Spiral or helical CT?
نویسندگان
چکیده
منابع مشابه
Guest Editorial - Multirow Detector and Cone-Beam Spiral/Helical CT
S PIRAL/HELICAL multirow detector computed tomog-raphy (MDCT), also referred to as multislice spiral CT (MSCT), has attracted a major interest since its recent introduction [18], [33]. Compared with single-row-detector systems, MDCT scanners allow faster data collection and thinner slices that support more demanding clinical applications and present new research opportunities. This special issu...
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The purpose of this study is to understand the effect of pitch on raw data interpolation in multislice spiral/helical computed tomography (CT) and provide guidelines for scanner design and protocol optimization. Multislice spiral CT is mainly characterized by the three parameters: the number of detector arrays, the detector collimation, and the table increment per x-ray source rotation. The pit...
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CT angiography (CTA) is an intriguing example of a seemingly new imaging method that is a modern application of a technique first proposed in the nascent years of CT. Development of CTA was necessarily deferred until the advent of helical (spiral) CT scanning to achieve its promise as a noninvasive angiographic alternative to MR angiography (MRA). The first references in our literature to its a...
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Asymmetric cell shape depends on the ability of oriented layers of cellulose microfibrils to channel the nondirectional drive of turgor pressure. Tough microfibrils encircling the cell resist increases in girth and redirect the swelling force to a direction perpendicular to the alignment of the microfibrils. This transformation of an isotropic force into directional growth is crucial for settin...
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ژورنال
عنوان ژورنال: American Journal of Roentgenology
سال: 1993
ISSN: 0361-803X,1546-3141
DOI: 10.2214/ajr.161.4.8372785