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Outil privilégié des radiologues, le scanner est depuis de nombreuses années la modalité d'imagerie en coupe la plus utilisée dans le domaine de l'imagerie. Cet ouvrage fait le point sur cette technique et ses plus récents perfectionnements au fil de quatre chapitres richement illustrés : - le premier chapitre est consacré à la production des rayons X ; - le second se concentre sur les interactions entre les photons X et la matière ainsi que sur les conséquences concernant la qualité de l'image ; - le troisième chapitre analyse la détection de l'image radiante dont la conversion en image interprétable par le radiologue a été considérablement transformée à l'arrivée des détecteurs numériques ; - le dernier chapitre traite des technologies, paramètres et techniques de reconstruction afin d'obtenir une l'image. Des autoévaluations interactives, disponibles en ligne , complètent chacun de ces chapitres et de nombreuses vidéos viennent soutenir les différentes explications des auteurs. Destiné aux radiologues, aux manipulateurs en radiologie et à tout professionnel du domaine de l'imagerie médicale, ce livre constitue également un outil de formation et de mise au point essentiel pour toute personne se dédiant à l'imagerie médicale.

Diagnostic Imaging --- Tomography, X-Ray Computed --- Tomography, X-ray computed --- Diagnostic imaging --- Tomograph --- Tomography --- Imagerie pour le diagnostic --- Tomodensitomètres --- Scanographie --- Tomodensitomètres --- Diagnostic Imaging. --- Tomography, X-Ray Computed.

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In Canada, stroke is the third most common cause of death with an estimated incidence of approximately 50,000 cases each year. The majority of strokes are ischemic (80%) and are a result of interruption of blood flow to the brain caused by a blood clot. Transient Ischemic Attack (TIA) is defined as "a transient episode of neurodysfunction caused by focal brain, spinal cord, or retinal ischemia, without acute infarction". Approximately 15,000 Canadians experience a TIA each year and are five times more likely to suffer from a stroke in the following two years when compared to the general population. The need for an accurate and timely diagnostic test is therefore needed, as the risk of recurrent stroke within 90 days after a TIA is between 10% to 20%. The combination of imaging modalities, laboratory tests, and clinical features provide a comprehensive diagnosis for stroke. Advances in imaging technology such as computed tomography (CT) and magnetic resonance imaging (MRI) have allowed for the distinction between hemorrhagic and ischemic strokes, providing clinicians with greater certainty whether to administer thrombolysis. With rapid scan times and ease for detecting intracranial hemorrhage, CT has shown to be a preferred diagnostic technology. MRI has been shown to easily detect ischemia with diffusion-weighted imaging and also detects hyperacute hemorrhage with proper sequences. MRI is not as widely available as CT and is typically more costly. With no single gold standard for the diagnosis of stroke, uncertainty regarding the appropriateness of solely using CT or expert clinical assessment remains. Furthermore, current clinical practice guidelines state that CT tests must be performed, though this technology is not always available in rural or remote emergency departments. The objective of this review is to summarize recent clinical evidence of CT and expert clinical assessment to support the diagnosis of stroke and TIAs.

Cerebrovascular disease --- Patients. --- Tomography. --- Stroke --- Tomography, X-Ray Computed. --- Clinical medicine --- Clinical trial --- Ct scan --- Educational assessment --- Health --- Health care --- Health sciences --- Magnetic resonance imaging --- Medical diagnosis --- Medical imaging --- Diagnosis. --- diagnosis.

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Colorectal Cancer Screening and Computerized Tomographic Colonography: A Comprehensive Overview is an authoritative volume on CT colonography. Structured in a manner that will allow the reader to understand the practical and larger public health issues surrounding both CT colonography and CRC screening in general, the text is designed to reach a broad audience of specialist clinicians and primary care physicians. The book provides an overview of the disease and risk factors of colorectal cancer, as well as the history and development of CTC as both a colorectal imaging and screening modality. The text also reviews the controversies, potential pitfalls, and exciting new directions and capabilities inherent in the practice of CTC. Filled with high quality images and authored by experts in the field, Colorectal Cancer Screening and Computerized Tomographic Colonography: A Comprehensive Overview is the definitive reference for clinicians interested in computerized tomographic colonography and CRC screening.

