Academic literature on the topic 'Tomographie par émissions de positon (TEP)'
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Journal articles on the topic "Tomographie par émissions de positon (TEP)"
Leboulleux, S., Cl Dromain, E. Baudin, G. Bonniaud, J. Lumbroso, and M. Schlumberger. "P192 - Apport de la tomographie par émission de positon (TEP) dans la prise en charge des corticosurrénalomes malins métastatiques." Annales d'Endocrinologie 65, no. 4 (September 2004): 386–87. http://dx.doi.org/10.1016/s0003-4266(04)95903-3.
Full textLemonnier, I., C. Baumann, N. Jay, K. Alzahouri, P. Arveux, D. Jolly, C. Lejeune, et al. "La tomographie par émission de positon (TEP) modifie t-elle la prise en charge diagnostique du nodule pulmonaire isolé (NPI) ?" Revue d'Épidémiologie et de Santé Publique 56, no. 2 (May 2008): 105–6. http://dx.doi.org/10.1016/j.respe.2008.03.043.
Full textLemonier, I. "La tomographie par émission de positon (TEP) modifie-t-elle la prise en charge diagnostique du nodule pulmonaire isolé (NPI) ?" Revue d'Épidémiologie et de Santé Publique 56, no. 2 (April 2008): 131. http://dx.doi.org/10.1016/j.respe.2008.03.105.
Full textLannes, F., and P. O. Fais. "Quelle valeur donner à une fixation prostatique fortuite sur une tomographie par émission de positon au 18 F-fluorodésoxyglucose (TEP 18 F-FDG) ?" Progrès en Urologie 27, no. 13 (November 2017): 702–3. http://dx.doi.org/10.1016/j.purol.2017.07.063.
Full textBendriem, Bernard, and Jacques Delforge. "La tomographie par émission de positons (TEP)." Annales de l'Institut Pasteur / Actualités 9, no. 3 (October 1998): 227–35. http://dx.doi.org/10.1016/s0924-4204(99)80002-x.
Full textKolesnikov-Gauthier, Hélène, and Philippe Carpentier. "Tomographie par émission de positons (TEP) et cancer de l’endomètre." Bulletin du Cancer 99, no. 1 (January 2012): 21–28. http://dx.doi.org/10.1684/bdc.2011.1514.
Full textWartski, Myriam. "La tomographie par émission de positons (TEP) en oncologie digestive." La Presse Médicale 45, no. 9 (September 2016): 734–41. http://dx.doi.org/10.1016/j.lpm.2016.06.028.
Full textChassoux, F., and C. Chiron. "Tomographie par émission de positons (TEP) : quelles indications, quels bénéfices ?" Neurochirurgie 54, no. 3 (May 2008): 219–25. http://dx.doi.org/10.1016/j.neuchi.2008.02.023.
Full textde Dreuille, O., P. Maszelin, H. Foehrenbach, G. Bonardel, and J. F. Gaillard. "Principe et technique de la tomographie par émission de positons (TEP)." EMC - Radiologie 1, no. 1 (February 2004): 2–35. http://dx.doi.org/10.1016/j.emcrad.2003.12.001.
Full textLomeña, F. "La tomographie par émission de positons (TEP) hors oncologie : l’exploration du cerveau." Médecine Nucléaire 32, no. 10 (October 2008): 502–10. http://dx.doi.org/10.1016/j.mednuc.2008.07.006.
Full textDissertations / Theses on the topic "Tomographie par émissions de positon (TEP)"
Le, Maitre Amandine. "Optimisation de l'utilisation de l'imagerie TEP pour la planification de traitement en radiothérapie." Thesis, Brest, 2012. http://www.theses.fr/2012BRES0029.
