Download or read book Comparison of Object Detection and Image Quality Between Conventional Digital Mammography and Digital Breast Tomosynthesis Through Contrast Measurements and Phantom Image Evaluation written by Angela E. Leek and published by . This book was released on 2014 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advancements in digital detector technology over the past decade have facilitated the transition of mammography image acquisition from film screen to full field digital applications. Nearly 90% of the mammography performed in the United States utilizes digital imaging technologies. The ability to capture the image information in an electronic format has allowed for three-dimensional image reconstruction techniques to be applied to digital mammography images by employing tomosynthesis acquisition techniques. The ability for digital breast tomosynthesis to represent the breast tissue in a three-dimensional format has significant applications in clinical mammography to overcome the inherent limitation of overlapping tissue in current 2D mammography applications. The quality control requirements for mammography systems are based from regulations initially implemented through the Mammography Quality Standards Act of 1992. These regulations have been modified as digital mammography has developed and currently require that imaging modalities other than film-screen adhere to the quality control program outlined by the manufacturer of the equipment. A test to measure the signal to noise ratio (SNR) and signal difference to noise ratio (SdNR) is routinely used in two-dimensional digital mammography quality control programs to assess the ability of the system to adequately represent objects within the breast tissue structures. The purpose of this study was to understand the differences in object detection between two-dimensional (2D) mammography and digital breast tomosynthesis (DBT) applications. This study begins by examining potential variations in SNR and SdNR measurements of 2D image acquisitions over increasing simulated breast thicknesses. These measurements were then compared to SNR and SdNR measurements obtained for both projection images and reconstruction slices generated in the DBT modality using the same simulated breast thickness parameters as those acquired in the 2D modality. Human reviewer scores of contrast detail phantom images acquired under corresponding parameters were used to determine whether any measured differences in SNR and SdNR values correlated with changes in the ability of a human observer to visually perceive known phantom image objects. As the thickness of the attenuating material increased, differences were noted in the SNR and SdNR measurements as well as the reviewer scores when 2D and DBT results were compared. This study found that the measured SdNR decreased as the BR material thicknesses increased for both the 2D and DBT modalities; however, DBT demonstrated a greater change than was noted for 2D. Reviewer scores also indicated a difference in the ability to visualize the smallest phantom image objects between the two modalities. The scope of this study does not provide for a clear correlation between the decrease in SdNR and reduced reviewer visualization of test objects. However, the noted differences between 2D and DBT in SNR/SdNR and reviewer scores support the need for consideration of object detection parameters for each modality separately.
Download or read book Digital Mammography written by Ulrich Bick and published by Springer Science & Business Media. This book was released on 2010-03-11 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Digital Radiography has been ? rmly established in diagnostic radiology during the last decade. Because of the special requirements of high contrast and spatial resolution needed for roentgen mammography, it took some more time to develop digital m- mography as a routine radiological tool. Recent technological progress in detector and screen design as well as increased ex- rience with computer applications for image processing have now enabled Digital Mammography to become a mature modality that opens new perspectives for the diag- sis of breast diseases. The editors of this timely new volume Prof. Dr. U. Bick and Dr. F. Diekmann, both well-known international leaders in breast imaging, have for many years been very active in the frontiers of theoretical and translational clinical research, needed to bring digital mammography ? nally into the sphere of daily clinical radiology. I am very much indebted to the editors as well as to the other internationally rec- nized experts in the ? eld for their outstanding state of the art contributions to this v- ume. It is indeed an excellent handbook that covers in depth all aspects of Digital Mammography and thus further enriches our book series Medical Radiology. The highly informative text as well as the numerous well-chosen superb illustrations will enable certi? ed radiologists as well as radiologists in training to deepen their knowledge in modern breast imaging.
