Download or read book Deep Learning Versus Iterative Reconstruction for CT Pulmonary Angiography in the Emergency Setting written by Marc Lenfant and published by . This book was released on 2021 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'objectif de cette étude est d'évaluer un nouvel algorithme de reconstruction tomodensitométrique basé sur le Deep Learning (DLR) et de le comparer en termes de qualité d'images et de réduction de dose d'irradiation aux reconstructions itératives classiques (hybrid-IR). Cent quarante patients consécutifs adressés pour la réalisation d'un angioscanner thoracique pour suspicion d'embolie pulmonaire ont été inclus. Cinquante patients (50%) ont bénéficié d'un scanner avec DLR et cinquante patients d'un scanner avec hybrid-IR. La qualité d'image a été évaluée quantitativement (niveau de bruit ; rapports signal-sur-bruit, SNR et contraste-sur-bruit, CNR) et qualitativement sur une échelle à 5-points. Les paramètres d'irradiations ont été recueillis (CT dose index, CTDIvol ; et le produit dose longueur, DLP). Au total, 93 patients ont été analysés : 45 avec DLR et 48 avec hybrid-IR. Le bruit était significativement réduit et les SNR (24,4±5,9 vs. 20,7±6,1) et CNR (21,8± 5,8 vs. 18,6±6,0) étaient significativement augmentés avec les reconstructions DLR (p
Download or read book Computed Tomography E Book written by Euclid Seeram and published by Elsevier Health Sciences. This book was released on 2022-06-16 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Build the foundation necessary for the practice of CT scanning with Computed Tomography: Physical Principles, Patient Care, Clinical Applications, and Quality Control, 5th Edition. Written to meet the varied requirements of radiography students and practitioners, this two-color text provides comprehensive coverage of the physical principles of computed tomography and its clinical applications. The clear, straightforward approach is designed to improve your understanding of sectional anatomic images as they relate to computed tomography and facilitate communication between CT technologists and other medical personnel. - Chapter outlines and chapter review questions help you focus your study time and master content. - NEW! Three additional chapters reflect the latest industry CT standards in imaging: Radiation Awareness and Safety Campaigns in Computed Tomography, Patient Care Considerations, and Artificial Intelligence: An Overview of Applications in Health and Medical Imaging. - UPDATED! More than 509 photos and line drawings visually clarify key concepts. - UPDATED! The latest information keeps you up to date on advances in volume CT scanning; CT fluoroscopy; and multislice applications like 3-D imaging, CT angiography, and virtual reality imaging (endoscopy).
Download or read book Iterative Reconstruction in Single Source Dual energy CT Pulmonary Angiography Is it Sufficient to Achieve a Radiation Dose as Low as State of the art Single energy CTPA written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spectral Photon Counting Computed Tomography written by Katsuyuki Taguchi and published by CRC Press. This book was released on 2020-07-14 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectral, Photon Counting Computed Tomography is a comprehensive cover of the latest developments in the most prevalent imaging modality (x-ray computed tomography (CT)) in its latest incarnation: Spectral, Dual-Energy, and Photon Counting CT. Disadvantages of the conventional single-energy technique used by CT technology are that different materials cannot be distinguished and that the noise is larger. To address these problems, a novel spectral CT concept has been proposed. Spectral Dual-Energy CT (DE-CT) acquires two sets of spectral data, and Spectral Photon Counting CT (PC-CT) detects energy of x-ray photons to reveal additional material information of objects by using novel energy-sensitive, photon-counting detectors. The K-edge imaging may be a gateway for functional or molecular CT. The book covers detectors and electronics, image reconstruction methods, image quality assessments, a simulation tool, nanoparticle contrast agents, and clinical applications for spectral CT.
