Download or read book Quality Control and Artefacts in Magnetic Resonance Imaging written by Donald McRobbie and published by Institute of Physics and Engineering in Medicine. This book was released on 2017-01-31 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Quality Control and Artefacts in Magnetic Resonance Imaging is an authoritative, comprehensive and practical guide for all medical imaging professionals with an interest in evaluating and assuring image quality and scanner performance in MRI. Written by leading UK experts, the report is a major revision of IPEM Report 80: Quality Control in Magnetic Resonance Imaging. The report is in two parts. Part I deals with quality control, with chapters on test object design and test materials, signal parameter measurement (signal-to-noise ratio, ghosting, etc.), geometric parameters (resolution, distortion), slice parameters (position, width and profile), relaxometry and contrast. For each parameter a consistent and systematic structure provides a literature review with reference to current international standards, parameter definition, description of test methods, practical guidance including frequency of measurement, analysis and interpretation of results, and pitfalls. A specialist QC chapter is a new and unique feature providing guidance relating to specific clinical and research techniques: field mapping, diffusion, BOLD fMRI, voxel-based morphometry, dynamic contrast-enhanced MRI, quantitative velocity mapping, spectroscopy, and ultra-high field MRI. Part II provides a comprehensive and exhaustive encyclopaedia of MRI artefacts both common and rare arising from technical limitations and faults, patient and organ motion, tissue properties, intrinsic MR physics, and reconstruction limitations. Pictorial examples of each artefact from clinical or phantom images are provided along with a detailed explanation of the causes and advice on reducing, avoiding or removing the artefact. A summary table of artefact appearance, causes and remediation will enable readers to diagnose and solve their own artefact problems. The practical nature of the report is underpinned by academic rigour with 269 references and a comprehensive index. Quality Control and Artefacts in Magnetic Resonance is an essential reference for all MRI departments and MRI professionals.
Download or read book Magnetic Resonance Imaging MRI Quality Control Manual written by and published by . This book was released on 2001 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quality Assurance and Image Artifacts in Magnetic Resonance Imaging written by R. James Knowles and published by . This book was released on 1987-12-01 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book MRI from Picture to Proton written by Donald W. McRobbie and published by Cambridge University Press. This book was released on 2017-04-13 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: MR is a powerful modality. At its most advanced, it can be used not just to image anatomy and pathology, but to investigate organ function, to probe in vivo chemistry, and even to visualise the brain thinking. However, clinicians, technologists and scientists struggle with the study of the subject. The result is sometimes an obscurity of understanding, or a dilution of scientific truth, resulting in misconceptions. This is why MRI from Picture to Proton has achieved its reputation for practical clarity. MR is introduced as a tool, with coverage starting from the images, equipment and scanning protocols and traced back towards the underlying physics theory. With new content on quantitative MRI, MR safety, multi-band excitation, Dixon imaging, MR elastography and advanced pulse sequences, and with additional supportive materials available on the book's website, this new edition is completely revised and updated to reflect the best use of modern MR technology.
Download or read book Quality Assurance Methods and Phantoms for Magnetic Resonance Imaging written by Nuclear Magnetic Resonance Committee Task Group No.1 and published by American Institute of Physics. This book was released on 1998-03-31 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Texture Analysis for Magnetic Resonance Imaging written by Milan Hájek and published by Texture Analysis Magn Resona. This book was released on 2006 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quality Control in Magnetic Resonance Imaging written by Richard A. Lerski and published by . This book was released on 1998 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Artifacts in Magnetic Resonance Imaging written by R. Mark Henkelman and published by . This book was released on 1987 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reduction of Artifacts in Functional Magnetic Resonance Imaging written by Louai Al-Dayeh and published by . This book was released on 1999 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Quality Assurance in Magnetic Resonance Imaging written by Roy John Hughes and published by . This book was released on 1989 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnetic Resonance Imaging MRI Quality Control Manual written by American College of Radiology. Committee on Quality Assurance in MRI. and published by . This book was released on 2004 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnetic Resonance Imaging MRI Quality Control Manual written by and published by . This book was released on 2015 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Image Artifact Reduction for Fast Magnetic Resonance Imaging written by Joseph Yitan Cheng and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic resonance imaging (MRI) is a rich source for diagnostic information. It has the ability to obtain excellent soft-tissue contrast at a very high spatial resolution. The imaging process of this modality can be conveniently described as a linear system with Fourier encoding. However, to increase flexibility and robustness, imaging techniques are used that cause basic assumptions of this model to fall apart. As a result, image artifacts arise, decreasing the clinical quality of the scans. More sophisticated methods that take these effects into account must be considered. Many of the errors reside in both the spatial and frequency domain, so simple linear solutions do not suffice. Two sources of image artifacts are investigated: (1) concomitant gradient field and field inhomogeneity and (2) nonrigid motion in free-breathing acquisitions. Each image-artifact source has specific effects which are dependent on the application. For real-time cardiac imaging with spiral k-space trajectories, concomitant gradient field and field inhomogeneity errors result in image blurring. Two fast and practical solutions are developed and applied to real-time cardiac studies and high-resolution cardiac studies. MRI is also a compelling choice for imaging pediatric patients as they are highly susceptible to risks of ionizing radiation of computed tomography and nuclear scintigraphy studies. However, this imaging modality is highly sensitive to motion. The motion can result in destructive image artifacts. To enable free-breathing volumetric exams, novel data acquisition strategies and image reconstruction techniques are developed to compensate for nonrigid respiratory motion. These methods are demonstrated in select pediatric patient studies. Image artifacts fromrespiratory motion are reduced from the free-breathing abdominal scans.
Download or read book Artifact Control in Magnetic Resonance Spectroscopic Imaging written by Thomas Alexander Kirchner 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 Magnetic Resonance Quality Assurance for Image Standardization written by Jeffrey A. Fiedler and published by . This book was released on 1989 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acceptance Testing of Magnetic Resonance Imaging Systems written by and published by . This book was released on 1998-06-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quantitative Image Quality Evaluation of Fast Magnetic Resonance Imaging written by Donglai Huo and published by . This book was released on 2007 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
