Relevant bibliographies by topics / Radiological mapping

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Radiological mapping'

Author: Grafiati
Published: 4 May 2024

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Journal articles on the topic "Radiological mapping"

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Bhattarai, Manoj. "Radiological Mapping Of Nepalese Calvaria." Journal of Nobel Medical College 2, no. 1 (March 3, 2013): 31–35. http://dx.doi.org/10.3126/jonmc.v2i1.7670.

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Introduction Skull has cranial vault and base. The cranial vault is called as calvarium which roofs the cranial cavity (brain box).Cranial vault consists of frontal, parietal and occipital bones. Total thickness of calvarial bones includes outer table, diploe and inner table. Diploe is made up of spongy bone whereas outer and inner table made up of compact bone. Objective To measure the thickness of Nepalese calvarial bones i.e. Frontal, Parietal and Occipital. Methods It is a hospital base cross-sectional study. CT records of one hundred and fifty adult people were studied. Nine various points on frontal bone, seven on parietal and six on occipital were located and their thickness were measured bilaterally with help of CT scan. Results The present study showed that Mean thickness+_SD of frontal bone were 6.1+_1.8mm; parietal 4.6+_2.2 and occipital 9.5+_3.4. The study also showed that frontal bone had 2.4+_0.8 mm thick outer table; 1.4+_0.6mm inner table and 3.5+_1.3mm diploe. Similarly parietal bone had 1.9+_0.6 mm thick outer table; 1.1+_0.4mm inner table and 0.8+_0.5mm diploe. The occipital bone had 3.5+_1.5 mm thick outer table; 2.2+_0.8mm inner table and 4.3+_1.8mm diploe. Similarly this present study also calculated the mean thickness+_SD of outer table in the calvarium as 2.7+_1.3mm and that of inner table 1.5+_0.9 mm. Thus it concluded that outer table was thicker than inner table. Journal of Nobel Medical College Vol. 2, No.1 Issue 3 Nov.-April 2013 Page 31-35 DOI: http://dx.doi.org/10.3126/jonmc.v2i1.7670
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Ashton, Fiona, Jayasree Ramas Ramaskandhan, Adam Farrier, and Malik Siddique. "Topographic Pain Mapping versus Radiological Inter-observer Variation in Ankle Arthritis." Foot & Ankle Orthopaedics 2, no. 3 (September 1, 2017): 2473011417S0001. http://dx.doi.org/10.1177/2473011417s000100.

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Category: Ankle, Ankle Arthritis Introduction/Purpose: Topographic pain mapping has gained popularity during 20th century, providing opportunities for patients to demonstrate spatial distribution of pain. Despite this, evidence of clinical application in orthopaedics remains largely limited to spinal pathologies. We investigate how clinician interpretation of routine radiological studies compares to patient pain mapping in ankle arthritis. Methods: Between 2014 and 2016 we identified 21 patients ultimately diagnosed with ankle arthritis, who underwent comprehensive gait analysis (including topographic pain mapping) on referral to our institution. Patients were requested to map up to three pain areas, assigning a visual analogue score (VAS) of 0-10, to signify severity of pain in each area. A consultant orthopaedic foot and ankle surgeon, and orthopaedic trainees undertook blinded evaluation of relevant radiological studies, estimating patients’ mapping and VAS scores on the basis of radiological pathology. For the purpose of analysis findings were applied to five distinct regions around the ankle: three anterior (antero-medial; central; and antero-lateral), lateral and medial. Results were correlated between the different assessors, as well as to the patients’ pain mapping, using Spearman’s Rho & Kendall Tau correlation statistics, significance taken as p=<0.05. Results: There is a strong radiological inter-observer correlation for anterior ankle pain in ankle arthritis [Antero-lateral 0.751(p=0.012); Central 0.912(p=<0.001)]. These findings also correlate well with patient pain mapping [Central consultant-patient 0.920(p=<0.001); trainee-patient 0.982(p=<0.001)]. Assessment of medial (tibialis posterior) and lateral (subtalar/peroneal) pathology demonstrates poorer inter-observer correlations (p>0.05). Correlation to patient pain mapping was even poorer, with radiological assessment consistently over- estimating symptom severity (p=>0.05). Conclusion: There is a statistically strong correlation between topographic pain mapping and radiological evaluation of ankle arthritis. We strongly recommend that additional pathology around the ankle is excluded by use of pre-operative MRI imaging prior to surgery for ankle arthritis. Pain from ankle arthritis appears to mask additional soft tissue pathology surrounding the ankle noted on MRI scan.
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Garba, Nuraddeen Nasiru, Ahmad Termizi Ramli, Muneer Aziz Saleh, Syazwan Mohd Sanusi, and Hamman Tukur Gabdo. "Radiological mapping of Kelantan, Malaysia, using terrestrial radiation dose rate." Isotopes in Environmental and Health Studies 52, no. 3 (November 5, 2015): 214–18. http://dx.doi.org/10.1080/10256016.2016.1095189.