Full textThere has been an increasing interest for the use Positron Emission Tomography (PET) combined with Computed Tomography for radiotherapy treatment planning. It improves target volume delineation by reducing inter and intra-observer variability and allows visualizing biological heterogeneities. Plethoras of segmentation algorithm have been proposed but there is a lack of consensus regarding which one to use. Monte Carlo simulations are interesting to validate these algorithms since they allow creating datasets with known ground-truth and for which all acquisition parameters are controlled.We proposed several methodologies for improving the realism of simulations. Several datasets incorporating patient specific variability in terms of anatomy and activity distributions, realistic tumor shape and activity modeling and integrating the respiratory motions were created.These data were used in a first study concerning target volume definition. Several algorithms were compared for radiotherapy treatment planning. The accuracy of segmentation was related to the quality of ground-truth volume coverage. We also studied the impact of respiratory motion on segmentation accuracy.We investigated the use of an advanced segmentation method able to define high uptake sub-volumes, for heterogeneous dose prescriptions. Several scenarios of prescriptions were compares in terms of Tumor Control Probability (TCP) computed on PET images. Variability of this TCP due to acquisition parameters was quantified. The impact of contrast and size of sub-volume was studied. Finally we studied the usefulness of the addition of compartments to such heterogeneous prescriptions
Thureau, Sébastien. "Apport de l'imagerie fonctionelle par Tomographie par émissions de positons (TEP) en radiothérapie pulmonaire." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMR128/document.
Full textRésumé en anglais non disponible
Farradèche, Morgane. "Chambre d'ionisation liquide détecteur de photons γ pour l'imagerie TEP." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS115/document.
Full textCaLIPSO is a photon detector concept designed for dedicated brain Positron Emission Tomography. It is a medical imaging technique based on the coincidence detection of two 511-keV photons. For the first time, the liquid trimethylbismuth is used as sensitive medium. Each 511-keV photon releases a primary electron that triggers a Cherenkov radiation and ionizes the medium. CaLIPSO operates as a time projection chamber and detects both Cherenkov light and charge signal. As the total number of released charges is proportional to the energy deposited by the initial photon, we were able to measure the charge production yield (or free ion yield) of the trimehylbismuth. To this end, we developed a purification bench associated with a low-noise measurement system for the current induced by a γ-ray source of photons with a precision < 5 fA for an electric field up to 7 kV/cm. The tetramethylsilane was used as a benchmark liquid to validate the measurement. We obtained a free ion yield of trimethylbismuth 6 times lower than the typical values for similar dielectric liquids. Quantum chemistry computations on heavy atoms shown that this behavior is due to the geometry of the trimethylbismuth molecule. The bismuth atom acts as an electron trapping center which induces an additional recombination mechanism of the electrons near their parent cations. Finally, in order to verify this hypothesis and to quantify the mobility of charges in liquids, we developed an individual charge pulses measurement system which has been successfully validated with tetramethylsilane
Giboureau, Nicolas. "Diagnostic précoce de la maladie d'Alzheimer : développement de médicaments radiopharmaceutiques fluorés pour l'exploration scintigraphique en tomographie d'émission de positon (TEP)." Tours, 2007. http://www.theses.fr/2007TOUR3323.
Full textVAChT and nAChRs are related cholinergic markers involved in the early stages of AD. Imaging both these targets using PET would be of benefit to obtain an early diagnosis of AD. In the case of VAChT, we developed benzovesamicol analogues : (2R, 3R)-5-FPOBV (10), (2S, 3S)-5-FPOBV (11) and (2R, 3R)-5-FEOBV (15). These compounds were radiolabelled with 18F then in ex vivo and in vivo evaluation (in rat and baboon), a low and homogeneous brain uptake was found. Futhermore, high accumulation of radioactivity in bone, indicating defluorination of [18F]10 and [18F]11 was observed. From these results, [18 F]10, [18F]11, [18F]15 appear not to be suitable for in vivo imaging of the VAChT. Concerning nAChRs, [18F]21 was radiolabelled with 18F then in vivo evaluation was performed in baboon. [18F]21 shows selectivity for the receptors in the thalamus and an unexpected uptake in the striatum which could be due to other nAChRs or other receptors
David, Simon. "Analyse d'images pour les études de la réponse thérapeutique en Tomographie par Émission de Positon." Brest, 2011. http://www.theses.fr/2011BRES2059.
