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## Project-Team Asclepios Analysis and Simulation of Biomedical Images

### Citations

1012 | publications by the team in recent years - Major |

793 | Statistical Shape Analysis.
- Dryden, Mardia
- 1998
(Show Context)
Citation Context ...oblem (cf. the remarkable book "On Shape and Growth" by D’Arcy Thompson [144]). Significant efforts have been made since that time to develop a theory for statistical shape analysis (one can refer to =-=[117]-=- for a good synthesis, and to the special issue of Neuroimage [143] for recent developments). Despite all these efforts, there is a number of challenging mathematical issues which remain largely unsol... |

286 | A Riemannian Framework for Tensor Computing.
- Pennec, Fillard, et al.
- 2006
(Show Context)
Citation Context ...nitialized on tensor based morphometry. The goal is to perform statistics on the Cauchy-Green Tensor of deformations between subjects [128] using the log-Euclidean [33] or the affine invariant metric =-=[50]-=- and to reuse these statistics as a regularization criterion for non-linear image registration [86]. A working meeting between X. Pennec, N. Lepore and C. Brun (PhD student at UCLA) was held on this s... |

217 | Log-euclidean metrics for fast and simple calculus on diffusion tensors. Magnetic Resonance in Medicine
- Arsigny, Pennec, et al.
- 2006
(Show Context)
Citation Context ...n processing algorithm particularly simple to recycle. Two journal articles have been published this year on this topic: [33] on the theoretical aspects of the Log-Euclidean framework for tensors and =-=[34]-=- for its application to diffusion tensor processing. Figure 11. Regularization of a clinical 3D DTI volume. Left: close-up on the top right ventricle and nearby. Middle Left: Euclidean regularization.... |

201 | Probabilities and statistics on riemannian manifolds: Basic tools for geometric measurements - Pennec - 1999 |

134 | General object reconstruction based on simplex meshes. - Delingette - 1999 |

128 | Medical image analysis: Progress over two decades and the challenges ahead. - Duncan, Ayache - 2000 |

111 |
Three-Dimensional Modeling for Functional Analysis of Cardiac Images: A Review
- Frangi, Niessen, et al.
(Show Context)
Citation Context ...ite matter, grey matter, and cerebrospinal fluid [146], or to measure some functional properties of the heart from dynamic sequences of Magnetic Resonance [112], Ultrasound or Nuclear Medicine images =-=[120]-=-. Despite these advances and successes, one can notice that statistical models of the anatomy are still very crude, resulting in poor registration results in deformable regions of the body, or between... |

107 |
Geometric means in a novel vector space structure on symmetric positive definite matrices.
- Arsigny, Fillard, et al.
- 2007
(Show Context)
Citation Context ...e been transformed into their matrix logarithms, which makes classical Euclidean processing algorithm particularly simple to recycle. Two journal articles have been published this year on this topic: =-=[33]-=- on the theoretical aspects of the Log-Euclidean framework for tensors and [34] for its application to diffusion tensor processing. Figure 11. Regularization of a clinical 3D DTI volume. Left: close-u... |

100 | N.: A Log-Euclidean Framework for Statistics on Diffeomorphisms.
- Arsigny, Commowick, et al.
- 2006
(Show Context)
Citation Context ...ions. In this framework, usual Euclidean statistics can be performed on diffeomorphisms via their logarithms, with excellent mathematical properties like inversioninvariance. In MICCAI’06 and MFCA’06 =-=[58]-=-, [60], we presented two efficient algorithms to compute numerically logarithms of diffeomorphisms and exponentials of vector fields, whose accuracy is studied on synthetic data. Moreover we successfu... |

90 | Unifying maximum likelihood approaches in medical image registration, - Roche, Malandain, et al. - 2000 |

83 | Flexible and efficient workflow deployement of data-intensive applications on grids with MOTEUR, - Glatard, Montagnat, et al. - 2008 |

