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First multi-year cumulation covers six years: 1965-70.
Manipulation and Dilution Tools for Ruling Abundant Species "NMR is dead" was the slogan heard in the late 1960s at least among physicists, until John S. Waugh and his co-workers initiated a series of new NMR experiments, which employed the coherent modulation of interactions by strong radiofrequency fields. A wealth of new phenomena was observed, which are summarized in the introduction for the convenience of the unbiased reader, whereas Section 2 collects the basic spin interactions observed in solids. Line-narrowing effects in dipolar coupled solids by the application of multiple pulse experiments are extensively discussed in Section 3. Numerous extensions of the basic Waugh, Huber, and Haeberlen experiment have been developed by different groups and have been applied to the nuclei IH, 9Be, 19F, 27Al, 31p, 63CU in solids. Application of this technique to a variety of systems is still in progress and should reveal interesting insights into weak spin interactions in solids. It was soon realized that rare spins could be used as monitors for molecular fields in the solid state; however, rare spin observation is difficult because of the small signal-to-noise ratio. Pines, Gibby, and Waugh introduced a new concept of cross-polarization, based on ideas of Hahn and co-workers, which allows the detection ofrare spins with increased sensitivity. The dynamics involved are treated in detail. Other sections merely list results obtained by the techniques described and demonstrate their usefulness in the investigation of dynamical problems in molec ular and solid state physics.
The proceedings reflect the Twelfth International Conference on Defects in Insulating Materials, covering topics on point defects and extended defects including theory and computer simulation in various insulating materials, as well as applications in laser physics, imaging, data storage and radioactive waste disposal.
Magnetic Resonance Imaging, not so long ago a diagnostic tool of last resort, has become pervasive in the landscape of consumer medicine; images of the forbidding tubes, with their promises of revelation, surround us in commercials and on billboards. Magnetic Appeal offers an in-depth exploration of the science and culture of MRI, examining its development and emergence as an imaging technology, its popular appeal and acceptance, and its current use in health care. Understood as modern and uncontroversial by health care professionals and in public discourse, the importance of MRI—or its supposed infallibility—has rarely been questioned. In Magnetic Appeal, Kelly A. Joyce shows how MRI technology grew out of serendipitous circumstances and was adopted for reasons having little to do with patient safety or evidence of efficacy. Drawing on interviews with physicians and MRI technologists, as well as ethnographic research conducted at imaging sites and radiology conferences, Joyce demonstrates that current beliefs about MRI draw on cultural ideas about sight and technology and are reinforced by health care policies and insurance reimbursement practices. Moreover, her unsettling analysis of physicians' and technologists' work practices lets readers consider that MRI scans do not reveal the truth about the body as is popularly believed, nor do they always lead to better outcomes for patients. Although clearly a valuable medical technique, MRI technology cannot necessarily deliver the health outcomes ascribed to it. Magnetic Appeal also addresses broader questions about the importance of medical imaging technologies in American culture and medicine. These technologies, which include ultrasound, X-ray, and MRI, are part of a larger trend in which visual representations have become central to American health, identity, and social relations.
Includes entries for maps and atlases.