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Azevedo, A. M. de, J. L. Gonçalves, A. P. Salazar, D. D'O Cardoso, P. V. Gonzales, V. A. V. Ferreira, and W. V. Nunes. "Radiometric survey with Remotely Piloted Land Vehicle in Chemical, Biological, Radiological and Nuclear Defense operations." Brazilian Journal of Radiation Sciences 11, no. 1A (April 27, 2023): 01–13. http://dx.doi.org/10.15392/2319-0612.2023.2184.

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This article addresses the development of a remotely piloted vehicle for the chemical, biological, radiological, and nuclear army defense system, able itself to perform radiometric surveys remotely favoring the process of local mapping and investigation of possible dispersions of radioactive materials in radiological and nuclear accidents and incidents. Tests were carried out to verify the efficiency of the developed prototype and it can be verified that the vehicle has a great applicability and optimizes the radiological protection process.
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Karadeniz, Özlem, and Cüneyt Akal. "Radiological mapping in the granodiorite area of Bergama (Pergamon)-Kozak, Turkey." Journal of Radioanalytical and Nuclear Chemistry 302, no. 1 (June 8, 2014): 361–73. http://dx.doi.org/10.1007/s10967-014-3216-9.

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Zeb, Jahan, Mohammad Wasim, Abdul Rashid, and Waheed Arshed. "Radiological mapping of the area around two research reactors in Islamabad." Journal of Radioanalytical and Nuclear Chemistry 306, no. 2 (May 26, 2015): 451–55. http://dx.doi.org/10.1007/s10967-015-4200-8.

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Hautot, Felix, Philippe Dubart, Charles-Olivier Bacri, Benjamin Chagneau, and Roger Abou-Khalil. "Visual Simultaneous Localization And Mapping (VSLAM) methods applied to indoor 3D topographical and radiological mapping in real-time." EPJ Web of Conferences 153 (2017): 01005. http://dx.doi.org/10.1051/epjconf/201715301005.

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Hautot, Felix, Philippe Dubart, Charles-Olivier Bacri, Benjamin Chagneau, and Roger Abou-Khalil. "Visual Simultaneous Localization and Mapping (VSLAM) methods applied to indoor 3D topographical and radiological mapping in real-time." EPJ Nuclear Sciences & Technologies 3 (2017): 15. http://dx.doi.org/10.1051/epjn/2017010.

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Chen, Lu, Wen Chen, Huan-Huan Chen, Qian Wu, Xiao-Quan Xu, Hao Hu, and Fei-Yun Wu. "Radiological Staging of Thyroid-Associated Ophthalmopathy: Comparison of T1 Mapping with Conventional MRI." International Journal of Endocrinology 2020 (October 22, 2020): 1–6. http://dx.doi.org/10.1155/2020/2575710.

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Background. Accurate staging of patients with thyroid-associated ophthalmopathy (TAO) is crucial for clinical decision. Full cognition of pathologic changes and staging TAO using conventional T2-weighted imaging is still limited. Purpose. To investigate the feasibility of using T1 mapping to evaluate changes of extraocular muscles (EOMs) in TAO patients, as well as to compare T1 mapping and conventional T2-weighted imaging in staging TAO. Materials and Methods. Forty TAO patients were retrospectively enrolled. “Hot spot” and “cold spot” T1 relaxation times (T1RTHS and T1RTCS) of EOMs, as well as conventionally applied highest signal intensity ratio (SIR) of EOMs, were measured and compared between active and inactive groups. Results. T1RTCS and SIR were significantly higher in active TAOs than in the inactive ones ( P < 0. 001 ), while T1RTHS was not ( P = 0. 093 ). Meanwhile, T1RTCS and SIR were positively correlated with clinical activity score (r = 0.489, 0.540; P < 0. 001 ). TIRTCS and SIR showed no significant area under curve for staging TAO (0.830 vs. 0.852; P = 0. 748 ). T1RTCS ≥ 1000 alone showed optimal staging specificity (90.0%), while integration of T1RTCS ≥ 1000 and SIR ≥ 2.9 demonstrated optimal staging efficiency and sensitivity (area under curve, 0.900; sensitivity, 86.0%). Conclusions. Our findings suggest that the T1-mapping technique holds the potency to be utilized in TAO. The derived T1RTCS of EOMs, which may be associated with fat infiltration, could be a useful biomarker to stage the disease, serving added efficiency, sensitivity, and specificity to single usage of conventional SIR.
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Berger, Mitchel S., Joseph Kincaid, George A. Ojemann, and Ettore Lettich. "Brain Mapping Techniques to Maximize Resection, Safety, and Seizure Control in Children with Brain Tumors." Neurosurgery 25, no. 5 (November 1, 1989): 786–92. http://dx.doi.org/10.1227/00006123-198911000-00015.

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Abstract Intraoperative brain mapping techniques were used to localize language cortex, sensorimotor pathways, and seizure foci in children with supratentorial brain tumors. The methods of direct cortical and subcortical stimulation, in addition to electrocorticography, enabled us to maximize tumor resection, minimize morbidity, and eradicate epileptogenic zones which were always adjacent to, but not involving, the tumor nidus. Language localization was found to be quite variable in the children tested and anatomically unpredictable based on the preoperative neurological or radiological examination. Physiological mapping techniques, therefore, appear to be safe, reliable, and very useful for operations on tumors located within or adjacent to eloquent brain regions in the pediatric population.
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Dissertations / Theses on the topic "Radiological mapping"

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Macario, Barros Andréa. "Modular device for automated and reliable mapping of indoor installations." Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPASP186.

