A three-dimensional model for arterial tree representation, generated by constrained constructive optimization

Karch, Rudolf; Neumann, Friederike; Neumann, Martin; Schreiner, Wolfgang

doi:10.1016/s0010-4825(98)00045-6

Cited by 124 publications

(169 citation statements)

References 32 publications

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“…3D functional models have been presented in [1,13]. The model [1] was extended to allow infusion of CM and its propagation from the main supplying vessels (hepatic artery, portal vein) to the output hepatic vein, through the parenchyma.…”

Section: State Of the Artmentioning

confidence: 99%

Hepatic tumor enhancement in computed tomography: combined models of liver perfusion and dynamic imaging

Bézy-Wendling

Krȩtowski

Rolland

2003

Computers in Biology and Medicine

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The objective of this study is to show how computational modeling can be used to increase our understanding of liver enhancement in dynamic computer tomography. It relies on two models: (1) a vascular model, based on physiological rules, is used to generate the 3D hepatic vascular network; (2) the physical process of CT acquisition allows to synthesize timed-stamped series of images, aimed at tracking the propagation of a contrast material through the vessel network and the parenchyma. The coupled models are used to simulate the enhancement of a hyper-vascular tumor at di erent acquisition times, showing a maximum conspicuity during the arterial phase. ?

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Section: State Of the Artmentioning

confidence: 99%

Hepatic tumor enhancement in computed tomography: combined models of liver perfusion and dynamic imaging

Bézy-Wendling

Krȩtowski

Rolland

2003

Computers in Biology and Medicine

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“…This approximation allows the computational complexity to be significantly reduced leading to the simulation of complex trees in a very short time. Another approach was presented by Karch et al [4], where all vessel parameters are recomputed during the optimization of a single bifurcation.…”

Section: Vascular Tree Optimizationmentioning

confidence: 99%

“…When the updating strategy is used this time is reduced by 40% and the fast updating procedure leads to a three times faster optimization. In comparison, in [4] the computing time for a tree with 4000 macro-cells is approximately 10 h on a DEC-Alpha 21164/333 MHz, to get similar vascular trees. The main concepts of the model presented in [3] and the extension described here are close to those reported in [4].…”

Section: Application To the Liver Arterial Treementioning

confidence: 99%

“…These models allow structural and functional features to be changed and pathological vascular modifications to be rendered. They range from the early 2-D models [2] to more recent surface-based ones [1] or to fully 3-D models [3,4] with different objectives such as realistic representations for rendering applications [1], physiological interpretation [3] or organ-based descriptions like coronary arterial trees [4,5]. The present contribution is a continuation of the work described in [6].…”

Section: Introductionmentioning

confidence: 99%

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Fast algorithm for 3-D vascular tree modeling

Krȩtowski

Rolland

Bézy-Wendling

et al. 2003

Computer Methods and Programs in Biomedicine

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In this short paper, accelerated three-dimensional computer simulations of vascular trees development, preserving physiological and haemodynamic features, are reported. The new computation schemes deal: (i) with the geometrical optimization of each newly created bifurcation; and (ii) with the recalculation of blood pressures and radii of vessels in the whole tree. A significant decrease of the computation time is obtained by replacing the global optimization by the fast updating algorithm allowing more complex structure to be simulated. A comparison between the new algorithms and the previous one is illustrated through the hepatic arterial tree.

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“…When generating the coronary artery tree special care has to be paid to the realism, in particular the irregularity, and biological constraints. If procedural model generation is used it could be based on the work of Karch et al [18] with the addition of biological constraints. The latter address the fact that three main coronary arteries -the left anterior descendant artery and the left circumflex artery on the left side and the right coronary artery on the right side -supply all regions of the heart.…”

Section: Use-case Scenariosmentioning

confidence: 99%

Virtual coronary cineangiography

Bajec

Trunk

Oseli

et al. 2003

Computers in Biology and Medicine

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The mastering of myocardial infarction diagnosis is traditionally composed of laborious trial-and error-based examination of canonical coronary cineangiographies. In the following article we suggest a system that enables the instructor to generate student-specific cases, thus allowing teaching not only the basic feature searching and stenosis evaluation processes, but also the importance of the correct acquisition viewpoint. With the proposal of the development of the Digital Cardiologist intelligent agent we also envisage the possibility of the student's self tutoring.

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A three-dimensional model for arterial tree representation, generated by constrained constructive optimization

Cited by 124 publications

References 32 publications

Hepatic tumor enhancement in computed tomography: combined models of liver perfusion and dynamic imaging

Hepatic tumor enhancement in computed tomography: combined models of liver perfusion and dynamic imaging

Fast algorithm for 3-D vascular tree modeling

Virtual coronary cineangiography

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