76 | Clinical DT-MRI estimation, smoothing and fiber tracking with Log-Euclidean metrics. In:
- Fillard, Arsigny, et al.
- 2006
(Show Context)
Citation Context ...regularization term. We showed that this can correct for sides effect caused by the Rician noise: tensors tend to be smaller than normal. This work has been accepted for publication at ISBI this year =-=[71]-=-. An extended version, with a detailed quantitative analysis of 7 algorithms to estimate and regularize DT-MRI is currently submitted. 5.4.2. A statistical atlas of the cardiac fiber architecture Keyw... |

76 | A Simple Two-Variable Model of Cardiac Excitation,
- Aliev, Panfilov
- 1996
(Show Context)
Citation Context ...ng to high computational costs and the manual tuning of a very large set of parameters. In our approach, we rather selected a model involving a limited number of parameters, based on Aliev & Panfilov =-=[109]-=-. Thus allowing the identification of the model parameters from clinical measurements on a specific patient by solving the inverse problem. It is well known that muscle fiber orientations vary across ... |

70 | A Review of Deformable Surfaces: Topology, Geometry and Deformation - Montagnat, Delingette, et al. - 2001 |

67 | Rigid registration of 3D ultrasound with MR images : a new approach combining intensity and gradient information - Roche, Pennec, et al. - 2001 |

62 | Iconic feature based nonrigid registration: the PASHA algorithm. - Cachier, Bardinet, et al. - 2003 |

57 | Automatic detection and segmentation of evolving processes in 3D medical images: Application to multiple sclerosis. - Rey, Subsol, et al. - 2002 |

56 |
Spreading of excitation in 3–D models of the anisotropic cardiac tissue I: Validation of the eikonal model
- Colli-Franzone, Guerri
- 1993
(Show Context)
Citation Context ...tor its therapy. Quite advanced models have already been proposed to study at the molecular, cellular and organic level a number of physiological systems (see for instance [136], [127], [115], [138], =-=[121]-=-). While these models and new ones need to be developed, refined or validated, a grand challenge that we want to address in this project is the automatic adaptation of the model to a given patient by ... |

54 | Nonlinear anisotropic elasticity for real-time surgery simulation, - Picinbono, Delingette, et al. - 2003 |

52 | H.: 4D deformable models with temporal constraints: application to 4D cardiac image segmentation. Medical Image Analysis 9 - Montagnat, Delingette - 2005 |

47 | Landmark-based registration using features identied through differential geometry - Pennec, Ayache, et al. - 2000 |

45 | An Electromechanical Model of the Heart for Image Analysis and Simulation. PhD Thesis. INRIA Sophia Antipolis. - Sermesant - 2003 |

38 |
Cardiac function estimation from MRI using a heart model and data assimilation: Advances and difficulties
- Sermesant, Moireau, et al.
- 2006
(Show Context)
Citation Context ...ble to regularize the segmentation process in a physiological way. But such models can also be used to estimate hidden parameters of the cardiac function from clinical data, through data assimilation =-=[55]-=-. Such parameters give a much more interesting information for diagnosis, as they really represent the underlying physiology. Figure 21. Segmentation of the left heart (in red) and the right heart (in... |

37 |
Imaging cerebral atrophy: normal ageing to Alzheimer's disease.
- Fox, Schott
- 2004
(Show Context)
Citation Context ...nt imaging modalities (e.g. anatomical and functional), or to track the evolution of a pathology through the automated registration and comparison of a series of images taken at distant time instants =-=[119]-=-, [142]. It is also possible to obtain from a Magnetic Resonance Image (MRI) of the head a reasonable segmentation into skull tissues, white matter, grey matter, and cerebrospinal fluid [146], or to m... |

32 | Measuring brain variability by extrapolating sparse tensor fields measured on sulcal lines. Neuroimage
- Fillard, Arsigny, et al.
- 2006
(Show Context)
Citation Context ... population means. This allows to provide a common reference for comparing variability tensors of the two populations, without creating a bias towards one population. This work appeared in Neuroimage =-=[42]-=-, and in a research report [93]. We are now applying this methodology to the mapping and understanding of gender differences (males vs. females) (see Fig. 13), pathologies (Williams syndrome), and hem... |

