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|a 10.1109/TVCG.2011.215
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|a eng
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|a van Pelt, Roy
|e verfasserin
|4 aut
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| 245 |
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|a Interactive virtual probing of 4D MRI blood-flow
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|c 2011
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|a Text
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|a ƒaComputermedien
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|a Date Completed 24.02.2012
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|a Date Revised 29.01.2022
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|a published: Print
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|a Citation Status MEDLINE
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|a © 2011 IEEE
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|a Better understanding of hemodynamics conceivably leads to improved diagnosis and prognosis of cardiovascular diseases. Therefore, an elaborate analysis of the blood-flow in heart and thoracic arteries is essential. Contemporary MRI techniques enable acquisition of quantitative time-resolved flow information, resulting in 4D velocity fields that capture the blood-flow behavior. Visual exploration of these fields provides comprehensive insight into the unsteady blood-flow behavior, and precedes a quantitative analysis of additional blood-flow parameters. The complete inspection requires accurate segmentation of anatomical structures, encompassing a time-consuming and hard-to-automate process, especially for malformed morphologies. We present a way to avoid the laborious segmentation process in case of qualitative inspection, by introducing an interactive virtual probe. This probe is positioned semi-automatically within the blood-flow field, and serves as a navigational object for visual exploration. The difficult task of determining position and orientation along the view-direction is automated by a fitting approach, aligning the probe with the orientations of the velocity field. The aligned probe provides an interactive seeding basis for various flow visualization approaches. We demonstrate illustration-inspired particles, integral lines and integral surfaces, conveying distinct characteristics of the unsteady blood-flow. Lastly, we present the results of an evaluation with domain experts, valuing the practical use of our probe and flow visualization techniques
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| 650 |
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|a Evaluation Study
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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| 700 |
1 |
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|a Bescós, Javier Oliván
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Breeuwer, Marcel
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Clough, Rachel E
|e verfasserin
|4 aut
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| 700 |
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|a Gröller, M Eduard
|e verfasserin
|4 aut
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| 700 |
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|a Romenij, Bart ter Haar
|e verfasserin
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| 700 |
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|a Vilanova, Anna
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on visualization and computer graphics
|d 1996
|g 17(2011), 12 vom: 01. Dez., Seite 2153-62
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