Download or read book Digital Breast Tomosynthesis written by Alberto Tagliafico and published by Springer. This book was released on 2016-05-03 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive description of the screening and clinical applications of digital breast tomosynthesis (DBT) and offers straightforward, clear guidance on use of the technique. Informative clinical cases are presented to illustrate how to take advantage of DBT in clinical practice. The importance of DBT as a diagnostic tool for both screening and diagnosis is increasing rapidly. DBT improves upon mammography by depicting breast tissue on a video clip made of cross‐sectional images reconstructed in correspondence with their mammographic planes of acquisition. DBT results in markedly reduced summation of overlapping breast tissue and offers the potential to improve mammographic breast cancer surveillance and diagnosis. This book will be an excellent practical teaching guide for beginners and a useful reference for more experienced radiologists.
Download or read book Digital Mammography written by Etta D. Pisano and published by Lippincott Williams & Wilkins. This book was released on 2004 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bogen er en grundlæggende lærebog om digital mammografi, hvori digital mammografi og traditionel mammografi også sammenlignes i forhold til screening, diagnoser og radiografisk billedteknik. Der er en komplet billedsamling af cases indenfor digital mammografi.
Download or read book Contrast Enhanced Mammography written by Marc Lobbes and published by Springer. This book was released on 2019-04-29 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive guide to contrast-enhanced mammography (CEM), a novel advanced mammography technique using dual-energy mammography in combination with intravenous contrast administration in order to increase the diagnostic performance of digital mammography. Readers will find helpful information on the principles of CEM and indications for the technique. Detailed attention is devoted to image interpretation, with presentation of case examples and highlighting of pitfalls and artifacts. Other topics to be addressed include the establishment of a CEM program, the comparative merits of CEM and MRI, and the roles of CEM in screening populations and monitoring of response to neoadjuvant chemotherapy. CEM became commercially available in 2011 and is increasingly being used in clinical practice owing to its superiority over full-field digital mammography. This book will be an ideal source of knowledge and guidance for all who wish to start using the technique or to learn more about it.
Download or read book Physics of Mammographic Imaging written by Mia K. Markey and published by CRC Press. This book was released on 2012-11-09 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the increasing number of digital mammograms and the advent of new kinds of three-dimensional x-ray and other forms of medical imaging, mammography is undergoing a dramatic change. To meet their responsibilities, medical physicists must constantly renew their knowledge of advances in medical imaging or radiation therapy, and must be prepared to function at the intersection of these two fields. Physics of Mammographic Imaging gives an overview on the current role and future potential of new alternatives to mammography in the context of clinical need, complementary approaches, and ongoing research. This book provides comprehensive coverage on the fundamentals of image formation, image interpretation, analysis, and modeling. It discusses the use of mammographic imaging in the detection, diagnosis, treatment planning, and monitoring of breast cancer. Expert authors give a balanced summary of core topics such as digital mammography, contrast-enhanced mammography, stereomammography, breast tomosynthesis, and breast CT. The book highlights the use of mammographic imaging with complementary breast imaging modalities such as ultrasound, MRI, and nuclear medicine techniques. It discusses critical issues such as computer-aided diagnosis, perception, and quality assurance. This is an exciting time in the development of medical imaging, with many new technologies poised to make a substantial impact on breast cancer care. This book will help researchers and students get up to speed on crucial developments and contribute to future advances in the field.
Download or read book Breast Imaging written by Andrew D.A. Maidment and published by Springer. This book was released on 2012-07-13 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 11th International Workshop on Digital Mammography, IWDM 2012, held in Philadelphia, PA, USA, in July 2012. The 42 revised full papers and 58 revised poster papers presented were carefully reviewed and selected from numerous initial submissions. The papers are organized in topical sections on contrast-enhancing imaging, digital mammography methods, tomosynthesis system design, tomosynthesis - image quality and dose, clinical tomosynthesis, functional breast imaging, breast computed tomography, computer-aided diagnosis and image processing, tomosynthesis reconstruction, and breast density.