31 | Deformable biomechanical models: Application to 4D cardiac image analysis - Sermesant, Forest, et al. - 2003 |

31 |
Robust mosaicing with correction of motion distortions and tissue deformations for in vivo fibered microscopy. Med Image Anal
- Vercauteren, Perchant, et al.
- 2006
(Show Context)
Citation Context ...ville, Rouen University Hospital, France. In 2005, we proposed an algorithm using image sequence mosaicing techniques to widen the field of view (FOV) and enhance the possibilities offered by FCM. In =-=[57]-=-, [61], we further developed this algorithm to compensate for the motion distortions arising from the laser scanning. In the field of biomedical imaging, the issue of validation for image processing t... |

30 | Performance evaluation of grid-enabled registration algorithms using bronze-standards
- Glatard, Pennec, et al.
- 2006
(Show Context)
Citation Context ...transformations, including image artifacts, high deformations in the tumor area and tilts in the image acquisition. The four studied algorithms exhibited similar sub-voxelic accuracy on this database =-=[78]-=-, [76]. Because of its computing and data intensive nature, the bronze standard application benefits from a grid implementation which facilitates algorithm and data sharing and provides computing powe... |

30 | Polyrigid and Polyaffine Transformations: A Novel Geometrical Tool to Deal with Non-rigid Deformations Application to the Registration of Histological Slices.
- Arsigny, Pennec, et al.
- 2005
(Show Context)
Citation Context ...exible, this tool can be readily adapted to a large variety of situations, simply by tuning the number of rigid or affine components and the number of parameters describing their regions of influence =-=[111]-=-. This year, we presented a novel framework, called Log-Euclidean polyaffine, which drastically simplifies our previous framework and guarantees strong invariance properties. In particular, the invers... |

29 | Modelbased detection of tubular structures - Krissian, Malandain, et al. - 2000 |

25 | Reconstruction of coronary arteries from a single rotational x-ray projection sequence. - Blondel, Malandain, et al. - 2006 |

25 | Piecewise affine registration of biological images for volume reconstruction, - Pitiot, Bardinet, et al. - 2006 |

22 | Probabilistic and dynamic optimization of job partitioning on a grid infrastructure
- Glatard, Montagnat, et al.
- 2006
(Show Context)
Citation Context ...reases, thus highlighting the need for a large-scale grid. Thus, we investigated methods to reduce the impact of the overhead on production grids. In particular, job grouping [73] and job granularity =-=[77]-=- aim at lowering the number of jobs submitted by the application to reduce the probability for a job to face a high overhead. They are based on a trade-off between the reduction of the number of submi... |

22 | Optimizing jobs timeouts on clusters and production grids
- Glatard, Montagnat, et al.
- 2007
(Show Context)
Citation Context ...hem when it expires. We noticed that setting a timeout only speeds up the execution when the tail of the distribution of the grid overhead is sufficiently heavy and when failures impact the execution =-=[95]-=-. Those strategies were shown to provide a significant speed-up on the execution time and larger scale experiments on the bronze standard application are thus made possible. 5.6.2. Log-Euclidean DTI a... |

21 | Processing data in Lie Groups: An algebraic approach. Application to non-linear registration and diffusion tensor MRI. - Arsigny - 2006 |

20 | S.: Non-rigid alignment of preoperative MRI, fMRI, and DT-MRI with intra-operative MRI for enhanced visualization and navigation in image-guided neurosurgery. - Archip, Clatz, et al. - 2007 |

19 | A novel three-dimensional computer-assisted method for a quantitative study of microvascular networks of the human cerebral cortex. Microcirculation - Cassot, Lauwers, et al. - 2006 |

19 | AYACHE N.: A log-Euclidean polyaffine framework for locally rigid or affine registration. proc. of WBIR
- ARSIGNY, COMMOWICK, et al.
- 2006
(Show Context)
Citation Context ... on regular grids. Details about the theory and the efficient numerical algorithms are available in [91]. Results were presented at the international workshop of Biomedical image Registration WBIR’06 =-=[59]-=-, and used to design efficient nonlinear registration algorithms such as [69] (see also Section 5.2.3). 6 4 2 0 −2 −4 −6 −6 −4 −2 0 2 4 6 6 4 2 0 −2 −4 −6 −6 −4 −2 0 2 4 6 6 4 2 0 −2 −4 −6 −6 −4 −2 0 ... |

