Exploring hemodynamics by raycasting 4D MRI flow

R.F.P. Pelt, van, J. Oliván Bescós, M. Breeuwer, M.E. Gröller, B.M. Haar Romeny, ter, A. Vilanova

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Flow sensitive phase-contrast magnetic resonanceimaging sequences produce three-dimensional velocityfields in time, providing quantitative information ofblood flow dynamics. Thorough understanding of thehemodynamic behavior will support physicians to diagnose and assess risk of various cardiovascular diseases. However, inspection of the complex cine flowdata, encompassing both morphology and function,is generally a troublesome and tedious task. Overthe last few decades, the field of scientific flow visualization has introduced a multitude of techniques to explore unsteady velocity fields, in order to capture and depict flow characteristics. Inspired by concepts from ultrasound imaging, we have investigated raycasting as a means to explore and visualize direction and magnitude of blood velocities, striving to reveal the blood flow behavior. In particular, we aim to depict flow patterns that deviate from the expected blood flow. For that purpose, several interaction techniques have been incorporated into the presented framework. Angles between a user-defined direction, set by an interaction widget, and the velocity field are mapped to different visual cues using a transfer function. Furthermore, we define the prevalent flow as approximate of the expected blood flow, generated based on the vessel centerline. We visualize a projection of the angles between the prevalent flow and the velocity field.
Original languageEnglish
Title of host publicationProceedings of the Sixteenth Annual Conference of the Advanced School for Computing and Imaging, Veldhoven, The Netherlands, 1-3 November 2010
EditorsT. Kielmann, M.J. van Kreveld, W.J. Niessen
Number of pages8
Publication statusPublished - 2010
Event16th Annual Conference of the Advanced School for Computing and Imaging (ASCI 2010), June 1-3, 2010, Veldhoven, The Netherlands - Veldhoven, Netherlands
Duration: 1 Jun 20103 Jun 2010

Conference

Conference16th Annual Conference of the Advanced School for Computing and Imaging (ASCI 2010), June 1-3, 2010, Veldhoven, The Netherlands
Abbreviated titleASCI 2010
Country/TerritoryNetherlands
CityVeldhoven
Period1/06/103/06/10

Fingerprint

Dive into the research topics of 'Exploring hemodynamics by raycasting 4D MRI flow'. Together they form a unique fingerprint.

Cite this