three-dimensional echocardiography
type: Concept
narrower: four-dimensional echocardiography
broader: three-dimensional imaging
broader: echocardiography

four-dimensional echocardiography
type: Concept
broader: three-dimensional echocardiography

three-dimensional imaging
type: Concept
narrower: three-dimensional echocardiography

echocardiography
type: Concept
narrower: three-dimensional echocardiography

concepts
type: Collection
type: ConceptGroup
member: three-dimensional echocardiography