Full textPositron Emission Tomography (PET) is a tool for therapy response assessment. It is also used for the definition of a biological tumour volume with one or more PET scans measuring different tumour. Three fusion methods have been developed to combine follow-up or multi-tracer PET scans. Based on the Bayesian classification principle, the first approach noted ASEM can be used for the fusion of either follow-up or multi-tracer scans. The second method consists in merging multi-tracer scans through the Dempster-Shafer theory (DS) in order to define a global tumour volume. The third approach is based on the change detection principle using the Dezert-Smarandache theory (DSm), applied to follow-up scans. The methods were applied to simulated and clinical datasets in follow-up and multi-tracer context. Their performances were compared to the use of fixed and adaptive thresholding and the Fuzzy-Cmean algorithm. On simulated datasets, the fixed and adaptive thresholds and the FCM algorithm led to higher errors than the ASEM approach. The change detection method was associated with satisfactory performance on simulated follow-up data. For the clinical follow-up data, the fixed threshold and the FCM segmentation failed to provide coherent measurements. The adaptive threshold demonstrated low robustness, leading to very high variability in the measurements. The ASEM method wais the one for which the variations of the measurement are the most coherent with the therapeutic response. These results were further confirmed by the results obtained on multi-tracer clinical cases. The threshold methods and the FCM segmentation were less robust versus noise arid tumour contrast. On the other hand, the analysis associated with the ASEM fusion emphasized the robustness of this approach
Moussallem, Mazen. "Optimisation de la délimitation automatique des tumeurs pulmonaires à partir de l'imagerie TEP/TDM pour les planifications dosimétriques des traitements par radiothérapie." Phd thesis, Université Claude Bernard - Lyon I, 2011. http://tel.archives-ouvertes.fr/tel-00864905.
Full textColard, Elyse. "Méthode d'obtention d'images TEP paramétriques de la cinétique de fixation du FDG basée sur une approche mathématique intégrant un modèle d'erreur de mesures." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMR110/document.
Full textPositron Emission Tomography (PET) with 2-[18]-Fluoro-2-deoxy-D-glucose (FDG) is a functional imaging technique especially used in oncology to quantify glucose metabolism of tumour lesions. In clinical routine, quantitative analysis of these images is carried out using the standardized uptake value (SUV). More sophisticated quantification approaches have been proposed in the literature, but they requiremultiple blood samples and/or at least a 50 minutes PET acquisition. As a result, they are difficult to implement in clinical routine. Our work focused on the development of a non-invasive approach, named ParaPET, based on the initial work of [Barbolosi et al. 2016], allowing the determination of 3D maps of dynamic biomarkers and only requiring a PET scan of a limited duration. Our approach includes several improvements, including the development of a new model for the estimation of the FDG activity concentration and the associated measurement error, based on amultiple PET reconstruction protocol using temporal data resampling, the determination of the blood FDG activity concentration using PET aorta images, and the characterisation of tumour lesions at a voxel level. Our approach was evaluated on a database of 31 patients with non-small cell lung cancer (NSCLC) treated by chemo-radiation therapy, that we previously constructed. Our analysis focused on thedetermination of the biomarker Ki , the net influx of FDG in the lesion. Our results show no significant difference in the Ki estimate between our approach and the reference method, the Patlak graphical analysis [Patlak et al. 1983]. We also have shown the existence of a strong correlation between Ki and SUV images (R2 ¸ 0,87).However, these images are not identical, and may provide additional information, for example for necrotic regions. Finally, we studied the relative variation of Ki (¢(K¤ i )) and SUVmax (¢(SUVmax )) between pre- et per-therapeutic PET scans. We have found a poor correlation between ¢(K¤i ) et ¢(SUVmax ) (R2 = 0,60) over the entire range of variation, but a higher correlation from ¢(SUVmax ) values ¸ 40 %. The meaning and the medical interest associated with small variations of SUV and Ki should be further investigated. To conclude, our ParaPET approach allows a simplified determination of kinetic parameters of FDG uptake, which will enhance the tumour characteristics that may be of interest for radiomics
Bodet-Milin, Caroline. "Optimisation clinique du pré-ciblage utilisant l'anticorps anti-ACE humanisé trivalent TF2 et le haptène bivalent IMP288 dans 2 modèles de tumeurs exprimant l'ACE, pour une application thérapeutique en radioimmunothérapie et pour une application en imagerie par émission de positon appelée immuno-TEP." Nantes, 2015. http://archive.bu.univ-nantes.fr/pollux/show.action?id=cf1de8a2-37e0-4099-b039-ac77549668ea.