Colon (Anatomy) -- Cancer -- Diagnosis. --- Rectum -- Cancer -- Diagnosis. --- Tumor markers -- Diagnostic use. --- Colon (Anatomy) --- Rectum --- Intestinal Neoplasms --- Analytical, Diagnostic and Therapeutic Techniques and Equipment --- Tomography, X-Ray Computed --- Investigative Techniques --- Gastrointestinal Neoplasms --- Image Interpretation, Computer-Assisted --- Digestive System Neoplasms --- Diagnostic Imaging --- Diagnostic Techniques and Procedures --- Neoplasms by Site --- Neoplasms --- Diseases --- Colorectal Neoplasms --- Diagnosis --- Methods --- Colonography, Computed Tomographic --- Medicine --- Health & Biological Sciences --- Oncology --- Gastroenterology --- Cancer --- Tomography --- Medical screening --- Diagnosis. --- Evaluation. --- Tomography. --- Colonoscopy, Virtual --- Computed tomographic colonography --- Tomographic colonography --- Virtual colonoscopy --- Mass medical screening --- Mass screening, Medical --- Medical examinations --- Screening, Medical --- Medicine. --- Radiology. --- Gastroenterology. --- Primary care (Medicine). --- Medicine & Public Health. --- Imaging / Radiology. --- Primary Care Medicine. --- Diagnostic services --- Health risk assessment --- Radiology, Medical. --- Emergency medicine. --- Medicine, Emergency --- Critical care medicine --- Disaster medicine --- Medical emergencies --- Clinical radiology --- Radiology, Medical --- Radiology (Medicine) --- Medical physics --- Internal medicine --- Digestive organs --- Gastroenterology . --- Primary medical care --- Medical care --- Radiological physics --- Physics --- Radiation

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Respiratory motion causes an important uncertainty in radiotherapy planning of the thorax and upper abdomen. The main objective of radiation therapy is to eradicate or shrink tumor cells without damaging the surrounding tissue by delivering a high radiation dose to the tumor region and a dose as low as possible to healthy organ tissues. Meeting this demand remains a challenge especially in case of lung tumors due to breathing-induced tumor and organ motion where motion amplitudes can measure up to several centimeters. Therefore, modeling of respiratory motion has become increasingly important in radiation therapy. With 4D imaging techniques spatiotemporal image sequences can be acquired to investigate dynamic processes in the patient’s body. Furthermore, image registration enables the estimation of the breathing-induced motion and the description of the temporal change in position and shape of the structures of interest by establishing the correspondence between images acquired at different phases of the breathing cycle. In radiation therapy these motion estimations are used to define accurate treatment margins, e.g. to calculate dose distributions and to develop prediction models for gated or robotic radiotherapy. In this book, the increasing role of image registration and motion estimation algorithms for the interpretation of complex 4D medical image sequences is illustrated. Different 4D CT image acquisition techniques and conceptually different motion estimation algorithms are presented. The clinical relevance is demonstrated by means of example applications which are related to the radiation therapy of thoracic and abdominal tumors. The state of the art and perspectives are shown by an insight into the current field of research. The book is addressed to biomedical engineers, medical physicists, researchers and physicians working in the fields of medical image analysis, radiology and radiation therapy.

