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This article reviews strategies for radiation dose optimization for computed tomography (CT). A brief overview of dose metrics including computed tomographic dose index, dose length product and effective dose is provided. The impact of age and gender on the sensitivity to radiation is discussed...
Radiation dose and the associated risk to the breast are being studied in much detail with the aim of justifying breast cancer screening. The mean glandular dose has been proposed as the proper quantity to describe risks incurred by radiation. X. Wu (US) and D. Dance (UK) were the first authors...
Over the past two decades, rapid system and hardware development of x-ray computed tomography (CT) technologies has been accompanied by equally exciting advances in image reconstruction algorithms. The algorithmic development can generally be classified into three major areas: analytical...
Computed tomography (CT) was introduced in the early 1970s, and has since then revolutionized diagnostic imaging. Today, CT is the backbone of radiology. In this article we review different CT system design concepts. We start with an overview of the “classic” four generations of CT systems: the...
CT has historically been a static imaging modality, but the human body is in constant motion. The need to visualize the underlying physiology has driven CT to capture functional information as well. CT dynamics can be acquired using several different acquisition techniques on both conventional...
The three CT components with the greatest impact on image quality are the X-ray source, detection system and reconstruction algorithms. In this paper, we focus on the first two. We describe the state-of-the-art of CT detection systems, their calibrations, software corrections and common...
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