18 | Fusion of autoradiographs with an MR volume using 2-d and 3-d linear transformations - Malandain, Bardinet, et al. - 2004 |

16 |
Bi-invariant means in Lie groups. Application to left-invariant polyaffine transformations,” INRIA research report
- Arsigny, Pennec, et al.
(Show Context)
Citation Context ... has fewer invariance properties and is limited to transformations not too far away from the identity, contrary to the bi-invariant mean. A research report detailing this novel framework is available =-=[92]-=-. 5.4.6. Log-Euclidean Statistics of Diffeomorphisms Keywords: Lie groups, Log-Euclidean, diffeomorphisms, statistics.sProject-Team Asclepios 21 Figure 15. Equation defining Riemannian means, which we... |

16 |
Computational methods for cardiac electrophysiology
- Belik, Usyk, et al.
- 2004
(Show Context)
Citation Context ...late, and monitor its therapy. Quite advanced models have already been proposed to study at the molecular, cellular and organic level a number of physiological systems (see for instance [136], [127], =-=[115]-=-, [138], [121]). While these models and new ones need to be developed, refined or validated, a grand challenge that we want to address in this project is the automatic adaptation of the model to a giv... |

15 | Health-e-Child: An Integrated Biomedical Platform for Grid-Based Pediatrics - Freund |

15 | Left-invariant Riemannian elasticity: A distance on shape diffeomorphisms
- Pennec
- 2006
(Show Context)
Citation Context ...r of deformations between subjects [128] using the log-Euclidean [33] or the affine invariant metric [50] and to reuse these statistics as a regularization criterion for non-linear image registration =-=[86]-=-. A working meeting between X. Pennec, N. Lepore and C. Brun (PhD student at UCLA) was held on this subject at the MICCAI and MFCA conferences in Copenhagen in October, and several articles are curren... |

14 | Blockwise processing applied to brain microvascular network study - Fourard, Malandain, et al. - 2006 |

14 | Building maps of local apparent conductivity of the epicardium with a 2-D electrophysiological model of the heart - Moreau-Villéger, Delingette, et al. |

13 | 3-d tomographic reconstruction of coronary arteries using a precomputed 4-d motion field.,” Phys Med Biol - Blondel, Vaillant, et al. - 2004 |

13 | Realistic numerical modelling of human head tissue exposure to electromagnetic waves from cellular phones - Scarella, Clatz, et al. |

13 | Efficient services composition for grid-enabled data-intensive applications
- Glatard, Montagnat, et al.
- 2006
(Show Context)
Citation Context ...on on the EGEE and Grid’5000 grids was done using our MOTEUR [122], [123][94] workflow manager. MOTEUR allows the execution of an application described as a graph of services in a fully parallel mode =-=[75]-=-. Specific algorithms were developed to allow data management in this context [85]. The execution of the bronze standard application on the EGEE production grid showed that such large-scale and multi-... |

12 | L'analyse automatique des images médicales. Etat de l'art et perspectives", INRIA technical report, n - Ayache - 1998 |

12 | Statistical Computing on Manifolds for Computational Anatomy. Habilitation à Diriger Recherche, - Pennec - 2006 |

12 | Data composition patterns in service-based workflows
- Montagnat, Glatard, et al.
- 2006
(Show Context)
Citation Context ...flow manager. MOTEUR allows the execution of an application described as a graph of services in a fully parallel mode [75]. Specific algorithms were developed to allow data management in this context =-=[85]-=-. The execution of the bronze standard application on the EGEE production grid showed that such large-scale and multi-users platforms introduce a high and variable overhead that highly penalizes the a... |