Fourth dimension. --- Radiotherapy. --- Respiration --- Tomography, X-Ray Computed --- Statistics as Topic --- Epidemiologic Research Design --- Diagnosis, Computer-Assisted --- Diagnostic Imaging --- Therapy, Computer-Assisted --- Mathematical Concepts --- Radiotherapy, Computer-Assisted --- Imaging, Three-Dimensional --- Physical Processes --- Epidemiologic Methods --- Health Care Evaluation Mechanisms --- Diagnosis --- Radiographic Image Enhancement --- Diagnostic Techniques and Procedures --- Tomography, X-Ray --- Physical Phenomena --- Phenomena and Processes --- Respiratory Physiological Processes --- Therapeutics --- Decision Making, Computer-Assisted --- Radiography --- Respiratory Physiological Phenomena --- Tomography --- Quality of Health Care --- Public Health --- Investigative Techniques --- Analytical, Diagnostic and Therapeutic Techniques and Equipment --- Medical Informatics Applications --- Medical Informatics --- Circulatory and Respiratory Physiological Phenomena --- Environment and Public Health --- Health Care Quality, Access, and Evaluation --- Health Care --- Information Science --- Four-Dimensional Computed Tomography --- Radiotherapy Planning, Computer-Assisted --- Sensitivity and Specificity --- Motion --- Respiratory Mechanics --- Image Interpretation, Computer-Assisted --- Physics --- Medicine --- Health & Biological Sciences --- Physical Sciences & Mathematics --- Radiology, MRI, Ultrasonography & Medical Physics --- Light & Optics --- Image Interpretation, Computer Assisted --- Computer-Assisted Image Interpretation --- Computer-Assisted Image Interpretations --- Image Interpretations, Computer-Assisted --- Interpretation, Computer-Assisted Image --- Interpretations, Computer-Assisted Image --- Breathing Mechanics --- Breathing Mechanic --- Mechanic, Breathing --- Mechanic, Respiratory --- Mechanics, Breathing --- Mechanics, Respiratory --- Respiratory Mechanic --- Motions --- Sensitivity --- Specificity --- Specificity and Sensitivity --- Planning, Computer-Assisted Radiotherapy --- Computer-Assisted Radiotherapy Planning --- Dosimetry Calculations, Computer-Assisted --- Calculation, Computer-Assisted Dosimetry --- Calculations, Computer-Assisted Dosimetry --- Computer Assisted Radiotherapy Planning --- Computer-Assisted Dosimetry Calculation --- Computer-Assisted Dosimetry Calculations --- Dosimetry Calculation, Computer-Assisted --- Dosimetry Calculations, Computer Assisted --- Planning, Computer Assisted Radiotherapy --- Radiotherapy Planning, Computer Assisted --- Information Sciences --- Science, Information --- Sciences, Information --- Community-Based Distribution --- Contraceptive Distribution --- Delivery of Healthcare --- Dental Care Delivery --- Distribution, Non-Clinical --- Distribution, Nonclinical --- Distributional Activities --- Healthcare --- Healthcare Delivery --- Healthcare Systems --- Non-Clinical Distribution --- Nonclinical Distribution --- Delivery of Dental Care --- Health Care Delivery --- Health Care Systems --- Activities, Distributional --- Activity, Distributional --- Care, Health --- Community Based Distribution --- Community-Based Distributions --- Contraceptive Distributions --- Deliveries, Healthcare --- Delivery, Dental Care --- Delivery, Health Care --- Delivery, Healthcare --- Distribution, Community-Based --- Distribution, Contraceptive --- Distribution, Non Clinical --- Distributional Activity --- Distributions, Community-Based --- Distributions, Contraceptive --- Distributions, Non-Clinical --- Distributions, Nonclinical --- Health Care System --- Healthcare Deliveries --- Healthcare System --- Non Clinical Distribution --- Non-Clinical Distributions --- Nonclinical Distributions --- System, Health Care --- System, Healthcare --- Systems, Health Care --- Systems, Healthcare --- Healthcare Quality, Access, and Evaluation --- Circulatory and Respiratory Physiological Phenomenon --- Physiology, Circulatory and Respiratory --- Circulatory and Respiratory Physiology --- Computer Science, Medical --- Health Information Technology --- Informatics, Clinical --- Informatics, Medical --- Information Science, Medical --- Clinical Informatics --- Medical Computer Science --- Medical Information Science --- Health Information Technologies --- Information Technologies, Health --- Information Technology, Health --- Medical Computer Sciences --- Medical Information Sciences --- Science, Medical Computer --- Technologies, Health Information --- Technology, Health Information --- Application, Medical Informatics --- Applications, Medical Informatics --- Informatics Applications, Medical --- Informatics Application, Medical --- Medical Informatics Application --- Investigative Technics --- Investigative Technic --- Investigative Technique --- Technic, Investigative --- Technics, Investigative --- Technique, Investigative --- Techniques, Investigative --- Environment, Preventive Medicine & Public Health --- Environment, Preventive Medicine and Public Health --- Health, Public --- Quality of Care --- Quality of Healthcare --- Care Qualities --- Care Quality --- Health Care Quality --- Healthcare Quality --- Tomographies --- Physiology, Respiratory --- Pulmonary Physiological Phenomena --- Pulmonary Physiological Phenomenon --- Pulmonary Physiological Process --- Pulmonary Physiological Processes --- Respiratory Physiological Concepts --- Respiratory Physiological Phenomenon --- Respiratory Physiological Process --- Respiratory Physiologic Processes --- Respiratory Physiology --- Concept, Respiratory Physiological --- Concepts, Respiratory Physiological --- Phenomena, Pulmonary Physiological --- Phenomena, Respiratory Physiological --- Phenomenas, Pulmonary Physiological --- Phenomenas, Respiratory Physiological --- Phenomenon, Pulmonary Physiological --- Phenomenon, Respiratory Physiological --- Phenomenons, Pulmonary Physiological --- Phenomenons, Respiratory Physiological --- Physiologic Processes, Respiratory --- Physiological Concept, Respiratory --- Physiological Concepts, Respiratory --- Physiological Phenomena, Pulmonary --- Physiological Phenomena, Respiratory --- Physiological Phenomenas, Pulmonary --- Physiological Phenomenas, Respiratory --- Physiological Phenomenon, Pulmonary --- Physiological Phenomenon, Respiratory --- Physiological Phenomenons, Pulmonary --- Physiological Phenomenons, Respiratory --- Physiological Process, Pulmonary --- Physiological Process, Respiratory --- Physiological Processes, Pulmonary --- Physiological Processes, Respiratory --- Process, Pulmonary Physiological --- Process, Respiratory Physiological --- Processes, Pulmonary Physiological --- Pulmonary Physiological Phenomenas --- Pulmonary Physiological Phenomenons --- Respiratory Physiological Concept --- Respiratory Physiological Phenomenas --- Respiratory Physiological Phenomenons --- Respiratory System --- Diagnostic X-Ray --- Diagnostic X-Ray Radiology --- X-Ray Radiology, Diagnostic --- Radiology, Diagnostic X-Ray --- Roentgenography --- X-Ray, Diagnostic --- Diagnostic X Ray --- Diagnostic X Ray Radiology --- Diagnostic X-Rays --- Radiology, Diagnostic X Ray --- X Ray Radiology, Diagnostic --- X Ray, Diagnostic --- X-Rays, Diagnostic --- Computer-Assisted Decision Making --- Medical Decision Making, Computer-Assisted --- Computer Assisted Decision Making --- Decision Making, Computer Assisted --- Medical Decision Making, Computer Assisted --- Therapy --- Treatment --- Therapeutic --- Therapies --- Treatments --- Disease --- Physical Phenomenon --- Physical Process --- Physical Concepts --- Concept, Physical --- Concepts, Physical --- Phenomena, Physical --- Phenomenon, Physical --- Physical Concept --- Process, Physical --- Processes, Physical --- Radiographic Tomography --- Tomography, Radiographic --- Tomography, X Ray --- Tomography, Xray --- Transmission Tomography --- X Ray Tomography --- Xray Tomography --- Tomography, Transmission --- X-Ray Tomography --- Zonography --- Diagnostic Technics and Procedures --- Technics and Procedures, Diagnostic --- Techniques and Procedures, Diagnostic --- Image Enhancement, Radiographic --- Radiography, Digital --- Digital Radiography --- Enhancement, Radiographic Image --- Enhancements, Radiographic Image --- Image Enhancements, Radiographic --- Radiographic Image Enhancements --- Antemortem Diagnosis --- Diagnoses and