculating an angle between a surgical instrument and a plane selected in an x-ray image.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk