Whither the life of online images?

First Published in 1991. Knowing any real city, and still more so, knowing what it is to know a city, may be as much about passive as about active experience. What we read in the field-that field of the city in all its bizarre mixture of culture and nature-is bound to determine, to some non-fictional extent, what we know of it, what we imagine it could be, what we fear it may be, or become. These essays are meant to be, albeit in their critical mode, the recountings of knowing something through something else: they are the projected imagination, through reading, of the reading by the self and/or others (a wide range of each) of a city, or cities as such, of what city-knowing or city-thinking is. The city as stage, market, and labyrinth, variously trafficked and aestheticized, dreamt and politicized, as passionately written by authors from Cicero to Kazin, from Wordsworth, Dickens, Whitman, and Woolf, to Williams, Ashbery, and Bonnefoy, is the place the essays play themselves out, through architecture and metaphor.

Cuts across perceptual psychology, art, television, film, literature, advertising, and political communication to give the reader critical insight into the holistic logic and emotional power of the images that dominate our lives.

Among medical imaging modalities, magnetic resonance imaging (MRI) stands out for its excellent soft-tissue contrast, anatomical detail, and high sensitivity for disease detection. However, as proven by the continuous and vast effort to develop new MRI techniques, limitations and open challenges remain. The primary source of contrast in MRI images are the various relaxation parameters associated with the nuclear magnetic resonance (NMR) phenomena upon which MRI is based. Although it is possible to quantify these relaxation parameters (qMRI) they are rarely used in the clinic, and radiological interpretation of images is primarily based upon images that are relaxation time weighted. The clinical adoption of qMRI is mainly limited by the long acquisition times required to quantify each relaxation parameter as well as questions around their accuracy and reliability. More specifically, the main limitations of qMRI methods have been the difficulty in dealing with the high inter-parameter correlations and a high sensitivity to MRI system imperfections. Recently, new methods for rapid qMRI have been proposed. The multi-parametric models at the heart of these techniques have the main advantage of accounting for the correlations between the parameters of interest as well as system imperfections. This holistic view on the MR signal makes it possible to regress many individual parameters at once, potentially with a higher accuracy. Novel, accurate techniques promise a fast estimation of relevant MRI quantities, including but not limited to longitudinal (T1) and transverse (T2) relaxation times. Among these emerging methods, MR Fingerprinting (MRF), synthetic MR (syMRI or MAGIC), and T1‒T2 Shuffling are making their way into the clinical world at a very fast pace. However, the main underlying assumptions and algorithms used are sometimes different from those found in the conventional MRI literature, and can be elusive at times. In this book, we take the opportunity to study and describe the main assumptions, theoretical background, and methods that are the basis of these emerging techniques. Quantitative transient state imaging provides an incredible, transformative opportunity for MRI. There is huge potential to further extend the physics, in conjunction with the underlying physiology, toward a better theoretical description of the underlying models, their application, and evaluation to improve the assessment of disease and treatment efficacy.

Solid State Physics

Imaging of Bones and Joints: A Concise, Multimodality Approach This book is unique. It will guide you through the essentials of musculoskeletal imaging using a multimodality approach. Organized by categories of musculoskeletal disorders, it uses a "findings within-the-image" method to help you identify the typical imaging features of each condition. As a comprehensive reference compiled by well-known specialists in the field, it is useful for both practicing radiologists and those in training. Focus on the essentials Provides a solid foundation of what the radiologist needs to know when interpreting musculoskeletal imaging studies, including the indications for when to use various imaging modalities. "Findings within the image" An excellent presentation method for learning to interpret bone and joint images. Find it quickly In addition to a detailed text and high-quality images, important points are summarized in boxes, tables, and illustrative figures for quick reference. Extra features are included on the Thieme MediaCenter An additional 338 images along with supplemental text and references are provided online on the Thieme MediaCenter. Special Features All chapters are written by leading international authors. A comprehensive, multimodality approach is used. Over 2100 brilliant, state-of-the-art images are provided, including a multitude of MR images.