Download or read book Impact of a low dose Triple Rule Out CT Angiography using iterative reconstruction in emergency department on non prepared patients with acute chest pain written by Salim Si-Mohamed and published by . This book was released on 2016 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objectif. Comparer la dose efficace des rayons X, la qualité d'image et la valeur diagnostique du Triple Rule Out angioscanner (TRO-CTA) à basse dose (100 kVp) en combinaison avec la reconstruction itérative de type sinogram affirmed iterative reconstruction (SAFI RE) par rapport à uneTRO-CTA à dose standard (120 kVp) en combinaison avec la rétroprojection filtrée chez des patients adressés aux urgences pour douleur thoracique. Matériels/Méthodes.147 patients consécutifs d'un service d'urgences d'un hôpital universitaire entre 2015 et 2016 référés pour une douleur thoracique ont été évalués par TRO-CTA. Les patients étaient assignés de manière randomisée à un protocole standard dose à 120 kVp (n=50, 66.6 ± 19.0 ans, 66% homme) ou basse dose à 100 kVp (n=97, 62.8 ± 17.9 ans, 67% homme). Le bruit dans l'image, l'atténuation dans les vaisseaux, les rapports signal-à-bruit et contraste-à-bruit dans 5 vaisseaux thoraciques majeurs ont été mésurés pour une analyse objective et subjective. Les diagnostics et confiance diagnostique ont été évalués par deux radiologues. Résultats. La dose efficace a diminué significativement de 34% dans le groupe basse dose (5.7 ± 2.7 vs. 8.6 ± 6.1 mSv; p
Download or read book Ordering CT Pulmonary Angiography to Exclude Pulmonary Embolism written by Janet Heidi Emefa Akosua Buatsi Reber and published by . This book was released on 2012 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Clinical Imaging Physics written by Ehsan Samei and published by John Wiley & Sons. This book was released on 2020-06-30 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clinical Medical Imaging Physics: Current and Emerging Practice is the first text of its kind—a comprehensive reference work covering all imaging modalities in use in clinical medicine today. Destined to become a classic in the field, this book provides state-of-practice descriptions for each imaging modality, followed by special sections on new and emerging applications, technologies, and practices. Authored by luminaries in the field of medical physics, this resource is a sophisticated, one-volume handbook to a fast-advancing field that is becoming ever more central to contemporary clinical medicine. Summarizes the current state of clinical medical imaging physics in one volume, with a focus on emerging technologies and applications Provides comprehensive coverage of all key clinical imaging modalities, taking into account the new realities in healthcare practice Features a strong focus on clinical application of principles and technology, now and in the future Contains authoritative text compiled by world-renowned editors and contributors responsible for guiding the development of the field Practicing radiologists and medical physicists will appreciate Clinical Medical Imaging Physics as a peerless everyday reference work. Additionally, graduate students and residents in medical physics and radiology will find this book essential as they study for their board exams.
Download or read book Computed Tomography written by Euclid Seeram and published by Saunders. This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiologic technologists play an important role in the care and management of patients undergoing advanced imaging procedures. This new edition provides the up-to-date information and thorough coverage you need to understand the physical principles of computed tomography (CT) and safely produce high-quality images. You'll gain valuable knowledge about the practice of CT scanning, effective communication with other medical personnel, and sectional anatomic images as they relate to CT. Features a chapter devoted to quality control testing of CT scanners (both spiral CT and conventional scan-and-stop), helping you achieve and maintain high quality control standards. Provides the latest information on: advances in volume CT scanning; CT fluoroscopy; multi-slice spiral/helical CT; and multi-slice applications such as 3-D imaging, CT angiography, and virtual reality imaging (endoscopy)--all with excellent coverage of state-of-the-art principles, instrumentation, clinical applications and quality control. Two new chapters cover recent developments and important principles of multislice CT and PET/CT, giving you in-depth coverage of these quickly emerging aspects of CT.
Download or read book Pulmonary Functional Imaging written by Yoshiharu Ohno and published by Springer Nature. This book was released on 2020-12-11 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the basics of pulmonary functional imaging using new CT and MR techniques and describes the clinical applications of these techniques in detail. The intention is to equip readers with a full understanding of pulmonary functional imaging that will allow optimal application of all relevant techniques in the assessment of a variety of diseases, including COPD, asthma, cystic fibrosis, pulmonary thromboembolism, pulmonary hypertension, lung cancer and pulmonary nodule. Pulmonary functional imaging has been promoted as a research and diagnostic tool that has the capability to overcome the limitations of morphological assessments as well as functional evaluation based on traditional nuclear medicine studies. The recent advances in CT and MRI and in medical image processing and analysis have given further impetus to pulmonary functional imaging and provide the basis for future expansion of its use in clinical applications. In documenting the utility of state-of-the-art pulmonary functional imaging in diagnostic radiology and pulmonary medicine, this book will be of high value for chest radiologists, pulmonologists, pulmonary surgeons, and radiation technologists.
Download or read book MDCT A Practical Approach written by S. Saini and published by Springer Science & Business Media. This book was released on 2007-03-14 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes current examination techniques and advanced clinical applications of state-of-the-art multidetector computed tomography (MDCT) scanners. There are contributions from several distinguished radiologists and clinicians. Each chapter is written from a practical perspective, so that radiologists, residents, medical physicists, and radiology technologists can obtain relevant information about MDCT applications.
Download or read book Machine Learning for Medical Image Reconstruction written by Florian Knoll and published by Springer Nature. This book was released on 2019-10-24 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the Second International Workshop on Machine Learning for Medical Reconstruction, MLMIR 2019, held in conjunction with MICCAI 2019, in Shenzhen, China, in October 2019. The 24 full papers presented were carefully reviewed and selected from 32 submissions. The papers are organized in the following topical sections: deep learning for magnetic resonance imaging; deep learning for computed tomography; and deep learning for general image reconstruction.
