LRA 221 Finals Review Questions and Answers Latest Version | 2024/2025 | Rated A+

LRA 221 Finals Review Questions and Answers Latest Version | 2024/2025 | Rated A+ A device that acts like a camera in an indirect conversion detector is known as a CCD A device that includes a photosensitive array and small pixels that convert light into electrical charges is known as a ______ transistor. thin film A highly efficient indirect conversion system that takes up less fill space than CCDs is known as a(n) CMOS A histogram displays the useful signal by locating: Maximum and minimum signal A look-up table maps Image gray scale values A technologist can lend credibility to his or her expertise by Using personal position markers All flat-panel detector systems have the ability to take images faster than the detector can accommodate. False All of the following are components of a PACS except independent kilovoltage peak and milliampere-second stations. Amplification of the frequencies of the areas of interest is known as edge enhancement An image manipulation process that fills in the background so that it is darkened is known as shuttering Automatic rescaling means that images are produced, regardless of the amount of exposure, with uniform contrast and density CCDs use more power than CMOS. True Changing the slope of the look-up table graph will increase or decrease contrast Coherent light is formed by the laser because the photons travel in the same direction Collimation to a smaller area decreases scatter CR acquires an image through: The use of a storage phosphor plate Cracks in the imaging plate can be caused by: removing and replacing the plate in the reader Detector performance is measured with all of the following except contrast Deviation index is the difference between _____ and _____ expressed in logarithmic fashion. actual exposure (KIND); target exposure (KTGT)