Academic literature on the topic 'Imagerie cérébrale 3 D'
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Journal articles on the topic "Imagerie cérébrale 3 D":
Froger, J., J. Pelissier, and C. Oppenheim. "Imagerie cérébrale fonctionnelle et rééducation." Journal de Radiologie 87, no. 9 (September 2006): 1103. http://dx.doi.org/10.1016/s0221-0363(06)74137-3.
Menjot de Champfleur, N. "Imagerie par résonance magnétique cérébrale chez l’adulte : les lésions de découverte fortuite." Journal de Radiologie 89, no. 4 (April 2008): 457–58. http://dx.doi.org/10.1016/s0221-0363(08)71448-3.
Nagi, A. Ben Yahmed, A. Ben Hassine, R. Sebai, L. Belghith, and S. Touibi. "P-21 Aspect en imagerie par résonance magnétique de l’angiopathie amyloïde cérébrale." Journal of Neuroradiology 32, no. 2 (March 2005): 91. http://dx.doi.org/10.1016/s0150-9861(05)83101-3.
Drapier, D. "Imagerie cérébrale en psychiatrie : applications cliniques actuelles et défis à venir." European Psychiatry 29, S3 (November 2014): 553. http://dx.doi.org/10.1016/j.eurpsy.2014.09.352.
Cartaud, Alice, and Yann Coello. "The Sensorimotor Foundations of Interpersonal Space Regulation." Intellectica. Revue de l'Association pour la Recherche Cognitive 74, no. 1 (2021): 79–100. http://dx.doi.org/10.3406/intel.2021.1986.
Ka, AM, L. Ndiaye, EM Sy, S. Mbaye, A. Ba, A. Aw, A. Guèye, JP Diagne, and PA Ndiaye. "C78: Une cellulite orbitaire révélant un rhabdomyosarcome naso-sinusien au service d’Ophtalmologie de l’Hôpital Abass Ndao." African Journal of Oncology 2, no. 1 Supplement (March 1, 2022): S33. http://dx.doi.org/10.54266/ajo.2.1s.c78.qgng3470.
Snene, H., H. El Kefi, A. Oumaya, and S. Gallali. "Hypothèses étiopathogéniques de la schizophrénie au décours d’un traumatisme crânien : revue de la littérature." European Psychiatry 28, S2 (November 2013): 32–33. http://dx.doi.org/10.1016/j.eurpsy.2013.09.080.
Thomas, A., C. Féart, C. Delcourt, C. Helmer, M. Edde, G. Catheline, and C. Samieri. "Association entre statut plasmatique en vitamine D et connectivité cérébrale fonctionnelle chez le sujet âgé–cohorte des 3-Cités-Bordeaux." Nutrition Clinique et Métabolisme 33, no. 1 (March 2019): 33–34. http://dx.doi.org/10.1016/j.nupar.2019.01.277.
Ory, F., P. Payoux, C. Thalamas, M. Simonetta-Moreau, P. Chaynes, Y. Lazorthes, O. Rascol, and Ch Brefel-Courbon. "D - 12 Altération du circuit fonctionnel du comportement alimentaire chez des patients parkinsoniens bénéficiant stimulation cérébrale profonde noyau sous thalamique." Revue Neurologique 163, no. 4 (April 2007): 165. http://dx.doi.org/10.1016/s0035-3787(07)90810-3.
BENYAHIA Radia, GUENDOUZ Hamida, CHAHER Nabila, and BENDIB Salah Eddine. "Particularités en imagerie du cancer du sein de la femme jeune de moins de 35 ans." Journal Africain d Imagerie Médicale (J Afr Imag Méd) Journal Officiel de la Société de Radiologie d’Afrique Noire Francophone (SRANF) 16, no. 1 (May 10, 2024): 1–9. http://dx.doi.org/10.55715/jaim.v16i1.533.
Dissertations / Theses on the topic "Imagerie cérébrale 3 D":
Kadalie, Emile. "Development of multi-parametric human MRI at 3T." Electronic Thesis or Diss., Bordeaux, 2023. http://www.theses.fr/2023BORD0493.
