Åsmund Birkeland

Vessels and Blood Flow from Ultrasound

Vessel Extraction from UltrasoundUltrasound Painting of Vascular Tree [VMV2010]

Quickly extract 3D models live during examinationMinimize interactionUsing basic 2D B-mode ultrasound + tracking

Vessel Extraction from Ultrasound

ChallengesHoles in the surfaceSurface artifactsTracking calibrationMotion compensation

New Directions

New Vessel Geometry Implicit surfaces from points and tangents

SmoothHole-free

Cooperation with IMPA, Brazil

[Ives Macedo 2011]

New DataNew 4D ultrasound streaming (Dag Magne Ulvang)Volume registration (Ola Kristoffer Øye)

Live 3D Blood FlowInput: 3D vascular structure and Doppler dataIllustrative depiction of 3D flow on vessel geometryEnvironments

1. Flow phantom2. Carotid artery3. Hepatic/portal vascular

tree

Live 3D Blood Flow

Questions?