10 | Principal spine shape deformation modes using Riemannian geometry and articulated models
- Boisvert, Pennec, et al.
(Show Context)
Citation Context ...e can observe in the region of large mean deformations relative differences of the order of 30%, for example in the ventricles.sProject-Team Asclepios 23 To facilitate this task, we proposed a method =-=[66]-=- that automatically extracts the most important deformation modes from a set of 3D spine models. The spine was expressed as a set of rigid transforms that superimpose local coordinates systems of neig... |

10 | Generic web service wrapper for efficient embedding of legacy codes in service-based workflows
- Glatard, Emsellem, et al.
- 2006
(Show Context)
Citation Context ... of the input dataset increases, thus highlighting the need for a large-scale grid. Thus, we investigated methods to reduce the impact of the overhead on production grids. In particular, job grouping =-=[73]-=- and job granularity [77] aim at lowering the number of jobs submitted by the application to reduce the probability for a job to face a high overhead. They are based on a trade-off between the reducti... |

8 | Generalised image models and their application as statistical models of images - Ballester, Pennec, et al. - 2004 |

8 | Computational models for image guided, robot-assisted and simulated medical interventions - Delingette, Pennec, et al. - 2006 |

8 | Evaluation of atlas construction strategies in the context of radiotherapy planning - Commowick, Malandain - 2006 |

8 | An experimental comparison of Grid5000 clusters and the EGEE at
- Glatard, Montagnat, et al.
- 2006
(Show Context)
Citation Context ...uch large-scale and multi-users platforms introduce a high and variable overhead that highly penalizes the application. This overhead was quantified and compared to the one measured on local clusters =-=[74]-=- which was found to be orders of magnitude lower. However, the throughput of the clusters is also lower than the one of production grids, which makes them saturate as the size of the input dataset inc... |

8 | N.: Extrapolating tumor invasion margins for physiologically determined radiotherapy regions
- Konukoglu, Clatz, et al.
- 2006
(Show Context)
Citation Context ...ained from MR and DT-MR images. Based on this model, we derived a formulation to help radiotherapists determine the irradiation region for a patient taking in account the growth dynamics of the tumor =-=[82]-=-. CT and MR images are not successful in visualizing all the tumor infiltration in the brain, especially regions where tumor cell density is low are not enhanced. Radiotherapists deal with these regio... |

7 | Tracking Brain Deformations in Time-Sequences of 3D - PENNEC, CACHIER, et al. |

7 | An Interactive Intensity- and Feature-Based Non-Rigid Registration Framework for 3D - Azar - 2005 |

7 | Stereo reconstruction of the epicardium for optical fluorescence imaging - Chung, Pop, et al. - 2006 |

6 |
Segmentation d’IRM Cérébrales Multi-Séquences et Application à la Sclérose en Plaques
- Dugas-Phocion
- 2006
(Show Context)
Citation Context ...multiple sclerosis patients) and is performed in close collaboration with Christine Lebrun (Neurology Department), at Pasteur Hospital, Nice. Our previous work aimed at detecting lesion in MRI images =-=[29]-=-. However, the lesion load is not correlated to the pathology evolution, and the cerebral atrophy seems to be a better indicator. We have therefore developed tools to measure this atrophy independentl... |

6 | Ayache N., Deformable Atlases for the Segmentation - Linguraru, Ballester |

5 | AYACHE N.: Dynamic model of communicating hydrocephalus for surgery simulation - CLATZ, LITRICO, et al. - 2007 |

5 | Statistics on diffeomorphisms in a Log-Euclidean framework.
- Arsigny, Commonwick, et al.
- 2006
(Show Context)
Citation Context ...In this framework, usual Euclidean statistics can be performed on diffeomorphisms via their logarithms, with excellent mathematical properties like inversioninvariance. In MICCAI’06 and MFCA’06 [58], =-=[60]-=-, we presented two efficient algorithms to compute numerically logarithms of diffeomorphisms and exponentials of vector fields, whose accuracy is studied on synthetic data. Moreover we successfully ap... |

5 |
A novel framework for the 3D analysis of spine deformation modes
- Boisvert, Cheriet, et al.
- 2006
(Show Context)
Citation Context ...ogistic regression that there is a statistically significant relationship between conventional 2D surgical classifications such as King’s classification and the first four principal deformation modes =-=[63]-=-. Thus, our method can be used to extract clinically significant deformation modes from a set of 3D spine models. This can help surgeons to refine arbitrary classes in 3D (King’s or Lenke’s classes, f... |