Magnetic Resonance Imaging (MRI) is a method of choice for the diagnosis, prognosis and monitoring of pathologies in soft tissues. Indeed, strong contrasts between tissues are obtained and can be modulated on demand. This imaging technique has not shown any harmful influence, enabling repetitive high-resolution exams.Quantitative MRI (qMRI) has become incredibly interesting these last ten years, as it provides maps in which each pixel contains a measurement of a physical parameter. As such, contrarily to conventional images obtained on a gray scale, this MR quantification can be employed to obtain objective interpretations of the images, and to provide a scale for comparing time points and patients.Among the physics parameters that can be quantified, the longitudinal (T1) and the transversal (T2) relaxation times are the most common.The Dual Echo Steady State (DESS) sequence has often been used in musculo-skeletal MRI to rapidly obtain high-contrast morphological images and 3D quantitative T2 mapping. By acquiring two distinct steady-state free precession echoes, two images with different contrasts are built, whose ratio can be used to procure T2 maps by matching it to a computed dictionary of many simulated signals. Nonetheless, the sequence has often been described as sensitive to physiological motion, generating artifacts as well as discrepancies in T2 values. Consequently, the main objective of my work was to implement a rapid 3D DESS sequence for brain imaging that enables T2 estimation accurately and with high repeatability at 3T.To do so, I first identified the cause of the ghosting artifact present in the DESS brain images, through the insertion of a Self-Gating (SG) module. As, its phase was correlated to the signal retrieved from a respiratory belt, B0 variations due to breathing were consequently identified as the source of the ghosting on the brain images.To correct this artifact, a Compressed Sensing dedicated trajectory was implemented so as to retrospectively bin the data into multiple respiratory phases, and reconstruct undersampled k-spaces into images with high quality. To increase the repeatability of the method, the conventional Cartesian encoding was replaced by a Spiral Cartesian encoding, which further distributed the artifact as noise on the images. 3D T2 maps were then acquired with a spatial resolution of 1.2mm isotropic, and were of high quality and repeatable on all the volunteers.The new methodology was then implemented on a 1.5T and a 7T Siemens scanners. This proved that the corrected DESS method set in place during this PhD can be used on images obtained from different scanners, and different magnetic fields.Despite these improvements, the brain T2 values remained short compared to a Spin-Echo sequence. To investigate this issue, several simulations were performed and highlighted the influence of B0 variations in the T2 errors, as well as the high sensitivity to short T2 components. To correct the measurements, a dictionary taking into account multiple B0 variations was created. This will be useful in the case where the DESS sequence is applied on a moving organ like the liver.Also, as additional sequences have to be inserted into the protocol to correct the T2 measurements, a simultaneous T1 and T2 estimation was investigated. To reach this goal, the gradient echo trains within the MP2RAGE sequence were replaced by DESS trains. Sequence parameter optimization was explored via the Cramer Rao Lower Bound method so as to obtain both accurate T1 and T2 maps.In conclusion, through the implementation of a self-gating module, a spiral Cartesian encoding and a Compressed-Sensing acceleration, the new DESS sequence allows a rapid and repeatable estimation of T2 in the whole brain in 3D at multiple magnetic fields.Further improvements are needed to improve the T2 accuracy, and to simultaneously measure multiple quantitative parameters though the application of one sequence
Van, de moortele Pierre-françois. "Irm fonctionnelle cérébrale à 3 Tesla : développements méthodologiques." Paris 11, 1999. http://www.theses.fr/1999PA11T018.
The aim of this work is to optimize functional studies of the human brain on a whole body 3 Tesla MRI scanner. A number of artifacts were to be fixed, mainly related to the Echo Planar Imaging sequence, which affords extremely fast acquisition rates, but is highly sensitive to strong artifacts (distortion, ghost image) and produces a high level of noise. These effects are even worsened at high magnetic field values. We proposed, validated and implemented sorne original methodological approaches to attenuate some artifacts and improve the quality of fMRI studies conducted in the laboratory. We have implemented a correction procedure for image distortions (from P. Jezzard) that we have validated on cerebral activation measurements. To suppress the ghost image, which is characteristic of Echo Planar Imaging, we modified a double sampling technique (from Yang), for continuous phase encoding Echo Planar Imaging, and we wrote a specifie algorithm needed for image reconstruction. To present auditory stimuli in the context of the high level of noise, we designed two modified Echo Planar sequences with the insertion of silent periods to present verbal material to the subject. One sequence is dedicated for blocked design experiments, the other for event-elated paradigms. The modified sequences were also validated in phantom studies. After having shown that sarnpling the brain slice by slice over time produced significant bias in images analysis, we have developed and implemented a correction algorithm to interpolate samples on the first slice acquisition time for each brain volume. Head motions are one of the main sources of unsuccessful fMRI studies. To measure the head position in the magnet, we demonstrate the feasibility of a method based on non proton fiducial markers, the position of which is measured by projections interleaved in the Echo Planat imaging scheme
Chételat, Gaël. "Maladie d'Alzheimer au stade pré-démentiel : neuropsychologie et imagerie cérébrale." Lyon 1, 2002. http://www.theses.fr/2002LYO1T084.