Full textOur team contributed to the optimization and validation of pretargeting using bispecific antibodies and radiolabeled haptens in various preclinical and clinical models of CEA-expressing tumors. The new generation of anti-CEA bispecific antibody (bsMAb) TF2 and IMP288 bivalent hapten are available and accessible for transfer to clinical applications but require optimization step to determine the optimal pre-targeting scheme including the molar doses of TF2 and IMP288, the TF2/IMP288 ratio and the pretargeting delay. The main objective of this work was to optimize the clinical use of the TF2/IMP288 system in 2 models of CEA-expressing tumors using pharmacokinetic and imaging data obtained in a RIT study and in an imaging PET study (immunoPET). The preliminary results obtained from the prospective multicentric pretargeted-RIT phase I/II optimization study using TF2 and 177Lu-IMP288 in patients with CEA-expressing relapsing lung tumours allowed us to determine the optimal bsMAb dose and pre-targeting delay for therapeutic application and to confirm the accuracy of 111In-labeled images to predict 177Lu-IMP288 distribution and to estimate absorbed doses to major organs and tumours. The preliminary results obtained from the phase I/II immunoPET trial using TF2 and 68Ga-IMP288 in 5 cohorts of 3 patients with progressive MTC allowed us to demonstrate the feasibility of this new imaging approach and to define the optimal pre-targeting scheme for immuno-PET applications
Peyron, Roland. "Étude des douleurs neurologiques par lésion du système nerveux central en tomographie d'émission de positons (TEP) et évaluation des composantes attentionnelles de la douleur chez le sujet sain lors d'une stimulation nocive." Lyon 1, 2000. http://www.theses.fr/2000LYO1T103.
Full textHumbert, Olivier. "Imagerie TEP au 18F-FDG du cancer du sein : étude du comportement métabolique des différents phénotypes tumoraux et prédiction de la réponse tumorale à la chimiothérapie néoadjuvante." Thesis, Dijon, 2015. http://www.theses.fr/2015DIJOS024/document.
Full textPositron Emission Tomography (PET) with 18Fluoro-deoxyglucose (18F-FDG) is the reference imaging examination for in-vivo quantification of the glucidic metabolism of tumour cells. It allows for the monitoring of tumour metabolic changes during chemotherapy. Breast cancer comprises several distinct genomic entities with different biological characteristics and clinical behaviours, leading to different tailored treatments. The aim of this doctoral thesis was to evaluate the relationship between the different biological entities of breast cancer and the tumour metabolic behaviour during neoadjuvant chemotherapy. We have also retrieved, among the various metabolic parameters on PET images, the most reliable ones to predict, as early as after the first neoadjuvant cycle, the final tumour histologic response and patient’s outcome. We have also evaluated early changes in tumour blood flow, using a tumour first-pass model derived from an dynamic 18F-FDG-PET acquisition.The first article presented in this thesis has underlined the strong correlation between breast cancer subtypes, and the tumour metabolic behaviour during chemotherapy. The following three articles have demonstrated that tumour metabolic changes after the first neoadjuvant cycle can predict the final histologic complete response at the end of the treatment, both in triple-negative and HER2 positive tumours. Concerning the luminal/HER2 subtype, the early metabolic response mainly predicts patient’s outcome.These results should lead, in the near future, to PET-guided neoadjuvant strategies, in order to adapt the neoadjuvant treatment in poor-responding women. Such a strategy should lead to enhanced personalized medicine
Book chapters on the topic "Tomographie par émissions de positon (TEP)"
Kerrou, K. "Tomographie par émission de positons couplée à la tomodensitométrie (TEP-TDM) Indications et perspectives dans le cancer du sein." In Cancer du sein, 257–75. Paris: Springer Paris, 2012. http://dx.doi.org/10.1007/978-2-8178-0245-9_21.
Full textAlexandre, J., A. Balian, L. Bensoussan, A. Chaïb, G. Gridel, K. Kinugawa, F. Lamazou, et al. "Tomographie par émission de positons au [18F]-déoxyglucose (TEP-scan)." In Le tout en un révisions IFSI, 127–28. Elsevier, 2009. http://dx.doi.org/10.1016/b978-2-294-70633-2.50032-9.
Full text"Tomographie par émission de positons au [18F]- déoxyglucose (TEP-scan)." In Méga Guide STAGES IFSI, 134–35. Elsevier, 2015. http://dx.doi.org/10.1016/b978-2-294-74529-4.00032-x.
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