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CT Scanning – Techniques and Applications

Since its introduction in 1972, X-ray computed tomography (CT) has evolved into an essential diagnostic imaging tool for a continually increasing variety of clinical applications. The original systems were dedicated to head imaging only, but “whole body” systems with larger patient openings became available in the late 1970’s. Technical advancements in developing high-power x-ray tubes and computing technologies led to two major evolutionary leaps in CT imaging during the past decade. The first of these occurred in the early 1990’s with the introduction of CT scanners with simultaneous patient translation and data acquisition (“spiral” or “helical”). The second leap occurred mid-decade, with the introduction of multiple row detectors capable of multiple slices per x-ray tube rotation. These advances improved volume coverage and/or longitudinal spatial resolution, and creating new applications that could not have been attempted before, such as CT angiography, virtual endoscopy, CT-guided surgery/radiation therapy, and computer integrated surgery. The goal of this book was not simply to summarize currently available CT imaging techniques but also to provide clinical perspectives, advances in hybrid technologies, new applications other than medicine and an outlook on future developments. Major experts in this growing field contributed to this book, which is geared to radiologists, orthopedic surgeons, engineers, and clinical and basic researchers. Each of us has written different part of this book, obviously depending on our areas of expertise. We believe that CT scanning is an effective and essential tools in treatment planning, basic understanding of physiology, and and tackling the ever-increasing challenge of diagnosis in our society.
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تاریخ : یکشنبه 97/1/26 | 7:47 عصر | نویسنده : faezehe meskini | نظرات ()

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