5 | MOTEUR: A Data-Intensive Service-Based Workflow Manager," Research Report I3S
- Glatard, Montagnat, et al.
- 2006
(Show Context)
Citation Context ...h facilitates algorithm and data sharing and provides computing power to speed-up the execution. A deployment of this application on the EGEE and Grid’5000 grids was done using our MOTEUR [122], [123]=-=[94]-=- workflow manager. MOTEUR allows the execution of an application described as a graph of services in a fully parallel mode [75]. Specific algorithms were developed to allow data management in this con... |

5 | Retrospective cross-evaluation of an histological and deformable 3D atlas of the basal ganglia on series of parkinsonian patients treated by deep brain stimulation
- Bardinet, Dormont, et al.
(Show Context)
Citation Context ...n hepatic surgery [134], [135]. 7.2.9.2. Hôpital de la Pitié-Salpétrière, Paris Dr. J. Yelnik (INSERM U.289), Pr. D. Dormont, and E. Bardinet (CNRS) are our partners in a collaboration with Medtronic =-=[114]-=-. 7.2.9.3. Centre anti-cancer Antoine Lacassagne, Hôpital Pasteur, Nice Dr. Bondiau participates in our research on atlas registration for radiotherapy planning and on tumour growth simulation [82]. 7... |

4 |
Assessment of brace local action on vertebrae relative poses
- Boisvert, Cheriet, et al.
(Show Context)
Citation Context ...bout its actual effect. Previous studies were based on global descriptors of the spine shape (Cobb angle, plane of maximal deformity, etc.) and local shape was never directly assessed. We analyzed in =-=[64]-=- the braces effects at a finer scale to find which vertebral levels were significantly affected by this treatment. The 3D spine geometry of a group of 41 patients treated with a Boston brace and a con... |

4 | Towards a Statistical Atlas of Cardiac Fiber Structure
- PEYRAT, SERMESANT, et al.
- 2006
(Show Context)
Citation Context ... whole diffusion tensors. This tensor analysis allows us to study the variability of laminar sheets which are associated with the second and third eigenvectors. To achieve it, we proposed a framework =-=[87]-=- to register and reorient DT-MRIs in a same reference frame based on anatomical MRIs in order to compute first and second order statistics on diffusion tensors in a LogEuclidean framework at each voxe... |

3 | Epidaure: a Research Project - AYACHE |

3 | Soft Tissue Modeling for Surgery Simulation, in "Computational Models for the Human Body - DELINGETTE, AYACHE - 2004 |

3 | A biologically inspired algorithm for microcalci cluster detection - Linguraru, Marias, et al. - 2006 |

3 | 3D anatomic variability assesment of the scoliotic spine using statistics on Lie groups - Boisvert, Pennec, et al. - 2006 |

3 |
Medical image registration algorithms assessment: Bronze standard application enactment on grids using the MOTEUR work ow engine
- Glatard, Montagnat, et al.
(Show Context)
Citation Context ...ormations, including image artifacts, high deformations in the tumor area and tilts in the image acquisition. The four studied algorithms exhibited similar sub-voxelic accuracy on this database [78], =-=[76]-=-. Because of its computing and data intensive nature, the bronze standard application benefits from a grid implementation which facilitates algorithm and data sharing and provides computing power to s... |

3 |
Biomedical Imaging modalities: a tutorial, in "Computerized Medical Imaging and Graphics", vol. 19, n o 1
- ACHARYA, WASSERMAN, et al.
- 1995
(Show Context)
Citation Context ...s during the past two decades [118]. Readers who are neophyte to the field of medical imaging will find an interesting presentation of acquisition techniques of the main medical imaging modalities in =-=[108]-=-, [104]. Regarding the target applications, a good review of the state of the art can be found in the book Computer Integrated Surgery [103], in N. Ayache’s article [113] and in the more recent synthe... |