Henry, Axelle. "Vectorisation cérébrale de deux radiotraceurs d’intérêts pour l’imagerie, la m-iodobenzylguanidine (MIBG) et la 3’-désoxy-3’- fluoro-L-thymidine (FLT)." Thesis, Rouen, INSA, 2016. http://www.theses.fr/2016ISAM0019.
This research work focuses on targeting MIBG or FLT to the central nervous system. The synthesis of 1,4-dihydroquinoline carriers was first carried out in a non-radioactive manner. Previous results led us to consider the use of a linker to connect MIBG to the carrier. Regarding FLT, we focused our interest in the development of a carrier system connected directly to FLT via an ester function. For modulating the redox properties of our delivery systems, we synthesized 1,4-dihydroquinolines having electron-donating or electron-withdrawing groups at position 6 and/or 7. A study in acetonitrile/PBS buffer to determine the influence of these groups on the release of FLT was performed by HPLC. The radiosynthesis of these targeting systems was then conducted to evaluate the ability of 1,4- dihydroquinolines to deliver MIBG or FLT across the blood brain barrier (BBB). Thus, using carbon-11, we radiolabeled the delivery systems to validate the BBB crossing. Small animais were used for ex vivo studies to monitor the brain penetration and the kinetics of oxidation in the brain and periphery
Jolivel, Valérie. "Contribution à l’étude des effets neuroprotecteurs du PACAP et caractérisation d’un sonde fluorescente pour mesurer l’activité caspase-3 in vivo après ischémie cérébrale." Rouen, 2009. http://www.theses.fr/2009ROUES008.
Stroke represents an important public health problem without any treatment to prevent cell loss. Pituitary adenylate cyclase-activating polypeptide (PACAP) seems to be a good therapeutic candidate because of its ability to reduce significantly infarct volume and to improve functional deficits after cerebral ischemia but the action has been mainly studied in rodents. The results of this PhD indicate that the PACAPergic system present in the brain of primates is closely related to the one found in rodents and suggest that the neuroprotective effects of the peptide might be transposed to the primate even if the therapeutic dose should be carefully chosen. Finally we have developed a probe that allowed to detect caspase-3 activity in vivo which should speed up the experiments concerning the antiapoptotic action of PACAP after a cerebral ischemia
Stitou, Youssef. "Modélisation paramètrique 3-D fondée sur la décomposition de Wold : applications au filtrage de blocs sismiques 3-D." Bordeaux 1, 2006. http://www.theses.fr/2006BOR13296.
Xie, Lizhe. "Reconstruction 3-D des artères coronaires en imagerie rotationnelle R-X." Rennes 1, 2012. http://www.theses.fr/2012REN1S143.
This work addresses the 3-D reconstruction of coronary arteries from a limited number of projections in rotational angiography. We propose two approaches to solve the ill-posed inverse problem. The first one is formulated as a statistical reconstruction problem and uses a Maximum a Priori (MAP) algorithm, in which L0, L1 and L2 regularizations are evaluated. The second one applies an object-oriented reconstruction, introducing a morphological model of the structure to be reconstructed. It is formed by the coronary artery centerlines and contours. The inverse problem resolution leads to minimize the strain energy of the model in both space and time. Finally the initial assumption of a prior segmentation of the structures leads to a sparse reconstruction problem that allows the parameter number in the system and the search for the solution to be restricted within a subdomain of f. The accuracy and limitations of each algorithm are evaluated and compared using a dynamic heart phantom. This dynamic sequence has been built from patient data acquired on a MSCT scan. A C-arm rotational R-X coronary angiography was then simulated using the Siemens Axiom System imaging protocol to build a sequence of 80 grey level projections
Kherif, Ferath. "Applications de modèles statistiques multivariés à la résolution de problèmes posés par les données d' imagerie fonctionnelle cérébrale." Paris 6, 2003. http://www.theses.fr/2003PA066598.