Download or read book Tomographic Image Reconstruction written by Shiya Xu and published by . This book was released on 2014 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional 2D mammography was the most effective approach to detecting early stage breast cancer in the past decades of years. Tomosynthetic breast imaging is a potentially more valuable 3D technique for breast cancer detection. The limitations of current tomosynthesis systems include a longer scanning time than a conventional digital X-ray modality and a low spatial resolution due to the movement of the single X-ray source. Dr.Otto Zhou's group proposed the concept of stationary digital breast tomosynthesis (s-DBT) using a Carbon Nano-Tube (CNT) based X-ray source array. Instead of mechanically moving a single X-ray tube, s-DBT applies a stationary X-ray source array, which generates X-ray beams from different view angles by electronically activating the individual source prepositioned at the corresponding view angle, therefore eliminating the focal spot motion blurring from sources. The scanning speed is determined only by the detector readout time and the number of sources regardless of the angular coverage spans, such that the blur from patient's motion can be reduced due to the quick scan. S-DBT is potentially a promising modality to improve the early breast cancer detection by providing decent image quality with fast scan and low radiation dose. DBT system acquires a limited number of noisy 2D projections over a limited angular range and then mathematically reconstructs a 3D breast. 3D reconstruction is faced with the challenges of cone-beam and flat-panel geometry, highly incomplete sampling and huge reconstructed volume. In this research, we investigated several representative reconstruction methods such as Filtered backprojection method (FBP), Simultaneous algebraic reconstruction technique (SART) and Maximum likelihood (ML). We also compared our proposed statistical iterative reconstruction (IR) with particular prior and computational technique to these representative methods. Of all available reconstruction methods in this research, our proposed statistical IR appears particularly promising since it provides the flexibility of accurate physical noise modeling and geometric system description. In the following chapters, we present multiple key techniques of statistical IR to tomosynthesis imaging data to demonstrate significant image quality improvement over conventional techniques. These techniques include the physical modeling with a local voxel-pair based prior with the flexibility in its parameters to fine-tune image quality, the pre-computed parameter κ incorporated with the prior to remove the data dependence and to achieve a predictable resolution property, an effective ray-driven technique to compute the forward and backprojection and an over-sampled ray-driven method to perform high resolution reconstruction with a practical region of interest (ROI) technique. In addition, to solve the estimation problem with a fast computation, we also present a semi-quantitative method to optimize the relaxation parameter in a relaxed order-subsets framework and an optimization transfer based algorithm framework which potentially allows less iterations to achieve an acceptable convergence. The phantom data is acquired with the s-DBT prototype system to assess the performance of these particular techniques and compare our proposed method to those representatives. The value of IR is demonstrated in improving the detectability of low contrast and tiny micro-calcification, in reducing cross plane artifacts, in improving resolution and lowering noise in reconstructed images. In particular, noise power spectrum analysis (NPS) indicates a superior noise spectral property of our proposed statistical IR, especially in the high frequency range. With the decent noise property, statistical IR also provides a remarkable reconstruction MTF in general and in different areas within a focus plane. Although computational load remains a significant challenge for practical development, combined with the advancing computational techniques such as graphic computing, the superior image quality provided by statistical IR will be realized to benefit the diagnostics in real clinical applications.
Download or read book Contrast Enhanced Digital Mammography CEDM written by Jacopo Nori and published by Springer. This book was released on 2018-09-25 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive, practical resource entirely devoted to Contrast-Enhanced Digital Mammography (CEDM), a state-of-the-art technique that has emerged as a valuable addition to conventional imaging modalities in the detection of primary and recurrent breast cancer, and as an important preoperative staging tool for women with breast cancer. CEDM is a relatively new breast imaging technique based on dual energy acquisition, combining mammography with iodine-based contrast agents to display contrast uptake in breast lesions. It improves the sensitivity and specificity of breast cancer detection by providing higher foci to breast-gland contrast and better lesion delineation than digital mammography. Preliminary results suggest that CEDM is comparable to breast MRI for evaluating the extent and size of lesions and detecting multifocal lesions, and thus has the potential to become a readily available, fast and cost-effective examination. With a focus on the basic imaging principles of CEDM, this book takes a practical approach to breast imaging. Drawing on the editors’ and authors’ practical experience, it guides the reader through the basics of CEDM, making it especially accessible for beginners. By presenting the key aspects of CEDM in a straightforward manner and supported by clear images, the book represents a valuable guide for all practicing radiologists, in particular those who perform breast imaging and have recently incorporated or plan to incorporate CEDM into their diagnostic arsenal.
