radiographic image enhancement
type: Concept
narrower: digital subtraction angiography

subtraction technique
type: Concept
narrower: digital subtraction angiography

angiography
type: Concept
narrower: digital subtraction angiography

concepts
type: Collection
type: ConceptGroup
member: digital subtraction angiography

digital subtraction angiography
broader: subtraction technique
broader: radiographic image enhancement
broader: angiography
type: Concept