tailieunhanh - New Techniques in Oncologic Imaging

Computed tomography (CT) is the mainstay of cancer imaging outside of the central nervous system. Advances in multidetector CT (MDCT) technology have had a profound impact on its diagnostic capabilities. Such techniques as multiphase, single breath-hold imaging, CT angiography (CTA), volume rendering and virtual colonography owe their success to the development of multidetector arrays with continuously moving gantries. However, to achieve these advantages without incurring the penalty of increased radiation exposure, care must be exercised in selecting the optimum combination of slice thickness, X-ray beam collimation, and table speed

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