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<http://webisa.webdatacommons.org/171533173>	<http://www.w3.org/ns/prov#value>	"Why the test is performedThis test is done as an alternative to arteriography and venography." .
<http://webisa.webdatacommons.org/171533173>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<carolinashealthcare.org> .
<http://webisa.webdatacommons.org/prov/355678811>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/171533173> .