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Dans le cadre des opérations de démantèlement, l'établissement d'une cartographie radiologique précise est essentiel, car cela facilite l'identification des zones présentant des niveaux de rayonnement élevés. Cette tâche repose principalement sur les opérateurs de radioprotection qui quadrillent les zones à contrôler et réalisent des mesures aux positions correspondantes. Néanmoins, cette méthode manuelle est sujette à des erreurs humaines, peut être physiquement épuisante pour les opérateurs et les exposer à des environnements potentiellement contaminés. Par conséquent, la littérature explore progressivement des approches alternatives, comme l'intégration de mesures radiologiques avec des techniques de localisation et de cartographie simultanées (SLAM). Ces techniques offrent la capacité de cartographier l'environnement et de déterminer l'emplacement d'un capteur sans recourir aux systèmes GPS ou GNSS, généralement inopérants dans les installations nucléaires intérieures. Cependant, les solutions incorporant le SLAM dans la littérature sont souvent limitées à la localisation d'un seul type de mesure nucléaire, présentent un encombrement conséquent (dimensions et poids), et nécessitent une étape de post-traitement. En réponse à ces limitations, cette thèse propose le développement d'un dispositif modulaire pour la reconstruction et localisation 3D de mesures radiologiques, avec la volonté d'identifier l'algorithme SLAM le plus adapté au cadre du démantèlement embarqué. Sachant que la littérature présente un large éventail d'algorithmes SLAM et d'odométrie, sélectionner le plus fiable pour la reconstruction des installations nucléaires n'est pas chose aisée. Pour répondre à cette question, une révision de la littérature des algorithmes visuel-SLAM a été menée. Par la suite, ces algorithmes ont été évalués quant à leur résilience dans les conditions rencontrées dans les environnements en démantèlement. Cinq algorithmes ont été retenus pour être mis en œuvre parmi la gamme d'algorithmes identifiés, chacun ayant le potentiel de produire des performances satisfaisantes dans le contexte de cette thèse. Les algorithmes sélectionnés comprennent les Direct Sparse Odometry (DSO), Visual-Inertial Direct Sparse Odometry (VI-DSO), Large Scale Direct Monocular SLAM (LSD-SLAM), Semi-direct Visual Odometry (SVO), and Visual Inertial Semi-direct Visual Odometry (VI-SVO). Pour permettre leur comparaison, un nouvel ensemble de données représentant les caractéristiques des opérations de cartographie radiologique a été conçu. Cet ensemble de données a été créé à partir d'un nouveau prototype intégrant des images stéréo et des données inertielles, sphériques et radiologiques. Il a permis l'analyse comparative des algorithmes en tenant compte de leur précision de localisation et cartographie, de leur embarquabilité et de leur capacité à localiser les points chauds. Le VI-SVO a présenté les erreurs moyennes les plus faibles pour la localisation et une performance équivalente aux autres algorithmes pour la cartographie. Le VI-DSO s'est avéré être l'algorithme le plus approprié pour une implémentation embarquée. Contrairement au VI-SVO, cet algorithme n'a pas pu traiter toutes les séquences de l'ensemble des données. Parmi les algorithmes évalués, le VI-SVO a été le seul à traiter avec succès toutes les séquences et à localiser les zones de contamination. Il est donc l'algorithme le plus approprié pour la cartographie radiologique
In the context of the Dismantling and Decommissioning processes, establishing a precise radiological mapping is essential, as it facilitates the identification of areas with elevated radiation levels. This task predominantly relies on manual procedures performed by radiation protection operators, who construct matrices and allocate the measurements to their corresponding spatial positions. Nonetheless, this conventional method is more susceptible to human errors, can be physically exhausting for the operators, and expose them to potentially contaminated environments. Consequently, the literature is progressively exploring alternative approaches, as the integration of radiological measurements with Simultaneous Localization and Mapping (SLAM) techniques. SLAM technology offers the capability to concurrently mapping the surrounding environment and determining the location of a sensor, without the reliance on GPS or GNSS systems, which are typically non-functional within indoor nuclear facilities. Nevertheless, existing SLAM solutions in the literature are often limited to the localization of one type of nuclear measurement, tend to be cumbersome in design, and require post-processing procedures. In response to these limitations, this thesis proposes the development of a modular device for online 3D environment reconstruction and radioactivity measurement localization, focusing on the identification of the most appropriate SLAM algorithm in the context of embedded nuclear dismantling. While the literature presents an array of SLAM and odometry algorithms, selecting the most robust one for reconstructing nuclear facilities is not straightforward. To address this concern, a comprehensive review of state-of-the-art visual-sensor-based SLAM algorithms was conducted. Subsequently, these algorithms were critically evaluated concerning their resilience in the specific conditions encountered in dismantling environments. Five were chosen for implementation from the array of identified algorithms, each with the potential to yield satisfactory performance in the context of nuclear facility reconstruction. These selected algorithms include Direct Sparse Odometry (DSO), Visual-Inertial Direct Sparse Odometry (VI-DSO), Large Scale Direct Monocular SLAM (LSD-SLAM), Semi-direct Visual Odometry (SVO), and Visual Inertial Semi-direct Visual Odometry (VI-SVO). A novel dataset was conceived in the frame of this thesis to facilitate a comparative assessment. This dataset aims to accurately represent the characteristics of radiological mapping operations within nuclear facilities. This dataset was conceived using a new handheld prototype integrating stereo images and inertial, spherical, and radiological data. The proposed dataset allowed the benchmarking of the algorithms considering algorithms' tracking and mapping accuracies, embeddability, and ability to locate hotspots. The VI-SVO presented the lowest average errors for the tracking and an equivalent performance as the other algorithms for the mapping. The VI-DSO has been demonstrated to be the most suitable algorithm for an embedded implementation. However, unlike the VI-SVO, this algorithm could not process all the real-case sequences. Among the evaluated algorithms, the VI-SVO was the only one to successfully process all the sequences in the dataset and localize the contamination data, being the most suitable algorithm for the radiological mapping
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Massad, Laila. "Desempenho diagnóstico e mapeamento cognitivo cerebral de radiologistas veterinários através de um sistema computacional." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/5/5160/tde-18122008-095704/.

