LRA 221 Week 1 Questions and Verified Answers - (2024/ 2025 Update) 100% Correct

LRA 221 Week 1 Questions and Verified Answers - (2024/ 2025 Update) 100% Correct Q: DICOM is a standard that allows imaging modalities and PACS to communicate in the same language A. True B. False Answer: A. True Q: Which of the following statements is not true? A. Matrix size can change without affecting the FOV B. FOV can change without affecting the matrix C. Changing the matrix or the FOV will change the size of the pixel D. Changing the matrix and the FOV will not change the size of the pixel Answer: D. Changing the matrix and the FOV will not change the size of the pixel Q: Each square in a matrix is called a A. matrix element B. picture element C. bit D. byte Answer: B. picture element Q: The number of bits per pixel is known as bit A. pitch B. depth C. height D. width Answer: B. depth Q: Which of the following statements is not true? A. Exposure index refers to the amount of exposure to the patient B. Exposure index refers to the amount of exposure to the image receptor C. Exposure is not uniformly represented across manufacturers D. Exposure index standardization is beneficial to the technologist Answer: A. Exposure index refers to the amount of exposure to the patient Q: Deviation index is the difference between _____ and _____ expressed in logarithmic fashion A. actual exposure (KIND); target exposure (KTGT) B. standard exposure (KSTD); actual exposure (KIND) C. standard exposure (KSTD); target exposure (KTGT) Answer: A. actual exposure (KIND); target exposure (KTGT) Q: How dark or light a digital image appears on a display monitor is known as A. density B. contrast resolution C. brightness D. spatial resolution Answer: C. brightness Q: The ability of a digital system to display subtle changes in shades of gray is called A. image quality B. contrast resolution