| Autor: |
Frank J. H. Gijsen, W.J. van der Giessen, P. J. De Feyter, J.A.F. Oomen, C. J. Slager, Johan C.H. Schuurbiers, Rob Krams, Jolanda J. Wentzel, P. W. Serruys |
| Rok vydání: |
2003 |
| Předmět: |
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| Zdroj: |
Vascular Ultrasound ISBN: 9784431680031 |
| DOI: |
10.1007/978-4-431-67871-7_9 |
| Popis: |
Coronary contrast angiography is an extremely useful X-ray lumen imaging technique with high spatial and temporal resolution. By nature, its shadow imaging character permits visualization of a complete arterial branching system. Main restriction is that it provides only lumen information. Extending its use to biplane imaging allows reconstruction of 3-D location of points, 3-D shape of curves and with some approximation also 3-D reconstruction of the coronary lumen. Intravascular ultrasound imaging (IVUS) presents lumen and also wall information with even higher detail, but does so in a fragmented tomographic way. Simple 3-D reconstruction of an artery from IVUS, neglecting vessel curvature, is obtained by combining serial data, acquired during a controlled catheter pullback. Biplane imaging allows prediction of the true 3-D path passed by an IVUS catheter tip during pullback. Fusing IVUS data with this 3-D path allows true 3-D reconstruction of coronary lumen and wall (ANGUS). ANGUS imaging has opened tbe wide field of image based fluid mechanical modeling in the coronary arteries in the patient. With proper boundary conditions, the shear stress of the flowing blood induced on the endothelium can be calculated. Shear stress has a profound influence on vascular biology. Coronary artery wall data related to shear stress in patients are presented. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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