Examinations --- Examinations and Diagnoses --- Postmortem Diagnosis --- Antemortem Diagnoses --- Diagnoses --- Diagnoses, Antemortem --- Diagnoses, Postmortem --- Diagnosis, Antemortem --- Diagnosis, Postmortem --- Postmortem Diagnoses --- Healthcare Evaluation Mechanisms --- Evaluation Mechanism, Healthcare --- Evaluation Mechanisms, Healthcare --- Healthcare Evaluation Mechanism --- Mechanism, Healthcare Evaluation --- Mechanisms, Healthcare Evaluation --- Epidemiologic Method --- Epidemiological Methods --- Methods, Epidemiologic --- Epidemiological Method --- Method, Epidemiologic --- Method, Epidemiological --- Methods, Epidemiological --- Epidemiology --- 3-D Image --- 3-D Imaging --- Computer-Generated 3D Imaging --- Three-Dimensional Image --- Three-Dimensional Imaging, Computer Generated --- Computer-Assisted Three-Dimensional Imaging --- Imaging, Three-Dimensional, Computer Assisted --- 3 D Image --- 3 D Imaging --- 3-D Images --- 3-D Imagings --- 3D Imaging, Computer-Generated --- 3D Imagings, Computer-Generated --- Computer Assisted Three Dimensional Imaging --- Computer Generated 3D Imaging --- Computer-Assisted Three-Dimensional Imagings --- Computer-Generated 3D Imagings --- Image, 3-D --- Image, Three-Dimensional --- Images, 3-D --- Images, Three-Dimensional --- Imaging, 3-D --- Imaging, Computer-Assisted Three-Dimensional --- Imaging, Computer-Generated 3D --- Imaging, Three Dimensional --- Imagings, 3-D --- Imagings, Computer-Assisted Three-Dimensional --- Imagings, Computer-Generated 3D --- Imagings, Three-Dimensional --- Three Dimensional Image --- Three Dimensional Imaging, Computer Generated --- Three-Dimensional Images --- Three-Dimensional Imaging --- Three-Dimensional Imaging, Computer-Assisted --- Three-Dimensional Imagings --- Three-Dimensional Imagings, Computer-Assisted --- Computer-Assisted Radiation Therapy --- Computer-Assisted Radiotherapy --- Radiation Therapy, Computer-Assisted --- Computer Assisted Radiation Therapy --- Computer Assisted Radiotherapy --- Computer-Assisted Radiation Therapies --- Computer-Assisted Radiotherapies --- Radiation Therapies, Computer-Assisted --- Radiation Therapy, Computer Assisted --- Radiotherapies, Computer-Assisted --- Radiotherapy, Computer Assisted --- Therapies, Computer-Assisted Radiation --- Therapy, Computer-Assisted Radiation --- Concept, Mathematical --- Concepts, Mathematical --- Mathematical Concept --- Computer-Assisted Protocol-Directed Therapy --- Therapy, Computer-Assisted Protocol-Directed --- Computer-Assisted Therapy --- Protocol-Directed Therapy, Computer-Assisted --- Computer Assisted Protocol Directed Therapy --- Computer Assisted Therapy --- Computer-Assisted Protocol-Directed Therapies --- Computer-Assisted Therapies --- Protocol Directed Therapy, Computer Assisted --- Protocol-Directed Therapies, Computer-Assisted --- Therapies, Computer-Assisted --- Therapies, Computer-Assisted Protocol-Directed --- Therapy, Computer Assisted --- Therapy, Computer Assisted Protocol Directed --- Imaging, Diagnostic --- Imaging, Medical --- Medical Imaging --- Computer-Assisted Diagnosis --- Computer Assisted Diagnosis --- Computer-Assisted Diagnoses --- Diagnoses, Computer-Assisted --- Diagnosis, Computer Assisted --- Design, Epidemiologic Research --- Designs, Epidemiologic Research --- Epidemiologic Research Designs --- Epidemiological Research Design --- Research Design, Epidemiologic --- Research Designs, Epidemiologic --- Design, Epidemiological Research --- Designs, Epidemiological Research --- Epidemiological Research Designs --- Research Design, Epidemiological --- Research Designs, Epidemiological --- Area Analysis --- Correlation Studies --- Correlation Study --- Correlation of Data --- Data Analysis --- Estimation Technics --- Estimation Techniques --- Indirect Estimation Technics --- Indirect Estimation Techniques --- Multiple Classification Analysis --- Service Statistics --- Statistical Study --- Statistics, Service --- Tables and Charts as Topic --- Analyses, Area --- Analyses, Data --- Analyses, Multiple Classification --- Analysis, Area --- Analysis, Data --- Analysis, Multiple Classification --- Area Analyses --- Classification Analyses, Multiple --- Classification Analysis, Multiple --- Data Analyses --- Data Correlation --- Data Correlations --- Estimation Technic --- Estimation Technic, Indirect --- Estimation Technics, Indirect --- Estimation Technique --- Estimation Technique, Indirect --- Estimation Techniques, Indirect --- Indirect Estimation Technic --- Indirect Estimation Technique --- Multiple Classification Analyses --- Statistical Studies --- Studies, Correlation --- Studies, Statistical --- Study, Correlation --- Study, Statistical --- Technic, Estimation --- Technic, Indirect Estimation --- Technics, Estimation --- Technics, Indirect Estimation --- Technique, Estimation --- Technique, Indirect Estimation --- Techniques, Estimation --- Techniques, Indirect Estimation --- CAT Scan, X Ray --- CT X Ray --- Computed Tomography, X-Ray --- Computed X Ray Tomography --- Computerized Tomography, X Ray --- Electron Beam Tomography --- Tomography, X Ray Computed --- Tomography, X-Ray Computer Assisted --- Tomography, X-Ray Computerized --- Tomography, X-Ray Computerized Axial --- Tomography, Xray Computed --- X Ray Computerized Tomography --- X Ray Tomography, Computed --- X-Ray Computer Assisted Tomography --- X-Ray Computerized Axial Tomography --- CAT Scan, X-Ray --- CT Scan, X-Ray --- Cine-CT --- Computerized Tomography, X-Ray --- Electron Beam Computed Tomography --- Tomodensitometry --- Tomography, Transmission Computed --- X-Ray Tomography, Computed --- Beam Tomography, Electron --- CAT Scans, X-Ray --- CT Scan, X Ray --- CT Scans, X-Ray --- CT X Rays --- Cine CT --- Computed Tomography, Transmission --- Computed Tomography, X Ray --- Computed Tomography, Xray --- Computed X-Ray Tomography --- Scan, X-Ray CAT --- Scan, X-Ray CT --- Scans, X-Ray CAT --- Scans, X-Ray CT --- Tomographies, Computed X-Ray --- Tomography, Computed X-Ray --- Tomography, Electron Beam --- Tomography, X Ray Computer Assisted --- Tomography, X Ray Computerized --- Tomography, X Ray Computerized Axial --- Transmission Computed Tomography --- X Ray Computer Assisted Tomography --- X Ray Computerized Axial Tomography --- X Ray, CT --- X Rays, CT --- X-Ray CAT Scan --- X-Ray CAT Scans --- X-Ray CT Scan --- X-Ray CT Scans --- X-Ray Computed Tomography --- X-Ray Computerized Tomography --- Xray Computed Tomography --- Breathing --- physiology --- therapy --- methods --- diagnosis --- 4D CAT Scan --- 4D CT --- 4D CT Scan --- 4D Computed Tomography --- Four-Dimensional CAT Scan --- Four-Dimensional CT --- Four-Dimensional CT Scan --- 4D CAT Scans --- 4D CT Scans --- CAT Scan, 4D --- CAT Scan, Four-Dimensional --- CAT Scans, 4D --- CAT Scans, Four-Dimensional --- CT Scan, 4D --- CT Scan, Four-Dimensional --- CT Scans, 4D --- CT Scans, Four-Dimensional --- CT, Four-Dimensional --- CTs, Four-Dimensional --- Computed Tomography, 4D --- Computed Tomography, Four-Dimensional --- Four Dimensional CAT Scan --- Four Dimensional CT --- Four Dimensional CT Scan --- Four Dimensional Computed Tomography --- Four-Dimensional CAT Scans --- Four-Dimensional CT Scans --- Scan, 4D CAT --- Scan, 4D CT --- Scan, Four-Dimensional CAT --- Scan, Four-Dimensional CT --- Scans, 4D CAT --- Scans, 4D CT --- Scans, Four-Dimensional CAT --- Scans, Four-Dimensional CT --- Tomography, Four-Dimensional Computed --- Physics. --- Nuclear medicine. --- Respiratory organs --- Medical physics. --- Radiation. --- Biomedical engineering. --- Medical and Radiation Physics. --- Biological and Medical Physics, Biophysics. --- Pneumology/Respiratory System. --- Biomedical Engineering. --- Nuclear Medicine. --- Diseases. --- Pneumology. --- Biomedical Engineering and Bioengineering. --- Clinical engineering --- Medical engineering --- Bioengineering --- Biophysics --- Engineering --- Health physics --- Health radiation physics --- Medical radiation physics --- Radiotherapy physics --- Radiation therapy physics --- Atomic medicine --- Radioisotopes in medicine --- Medical radiology --- Radioactive tracers --- Radioactivity --- Physiological effect --- Biophysics. --- Biological physics. --- Respiratory organs—Diseases. --- Biological physics --- Biology --- Medical sciences --- Radiology