کتاب Sectional Anatomy: PET/CT and SPECT/CT زبان اصلی

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کتاب Sectional Anatomy: PET/CT and SPECT/CT زبان اصلی

Combined positron emission tomography (PET) or single photon emission computed tomography (SPECT) with computed tomography (CT) has developed into the faste- growing imaging modality largely because combined PET or SPECT with CT data acquisition is highly synergistic in diagnosis and therapeutic evaluation. All currently available data indicate that integrated PET or SPECT/CT is more sensitive and s- ci?c than either of its constituent imaging methods alone and probably more so than images obtained from separate systems viewed side by side. The PET or SPECT/CT provides precise localization of the lesions, thereby increasing diagnostic speci?city particularly by reducing false-positive ?ndings. The other advantage of adding CT is that the transmission data obtained with the CT component is useful for attenuation correction of the emission data. This makes PET/CT 25%–30% faster than PET alone with standard attenuation–correction method, leading to higher patient throughput and a more comfortable examination, which typically lasts 30 minutes or less. With hybrid imaging, unique physiologic information bene?ts from a precise to- graphic localization. Simultaneous evaluation of metabolic and anatomic information about normal and disease processes is needed to answer complex clinical questions and also raise the level of con?dence of scan interpretation. It is always dif?cult to consider three dimensions in the mind’s eye and view the relationship of the viscera and fascial planes in transverse and vertical sections of the body’s structure. The introduction of modern imaging techniques has enormously expanded the already considerable importance of sectional anatomy

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کتاب Computed Tomography: Physical Principles, Clinical Applications, and Quality Control زبان اصلی

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کتاب Computed Tomography: Physical Principles, Clinical Applications, and Quality Control زبان اصلی

نوشته اکلید سیرام Euclid Seeram

کتاب فوق العاده و جامع فیزیک، کاربرد و کنترل کیفی سی تی اسکن

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کتاب Kaplan and Sadock's Pocket Handbook of Clinical Psychiatry زبان اصلی

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کتاب Kaplan and Sadock's Pocket Handbook of Clinical Psychiatry زبان اصلی

Thoroughly updated for its Third Edition, this popular quick-reference handbook remains a staple for medical students on psychiatric rotations as well as psychiatric residents and practitioners. In an easy-to-scan outline format, the book presents the etiology, epidemiology, clinical characteristics, and treatment of all psychiatric disorders. Additional chapters cover the psychiatric examination, special populations, psychotherapy, biological therapies, medication-induced movement disorders, legal issues, and laboratory tests.The book is replete with tables and includes color photographs of psychiatric drugs. Each chapter ends with suggestions for further reading, which include cross-references to specificpagenumbers in Kaplan and Sadock's Comprehensive Textbook of Psychiatry

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Asian Monsoon Failure and Megadrought During the Last Millennium

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Asian Monsoon Failure and Megadrought During the Last Millennium

Science  23 Apr 2010:
Vol. 328, Issue 5977, pp. 486-489
DOI: 10.1126/science.1185188

• Edward R. Cook¹,*,
• Kevin J. Anchukaitis¹,
• Brendan M. Buckley¹,
• Rosanne D. D’Arrigo¹,
• Gordon C. Jacoby¹,
• William E. Wright¹,²

Abstract

The Asian monsoon system affects more than half of humanity worldwide, yet the dynamical processes that govern its complex spatiotemporal variability are not sufficiently understood to model and predict its behavior, due in part to inadequate long-term climate observations. Here we present the Monsoon Asia Drought Atlas (MADA), a seasonally resolved gridded spatial reconstruction of Asian monsoon drought and pluvials over the past millennium, derived from a network of tree-ring chronologies. MADA provides the spatiotemporal details of known historic monsoon failures and reveals the occurrence, severity, and fingerprint of previously unknown monsoon megadroughts and their close linkages to large-scale patterns of tropical Indo-Pacific sea surface temperatures. MADA thus provides a long-term context for recent monsoon variability that is critically needed for climate modeling, prediction, and attribution.

A Web-based Pavement Performance and Maintenance Management and GIS Mapping System for Easy Access to Pavement Condition Inform

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یک سیستم مدیریت و نگهداری راه با استفاده از نرم افزار GIS