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Com intuito de avaliar o processo cognitivo cerebral e o desempenho de médicos veterinários especializados em radiologia, este estudo proporcionou, através de um sistema computacional, tarefas de questões radiológicas. Os 29 voluntários foram divididos por gênero: homens (n=13) e mulheres (n=16); e por tempo de especialidade: iniciantes (n=13), experientes (n=8) e seniores (n=8). Quatorze casos foram selecionados com diferentes níveis de dificuldade a partir de imagens radiográficas de cães e gatos e foram escaneadas e colocadas em um programa chamado Enscer®, adaptado para a realização deste estudo. Os casos eram divididos em três partes, nomeadas, história clínica, imagem radiográfica e decisão diagnóstica. Durante as etapas, foram realizados eletroencefalogramas dos voluntários, que resultaram em mapeamentos cerebrais. Além disso, foi feita avaliação das respostas corretas, incorretas e dos tempos utilizados para as tarefas. Através das avaliações estatísticas dos resultados foi possível concluir que radiologistas veterinários com maior tempo de especialidade foram estatisticamente mais rápidos nas tarefas e tiveram melhor desempenho diagnóstico; voluntários com maior tempo de especialidade ativaram áreas cerebrais diferentes dos menos experientes; o desempenho diagnóstico foi quantitativamente igual em voluntários de ambos os gêneros e o mapeamento cerebral do grupo masculino foi diferente do grupo feminino, mesmo com desempenho igual nas atividades
With intention to evaluate the cerebral cognitive process and the performance of medical veterinarians specialized in radiology, this study provided, through a computerized system, tasks of radiological questions. The 29 volunteers were divided by gender: man (n=13) and woman (n=16); and by time of experience: beginners (n=13), experienced (n=8) and seniors (n=8). Fourteen cases were selected with different levels of difficulty from radiographic images of dogs and cats and had been scanned and processed by a software called Enscer®, adapted for the accomplishment of this study. The cases were divided into three parts, namely, clinical history, radiographic image and diagnostic decision. During the stages the electroencephalography was carried through, which resulted in the cerebral mapping. Moreover, evaluation of the correct and incorrect answers and of the times used for the tasks was made. Through the statistical evaluations of the results it was possible to conclude that radiologists veterinarians with more time of experience had been statistically faster in the tasks and had had better diagnostic performance; volunteers with more time of experience had activated different cerebral areas than volunteer with less experience; the diagnostic performance was quantitatively equal in volunteers of both genders and the cerebral mapping of the masculine group was different of the feminine group, even with equal performance in the activities
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Passmore, Gregory. "The effects of Gowin's vee heuristic diagraming and concept mapping on meaningful learning in the radiation science classroom and laboratory /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9737850.

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Book chapters on the topic "Radiological mapping"

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Funtowicz, Silvio O., and Jerome R. Ravetz. "Mapping Uncertainties of Radiological Hazards." In Uncertainty and Quality in Science for Policy, 172–91. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0621-1_14.

