Following the discovery of a “new kind of rays,” to be named by him as x-radiation, and others as Roentgen’s rays, Dr. Roentgen embarked on an intense investigation in a series of innovative experiments to determine its properties and characteristics and how it compared to other known radiations, specifically light and cathode rays. He demonstrated that the radiation produced fluorescence and e...

Computed tomography (CT) is a well stablished imaging technique that is used worldwide for diagnosis and treatment planning. The purpose of this review is to describe the most notable technological advances in the last decade, with a special focus on their impact in CT dose optimization, that is, achieving the same diagnostic image quality at a reduced radiation dose. The review describes main ...

they used standardized regression coefficients, but this was not clarified.) Also, there are a number of minor typographic errors. The most significant findings were that . .. program impact was primarily on savings and socialization of the aged rather than health and nutrition." Moreover, in 1976, less than 3 percent of the Boston area aged (65 or more) residents participated in the program, a...

Background Stamina is a key component within all major tasks necessary for proper motor function. Particularly in individuals in the second half of their lifespan, there is a direct correlation between diminished stamina and increased morbidity and mortality rates. Currently, there are numerous studies validating the relationship between stamina and varying physical capabilities. In this contex...

Computed Tomography (CT) scanner technology has progressed rapidly throughout the past decade, with major advances in CT x-ray detection, system speed, and image reconstruction that have resulted in a stillincreasing number of novel CT clinical applications. Concomitant to this increase in clinical applications, CT technology has also experienced innovation to support the realization of high CT...

As ultrasonic waves penetrate deep into tissues ultrasound imaging is able to image invisible things by “seeing through tissues” in real time. With the advent of ultrafast ultrasound imaging, the modality can reach thousands of frames per second, much faster than what the human eye can see. A completely new world is revealed as most important physiological processes in the human body occur in t...