3 |
Towards an automatic delineation of lower abdomen structures for conformational radiotherapy based on
- COSTA, DELINGETTE, et al.
- 2005
(Show Context)
Citation Context ...ex mesh. The model undergoes several deformations, guided by regularizing forces and also by image-derived forces, so that it can adjust to the structure’s boundaries. Further details can be found at =-=[116]-=-. 3. The parameter values are then refined and used in a more precise step in the mesh deformation process. If the bladder was found to be non–homogeneous, the mesh is divided into zones that respond ... |

2 | Computation of the Mid-Sagittal Plane - PRIMA, OURSELIN, et al. |

2 | Les mesures de similarité pour le recalage des images médicales, Habilitation à diriger des recherches, Université Nice Sophia-Antipolis - MALANDAIN - 2006 |

2 | An Efficient Locally Affine Framework for the Registration of Anatomical Structures
- COMMOWICK, ARSIGNY, et al.
- 2006
(Show Context)
Citation Context ...of bladder is present in each image and follow the necessary (and often different) steps in each of the cases. 5.2.1.3. Outline of the method 1. Initially, we perform some preliminary treatments (see =-=[69]-=- for more details) and compute a series of parameter values that describe the structure of interest for each patient. We determine whether the image shows the presence of a contrast agent or not, and ... |

2 | Texture-based Segmentation of Instruments - LINGURARU, HOWE - 2006 |

2 |
Tagged magnetic resonance imaging of the heart: a survey, in "Medical Image Analysis", vol. 9, n o 4
- AXEL, MONTILLO, et al.
(Show Context)
Citation Context ...easonable segmentation into skull tissues, white matter, grey matter, and cerebrospinal fluid [146], or to measure some functional properties of the heart from dynamic sequences of Magnetic Resonance =-=[112]-=-, Ultrasound or Nuclear Medicine images [120]. Despite these advances and successes, one can notice that statistical models of the anatomy are still very crude, resulting in poor registration results ... |

1 | Modèles biomécaniques et physio-pathologiques pour l’analyse d’images cérébrales, Thèse de sciences, École des Mines de Paris - CLATZ - 2006 |

1 | Modélisation de structures déformables, Habilitation à diriger des recherches, Université Nice Sophia-Antipolis - DELINGETTE - 2006 |

1 | La simulation de Chirurgie Hépatique, in "Pour la Science - DELINGETTE, AYACHE - 2006 |

1 |
MR Diffusion Tensor Imaging and Fiber Tracking
- DUCREUX, LEPEINTRE, et al.
(Show Context)
Citation Context ...eviously proposed Log-Euclidean framework for DTI processing was assessed through different studies lead in collaboration with MD. Denis Ducreux, radiologist at the hospital KremlinBicêtre, Paris. In =-=[41]-=-, we inspected the usability of DTI and fiber tracking in spinal cord astrocytomas, which are rare neoplasms that can result in alteration of the spinal cord structural integrity (Fig. 25 left). Our o... |

1 |
Diffusion Tensor Imaging and Tractography of Central Pontine Myelinolysis, in "Journal of Neuroradiology", vol. 33, n o 3
- LIBERATORE, DENIER, et al.
- 2006
(Show Context)
Citation Context ...In [40], we showed that DTI, as a pretherapeutic routine investigation in brain tumours, can be helpful as an additional tool to morphological MRI in evaluating the prognosis of patients. Finally, in =-=[45]-=-, we illustrate the value of diffusion tensor imaging and tractography in the diagnosis and follow-up of central pontine myelinolysis (Fig. 25 right). Figure 25. Two examples of Log-Euclidean DTI proc... |

1 | Differentiation of sCJD and vCJD Forms by Automated Analysis of Basal Ganglia Intensity Distribution - LINGURARU, AYACHE, et al. |

1 |
Med.", Published ahead of print
- THIBERVILLE, MORENO-SWIRC, et al.
- 2006
(Show Context)
Citation Context ... fiberoptic probe can be introduced into the working channel of a flexible bronchoscope. This makes it possible to use FCM to study the bronchial autofluorescence at the microscopic level in vivo. In =-=[56]-=-, our mosaicing was successfully used in this clinical setting as shown in Fig. 10. 5.4. Computational Anatomy 5.4.1. Log-Euclidean Processing of Tensors Keywords: DTI, Log-Euclidean, Tensors, regular... |