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Hancox, Graham, Sue Hignett, Hilary Pillin, Spyros Kintzios, Jyri Silmäri, and C. L. Paul Thomas. "Ergonomics Systems Mapping for Professional Responder Inter-operability in Chemical, Biological, Radiological and Nuclear Events." In Advances in Intelligent Systems and Computing, 89–96. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96098-2_13.

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Conference papers on the topic "Radiological mapping"

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Kemp, Samuel, and Jonathan Rogers. "UAV-UGV Teaming for Rapid Radiological Mapping." In 2021 IEEE International Symposium on Safety, Security, and Rescue Robotics (SSRR). IEEE, 2021. http://dx.doi.org/10.1109/ssrr53300.2021.9597870.

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Lazna, Tomas, Petr Cabrlik, Petr Sladek, Tomas Jilek, and Ludek Zalud. "Unmanned Aircraft System-Based Radiological Mapping of Buildings." In 2022 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2022. http://dx.doi.org/10.1109/iros47612.2022.9981415.

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Hautot, Felix, Philippe Dubart, Roger Abou-Khalil, and Massimo Morichi. "Novel real-time 3D radiological mapping solution for ALARA maximization, D&D assessments and radiological management." In 2015 4th International Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA). IEEE, 2015. http://dx.doi.org/10.1109/animma.2015.7465648.

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Armstrong, Gary A., and G. R. Dochat. "Topographical mapping system for radiological and hazardous environments acceptance testing." In Intelligent Systems & Advanced Manufacturing, edited by David P. Casasent. SPIE, 1997. http://dx.doi.org/10.1117/12.290327.

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Languirand, Eric R., and Amalthea Trobare. "Focusless hand-held proximal Raman detection and two-dimensional mapping of explosives." In Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXIV, edited by Jason A. Guicheteau and Christopher R. Howle. SPIE, 2023. http://dx.doi.org/10.1117/12.2662856.

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Lee, J., M. S. Bandstra, B. J. Quiter, D. Gunter, and K. Vetter. "Simultaneous Radiological Spectral Decomposition and Source Mapping with a Single Detector." In 2023 IEEE Nuclear Science Symposium, Medical Imaging Conference and International Symposium on Room-Temperature Semiconductor Detectors (NSS MIC RTSD). IEEE, 2023. http://dx.doi.org/10.1109/nssmicrtsd49126.2023.10338667.

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Emmons, Erik, Kevin Hung, Darren K. Emge, Erik Roese, and Jason A. Guicheteau. "Wide-area mapping and identification system for detection of chemical contamination on surfaces." In Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XX, edited by Jason A. Guicheteau and Chris R. Howle. SPIE, 2019. http://dx.doi.org/10.1117/12.2520608.

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McCown, Jay P., Donna M. Rogers, and Charles A. Waggoner. "An Integrated System for Conducting Radiological Surveys of Contaminated Sites." In ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16312.

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This paper describes an integrated detection system that has been developed to conduct radiological surveys of sites suspected of contamination of materials such as depleted uranium. This system utilizes cerium activated lanthanum bromide and thallium activated sodium iodide gamma detectors and can be easily adapted to include units for detecting neutrons. The detection system includes software controlling the collection of radiological spectra and GPS data. Two different platforms are described for conducting surveys, a modified zero turn radius (ZTR) mower and a three-wheeled cart that is manually pushed. The detection system software controlling data collection has components that facilitate completing a gridless survey on user specified spacings. Another package confirms that all data quality activities (calibrations, etc.) are conducted prior to beginning the survey and also reviews data to identify areas that have been missed for which data quality falls below user designated parameters. Advanced digital signal processing algorithms are used to enhance the interpretation of spectra for conducting background subtractions and for mapping. Data from radiation detection instruments and GPS antennae are merged and made compatible with mapping using Geosoft Oasis montaj software. A summary of system performance during field-testing is included in the paper. This includes survey rate, detection limits, duty cycle, supporting ancillary equipment/material, and manpower requirements. The rate of false positives and false negatives is discussed with the benefits of surveys conducted using synergetic detection systems such as electromagnetic induction imaging.
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Jasiobedzki, Piotr, Ho-Kong Ng, Michel Bondy, and C. H. McDiarmid. "C2SM: a mobile system for detecting and 3D mapping of chemical, radiological, and nuclear contamination." In SPIE Defense, Security, and Sensing, edited by Edward M. Carapezza. SPIE, 2009. http://dx.doi.org/10.1117/12.817830.