Download or read book Cardiovascular Computed Tomography written by James Stirrup and published by Oxford University Press, USA. This book was released on 2020-01-02 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent years have seen a marked increase in cardiovascular computed tomography (CT) imaging, with the technique now integrated into many imaging guidelines, such as those published by ESC and NICE. Rapid clinical and technological progress has created a need for guidance on the practical aspects of CT image acquisition, analysis and interpretation. The Oxford Specialist Handbook of Cardiovascular CT, now revised for the second edition by practising international experts with many years of hands-on experience, is designed to fulfil this need. The Handbook is a practical guide on performing, analysing and interpreting cardiovascular CT scans, covering all aspects from patient safety to optimal image acquisition to differential diagnoses of tricky images. It takes an international approach to both accreditation and certification, highlighting British, European, and American examinations and courses. The format is designed to be accessible and is laid out in easy to navigate sections. It is meant as a quick-reference guide, to live near the CT scanner, workstation, or on the office shelf. The Handbook is aimed at all cardiovascular CT users (Cardiologists, Radiologists and Radiographers), particularly those new to cardiovascular CT, although even the advanced user should find useful tips and tricks within.
Download or read book Gastrointestinal Imaging written by Angela D. Levy and published by Rotations in Radiology. This book was released on 2015 with total page 761 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a comprehensive review of gastrointestinal pathologies commonly encountered by practising radiologists and residents in training. The chapters are organised by organ system and include the pharynx and esophagus, stomach, small bowel, appendix, colon, anorectum, liver, gallbladder, bile ducts, pancreas, spleen, peritoneum, mesentery, and abdominal wall, and one on multisystem disorders. The book offers a guided approach to imaging diagnosis with examples of all imaging modalities complimented by the basics of technique and interpretation and the nuances necessary to reach the best diagnosis.
Download or read book Medical Imaging Informatics written by Alex A.T. Bui and published by Springer Science & Business Media. This book was released on 2009-12-01 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Medical Imaging Informatics provides an overview of this growing discipline, which stems from an intersection of biomedical informatics, medical imaging, computer science and medicine. Supporting two complementary views, this volume explores the fundamental technologies and algorithms that comprise this field, as well as the application of medical imaging informatics to subsequently improve healthcare research. Clearly written in a four part structure, this introduction follows natural healthcare processes, illustrating the roles of data collection and standardization, context extraction and modeling, and medical decision making tools and applications. Medical Imaging Informatics identifies core concepts within the field, explores research challenges that drive development, and includes current state-of-the-art methods and strategies.
Download or read book ICRP Publication 135 written by ICRP, and published by SAGE Publications Limited. This book was released on 2017-10-29 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CT Scanning written by Karupppasamy Subburaj and published by BoD – Books on Demand. This book was released on 2011-10-03 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its introduction in 1972, X-ray computed tomography (CT) has evolved into an essential diagnostic imaging tool for a continually increasing variety of clinical applications. The goal of this book was not simply to summarize currently available CT imaging techniques but also to provide clinical perspectives, advances in hybrid technologies, new applications other than medicine and an outlook on future developments. Major experts in this growing field contributed to this book, which is geared to radiologists, orthopedic surgeons, engineers, and clinical and basic researchers. We believe that CT scanning is an effective and essential tools in treatment planning, basic understanding of physiology, and and tackling the ever-increasing challenge of diagnosis in our society.
Download or read book IR Playbook written by Nicole A. Keefe and published by Springer Nature. This book was released on 2024 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fully updated new edition is a comprehensive guide to interventional radiology (IR) for medical students, residents, early career attendings, nurse practitioners and physician assistants. The IR Playbook includes procedures, new and updated data, and new images, to stay on the cutting edge of IR. As a specialty, IR is constantly changing and evolving to apply newer technologies and techniques to a breadth of disease pathologies. This book addresses the growing need for a reference for trainees and early career professionals to gain a solid foundation. Let this book serve as your only resource from the first day you find out about IR to the day you take your certifying exam. One and done. The textbook is divided into two main sections, with many images and key point boxes throughout that offer high-yield pearls along with the specific How To's necessary for practice. The first section is designed to give readers an introduction to IR, including radiation safety, commonly used devices, patient care, and anatomy. The second portion is divided by procedure. These chapters cover pathophysiology, indications for treatment, as well as alternative treatments before delving into interventional therapy. This new edition has been fully updated throughout including several brand-new procedures and divided chapters to allow a more in depth look at several disease pathologies. IR Playbook gives medical students, residents, and trainees a full perspective of interventional radiology.