1 |
Processing and Mosaicing of Fibered
- AYACHE, VERCAUTEREN, et al.
- 2006
(Show Context)
Citation Context ... Rouen University Hospital, France. In 2005, we proposed an algorithm using image sequence mosaicing techniques to widen the field of view (FOV) and enhance the possibilities offered by FCM. In [57], =-=[61]-=-, we further developed this algorithm to compensate for the motion distortions arising from the laser scanning. In the field of biomedical imaging, the issue of validation for image processing tasks i... |

1 | Evaluation sur fantôme d’un logiciel de recalage d’images multimodal automatique pour la radiothérapie, in "17ème Congrès de la Société Française de Radiothérapie Oncologique (SFRO - ISAMBERT, BONNIAUD, et al. - 2006 |

1 |
Evaluation of Multimodality Image Registration Software and Atlas-based Automatic Segmentation for Delineation of Organs at
- ISAMBERT, DHERMAIN, et al.
- 2006
(Show Context)
Citation Context ...rithm is also much more robust to local perturbations in the images (see the eyes on figure 6). Finally, this work is currently being validated in clinical conditions at Institut Gustave Roussy [81], =-=[80]-=-. (a) (b) (c) (d) Figure 6. Comparative results of the atlas-based segmentation. From left to right: Registration using : (a), (b) a dense registration algorithm (axial and sagittal views) and using (... |

1 |
Evaluation d’un logiciel de recalage d’images multimodal et d’un outil de segmentation automatique des organes à risque (OAR) intra-crâniens en situation clinique d’une radiothérapie conformationnelle 3D (RTC3D), in "Congrès annuel de la Société Fran
- ISAMBERT, DHERMAIN, et al.
- 2006
(Show Context)
Citation Context ...e algorithm is also much more robust to local perturbations in the images (see the eyes on figure 6). Finally, this work is currently being validated in clinical conditions at Institut Gustave Roussy =-=[81]-=-, [80]. (a) (b) (c) (d) Figure 6. Comparative results of the atlas-based segmentation. From left to right: Registration using : (a), (b) a dense registration algorithm (axial and sagittal views) and u... |

1 | Atrial Septal Defect Tracking - LINGURARU, VASILYEV, et al. |

1 | A theoretical model of ventricular reentry and its radiofrequency ablation therapy - POP, SERMESANT, et al. |

1 | Aid of Computer Modelling to Identify Ventricular Reentries due to Infarct Scars - POP, SERMESANT, et al. - 2006 |

1 | Assessment of Radiofrequency Ablation of Ventricular Arrhythmias Via Magnetic Resonance Imaging and - POP, SERMESANT, et al. |

1 |
Towards a Statistical Atlas
- PEYRAT, SERMESANT, et al.
(Show Context)
Citation Context ...same reference frame based on anatomical MRIs in order to compute first and second order statistics on diffusion tensors in a LogEuclidean framework at each voxel. We also developed statistical tools =-=[96]-=- to translate the covariance matrix of the whole tensors into variabilities of eigenvalues and eigenvector’s frame orientation. We applied this framework to a dataset of 9 ex vivo canine hearts. From ... |

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Mise en place d’un programme d’analyse d’images en wound healing et mise en évidence du rôle de l’activiation de Arf 1 par le GEF ARNO dans la migration cellulaire, Technical report, Master Imagerie pour la Biologie, Université de Rouen
- VAUCHELLES
- 2006
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Citation Context ...tive named Ab in vivo Ad in vilico and coordinated by A. Habbal from the OPALE team, aims to study the mathematical models of the healing process and to validate them with image processing procedures =-=[99]-=-. 7.2.8. Consulting for Industry • Nicholas Ayache is member of the Scientific Council of Dosisoft (Paris), a subsidiary from the Gustave Roussy Institute and the Curie Institute (Paris). He is scient... |