Download or read book Breast Tomosynthesis E Book written by Liane E Philpotts and published by Elsevier Health Sciences. This book was released on 2016-11-02 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of tomosynthesis in breast imaging is growing rapidly due to its superior ability to identify and characterize normal findings, benign lesions, and breast cancer, as well as its optimal performance with dense breast tissue. Providing unparalleled coverage of this breakthrough breast imaging modality, Breast Tomosynthesis explains how this new modality can lead to enhanced interpretation and better patient outcomes. This new reference is an indispensable guide for today's practitioner looking to keep abreast of the latest developments with correlative findings, practical interpretation tips, physics, and information on how tomosynthesis differs from conventional 2D FFDM mammography. Over 900 high-quality images offer visual guidance to effectively reading and interpreting this key imaging modality. - Includes over 900 high-quality tomosynthesis and mammography images representing the spectrum of breast imaging. - Features the latest Breast Imaging Reporting and Data System (or BI-RADS) standards updated in February 2014. - Highlights practical tips to interpreting this new modality and how it differs from 2D mammography. - Details how integration of tomosynthesis drastically changes lesion work-up and overall workflow in the department. - "Tomo Tips" boxes offer tips and pitfalls for expert clinical guidance.
Download or read book Clinical Breast Tomosynthesis written by Lonie R. Salkowski and published by Thieme. This book was released on 2017-08-03 with total page 2123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Case studies provide a stellar resource for mastering clinical breast tomosynthesis technology Digital breast tomosynthesis (DBT), popularly called "3D mammography" is a state-of-the-art breast imaging technology that provides the ability to view inside the breast, layer by layer. Advantages of DBT include elimination of superimposed tissue, improved detection of otherwise hidden lesions, and significantly higher cancer detection rates compared to conventional mammography. Although it is increasingly being implemented in imaging centers, hands-on clinical learning tools have been lacking - until now. Written by renowned breast imaging specialists, this multimedia textbook is the most definitive DBT reference available. The first section is dedicated to DBT fundamentals, including physics, reconstruction methods, acquisition parameters, and patient dose and data size considerations. The next two sections are case-based clinical practice presentations, organized by DBT screening and diagnostic components. Key Features The use of 3D breast imaging to detect and differentiate malignancies from normal and benign findings 100 case studies include pertinent clinical information, introductory images, and findings labeled on subsequent images with BI-RADS terminology Full field digital mammography and/or synthetic 2D mammogram images included in all case studies mirror what is typically encountered in DBT breast-imaging programs Clinical pearls on navigating the technology, interpreting images, making diagnoses, and decisions regarding follow-up studies Accompanying online videos further elucidate the still images This remarkable, interactive reference is a must-have for trainee and practicing radiologists and will also benefit mammography technicians. The detailed case studies and videos demonstrate the full utility of DBT as a screening and diagnostic technology in context with mammography, ultrasound, and MRI of the breast.
Download or read book Evaluation of Image Quality and Diagnostic Accuracy in Breast Tomosynthesis written by Tony Svahn and published by . This book was released on 2011 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tomosynthesis Imaging written by Ingrid Reiser and published by Taylor & Francis. This book was released on 2016-04-19 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: An innovative, three-dimensional x-ray imaging technique that enhances projection radiography by adding depth resolution, Tomosynthesis Imaging explores tomosynthesis, an emerging limited-angle tomographic imaging technology that is being considered for use in a range of clinical applications, and is currently being used for breast cancer screening
Download or read book Digital Mammography written by Joan Martí and published by Springer Science & Business Media. This book was released on 2010-06-17 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 10th International Workshop on Digital Mammography, IWDM 2010, held in Girona, Spain, in June 2010. The 46 revised full papers and 57 revised poster papers presented were carefully reviewed and selected from 141 initial submissions. The papers are organized in topical sections on CAD, image processing and analysis, breast imaging physics, physics models, clinical experiences, breast density, digital breast tomosynthesis, lesion detection, and registration.
