title: Development and applications of 4-D ultrasound (dynamic 3-D) in neurosonology.
abstract: The development and application of color-coded data in three-dimensional (3-D) reconstruction or four-dimensional (4-D) imaging (equal to dynamic 3-D) are demonstrated. In 4-D imaging, electrocardiography-triggered data acquisition of consecutive phases during the heart cycle are stored to form a multiphase 3-D data set. The option of color-coded data gives a new insight into such hemodynamic information. In the past, 3-D reconstructions were simple unicolor images, as in power mode, and the color-coded hemodynamic information was lost. These new options are presented here, along with color-coded data in examples of angiographically controlled pathologic results in extracranial and intracranial vessels.
authors.affiliation: Department of Neurology, University of Essen, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Delcker
authors.forename: M
authors.initials: M
authors.lastname: Schürks
authors.forename: H
authors.initials: H
authors.lastname: Polz
mesh_terms: D000368:Aged; D002339:Carotid Arteries / Q000000981:diagnostic imaging; D016893:Carotid Stenosis / Q000000981:diagnostic imaging*; D002539:Cerebral Arterial Diseases / Q000000981:diagnostic imaging*; D003251:Constriction, Pathologic; D004562:Electrocardiography; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D011859:Radiography; D014463:Ultrasonography