Rabut, Claire. "Neuroimagerie fonctionnelle ultrasonore 4D et connectivité fonctionnelle cérébrale chez l’animal éveillé." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS328.
This thesis focuses on the application of functional ultrasound imaging for new pre-clinical imaging modalities in rodents. Functional Ultrasound imaging (fUS) is a brain imaging modality based on Doppler imaging which makes possible to image the cerebral vascular activity with a very good sensitivity. As a first step, a new acquisition device was developed to allow transcranial functional imaging in awake, freely moving mice. We applied this device to measure the alteration of functional connectivity induced by a drug model of Alzheimer's disease. The pharmacodynamic study in awake mice allowed us to measure stable and dose dependent alterations in functional connectivity. The study was validated by a classifier automating the distinction of the pathological states using supervised learning. Using a new type of ultrasound scanner, we have also expanded the field of view of fUS imaging to the third dimension. The implemented technology has extended fUS acquisition capabilities to 4D functional. High quality films of the volume cerebral blood dynamics were obtained in rats and showed the feasibility of 4D fUS technology through different functional measurement applications. Finally, we applied the method of supersonic shear wave elastography to the evaluation of the stiffness of functional areas in the brain. We were able to monitor the brain activity by tracking changes in blood volume and at the same time generating shear waves to determine the stiffness of activated functional regions following external stimulations. The work carried out in this thesis has expanded the perspectives of pre-clinical ultrasound functional imaging for neuroscience research
Rauchs, Géraldine. "Sommeil et consolidation mnésique chez le sujet sain et dans la maladie d'Alzheimer : neuropsychologie cognitive et imagerie cérébrale." Caen, 2004. http://www.theses.fr/2004CAEN1406.
Books on the topic "Imagerie cérébrale 3 D":
Liner, Christopher L. Elements of 3-D seismology. Tulsa, Okla: PennWell, 1999.
Levine, Shar. 3-D lungs and micro tongues. Toronto: Somerville House, 1999.
Trucco, Emanuele. Introductory techniques for 3-D computer vision. Upper Saddle River, NJ: Prentice Hall, 1998.
Burkholder, Earl F. The 3-D global spatial data model: Foundation of the spatial data infrastructure. Boca Raton: Taylor & Francis, 2008.
Johnstone, Leslie, Elaine Humphrey, and Shar Levine. 3-D Lungs and Micro Tongues. Somerville House, USA, 1998.
Burkholder, Earl F. 3-D Global Spatial Data Model. Taylor & Francis Group, 2019.
Burkholder, Earl F. 3-D Global Spatial Data Model: Principles and Applications. Taylor & Francis Group, 2020.
Burkholder, Earl F. 3-D Global Spatial Data Model: Principles and Applications, Second Edition. Taylor & Francis Group, 2017.
Burkholder, Earl F. 3-D Global Spatial Data Model: Principles and Applications, Second Edition. Taylor & Francis Group, 2017.
Burkholder, Earl F. 3-D Global Spatial Data Model: Principles and Applications, Second Edition. Taylor & Francis Group, 2017.
Book chapters on the topic "Imagerie cérébrale 3 D":
Dietemann, J. L., S. Draghici, S. Kremer, A. Bogorin, M. Abu Eid, and R. Sanda. "Ischémie cérébrale." In Neuro-Imagerie Diagnostique, 59–138. Elsevier, 2018. http://dx.doi.org/10.1016/b978-2-294-75394-7.00002-3.
Mazoyer, Bernard. "Chapitre 3 : Imagerie fonctionnelle cérébrale." In Chimie et cerveau, 45–58. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1894-5-006.
Mazoyer, Bernard. "Chapitre 3 : Imagerie fonctionnelle cérébrale." In Chimie et cerveau, 45–58. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-1894-5.c006.