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Venara, J., M. Ben Mosbah, C. Mahé, M. Masson, and J. L. Paul. "Radiological Characterization Methods Specifically Applied to the Preparation of the Dismantling of PHENIX Fast Reactor." In ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96061.

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Knowledge of the radiological state of processes and equipment of a nuclear facility is essential to supervise a wide variety of sensitive tasks: building of intervention scenarios in order to optimize maintenance or dismantling operations, optimization of waste categorization, monitoring the effectiveness of decontamination processes, monitoring of nuclear facility decommissioning, etc. In order to meet the diversity of the issues involved, the CEA has developed in situ radiological characterization methods and techniques to acquire reliable radiological data. The data gathered is necessary to build robust radiological models which can be used as input data for dismantling studies. Over the last 30 years, the main nuclear measurement techniques, such as gamma imaging and gamma spectrometry, have been widely deployed by the CEA on many facilities under dismantling and more recently, on the Phénix nuclear power plant. Phénix was a small-scale prototype of a sodium-cooled fast breeder reactor, located at the Marcoule nuclear site. These techniques have been implemented on this reactor in order to meet the increased need for radiological knowledge to prepare for future dismantling operations following its final shutdown in 2009. This paper will focus on the description of three radiological characterization methods which take advantage of advanced nuclear measurement techniques. For each method, an example of a specific application on the Phénix reactor will be presented. Firstly, the so-called “gamma scanning” method will be explained. The objective of this method is to determine the activity profile of equipment based on collimated gamma spectrometry measurements with compact probes like CdZnTe. This method was applied to a neutron shielding of the reactor core to estimate the 60Co activity profile. Then the measured activities helped to validate the theoretical activities resulting from neutron activation calculations. Secondly, this paper will focus on the interest of combining different measurement techniques such as gamma imaging, gamma spectrometry and collimated/uncollimated dose rate mapping to characterize complex equipment or processes. In this case, a specific methodology was developed to define the radiological state of a shielded cell used for the processing of irradiated nuclear fuels. Finally, an isotopic characterization technique using a high purity germanium detector will be discussed. This technique was applied to a non-irradiated fertile fuel sub-assembly in order to determine the level of uranium enrichment. The processing was carried out by three types of analysis: two automated, with the MGA-U and IGA software, and one manual.
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Reports on the topic "Radiological mapping"

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Shin, Tony. Gaussian process regression for radiological contamination mapping. Office of Scientific and Technical Information (OSTI), January 2021. http://dx.doi.org/10.2172/1760555.

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Moya, Nicholas, and Tad Whiteside. Autonomous Sampling Platform Development: Radiological Contamination Mapping at SRS. Office of Scientific and Technical Information (OSTI), July 2016. http://dx.doi.org/10.2172/1281774.

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Shin, Tony, and Suzanne Nowicki. Smart Mobile Sensor Platform Development for Radiological Mapping of Large-scale Areas. Office of Scientific and Technical Information (OSTI), January 2021. http://dx.doi.org/10.2172/1760556.

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Shin, Tony. Gaussian process regression for radiological contamination mapping Applied to optimal motion planning for mobile sensor platforms. Office of Scientific and Technical Information (OSTI), September 2021. http://dx.doi.org/10.2172/1822694.

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Armstrong, G. A., B. L. Burks, and S. D. van Hoesen. South Tank Farm underground storage tank inspection using the topographical mapping system for radiological and hazardous environments. Office of Scientific and Technical Information (OSTI), July 1997. http://dx.doi.org/10.2172/631168.

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