Download or read book Atlas of Contrast Enhanced Mammography written by Jacopo Nori and published by Springer Nature. This book was released on 2021-01-04 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: This superbly illustrated atlas serves as a basic introduction to contrast-enhanced mammography (CEM), a breakthrough functional breast imaging modality, which is rapidly growing. This book is an essential guide for the latest developments with correlative findings, practical interpretation tips, physics, and information on how contrast mammography differs from conventional 2D and 3D Full Field of View digital mammography (FFDM). It includes: · over 1000 high-quality 2D, 3D and recombined contrast mammography images representing the spectrum of breast imaging · findings obtained in the full range of benign, pre-malignant and malignant conditions, including artefacts and postoperative changes, presented with high-quality illustrations from case examples · image interpretation tips using mammographic and DCE-MRI descriptors of the BI-RADS lexicon to effectively read and interpret this advanced imaging modality · practical tips to interpret this new modality and how it is used as an adjunct to 2D mammography · details on how integration of contrast-enhanced mammography drastically changes lesion work-up and overall workflow in the department · "imaging pearls" boxes offering interpretation tips for expert clinical guidance · a case on the recently introduced CEM guided biopsy procedure The book’s target audience consists of diagnostic radiologists, residents, fellows, technologists and clinicians involved in the care of breast cancer patients, including surgeons and oncologists. The goal is to provide a concise introduction to CEM and to lead to enhanced interpretation and better patient staging prior to surgery.
Download or read book State of the Art in Digital Mammographic Image Analysis written by K. W. Bowyer and published by World Scientific. This book was released on 1994 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a detailed assessment of the state of the art in automated techniques for the analysis of digital mammogram images. Topics covered include a variety of approaches for image processing and pattern recognition aimed at assisting the physician in the task of detecting tumors from evidence in mammogram images. The chapters are written by recognized experts in the field and are revised versions of papers selected from those presented at the “First International Workshop on Mammogram Image Analysis” held in San Jose as part of the 1993 Biomedical Image Processing conference.
Download or read book Digital Mammography written by Elizabeth Krupinski and published by Springer. This book was released on 2008-07-27 with total page 793 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume (5116) of Springer’s Lecture Notes in Computer Science contains the th proceedings of the 9 International Workshop on Digital Mammography (IWDM) which was held July 20 – 23, 2008 in Tucson, AZ in the USA. The IWDM meetings traditionally bring together a diverse set of researchers (physicists, mathematicians, computer scientists, engineers), clinicians (radiologists, surgeons) and representatives of industry, who are jointly committed to developing technologies to support clinicians in the early detection and subsequent patient management of breast cancer. The IWDM conference series was initiated at a 1993 meeting of the SPIE Medical Imaging Symposium in San Jose, CA, with subsequent meetings hosted every two years at sites around the world. Previous meetings were held in York, England; Chicago, IL USA; Nijmegen, Netherlands; Toronto, Canada; Bremen, Germany; Durham, NC USA and Manchester, UK. th The 9 IWDM meeting was attended by a very international group of participants, and during the two and one-half days of scientific sessions there were 70 oral presentations, 34 posters and 3 keynote addresses. The three keynote speakers discussed some of the “hot” topics in breast imaging today. Karen Lindfors spoke on “Dedicated Breast CT: Initial Clinical Experiences. ” Elizabeth Rafferty asked the question is “Breast Tomosynthesis: Ready for Prime Time?” Finally, Martin Tornai discussed “3D Multi-Modality Molecular Breast Imaging.
