Lra 221 Study guides, Class notes & Summaries

LRA 221 Quizzes 2024 with complete solutions

LRA 221 Finals Review With Complete Solutions

LRA 221 Questions and Verified Answers - (2024/ 2025 Update) 100% Correct Q: Which of the following statements about scintillators is true? a. all scintillators absorb the same amount of x-ray photons b. the amount of x-rays absorbed depends on the type of scintillator c. structured phosphors produce more light spread d. unstructured phosphors are more efficient Answer: the amount of x-rays absorbed depends on the type of scintillator Q: The readout process requires that ...

LRA 222 Week 2 Questions and Verified Answers - (2024/ 2025 Update) 100% Correct | Grade A Q: Each light photon is assigned a number during A. amplification B. sampling C. digitization D. laser scanning Answer: C. digitization Q: The wavelength of the PSP reader laser is ______ nm A. 336 B. 636 C. 633 D. 366 Answer: C. 633 Q: The laser scans the imaging plate in a ______ pattern A. raster B. horizontal C. circular D. random Answer: A. raster ...

LRA 221 Final Exam Questions and Verified Answers - (2024/ 2025 Update) 100% Correct Review 182 Q: Aliasing occurs when the sampling frequency is not greater than twice the frequency of the input signal. a. True b. False Answer: b. False Q: In digital projection radiography, what process is used to normalize an image that has been taken with too great of an exposure? a. High-pass filtering b. Low-pass filtering c. Automatic rescaling d. Aliasing Answer: c. Automatic res...

LRA 221 Week 2 Questions and Verified Answers - (2024/ 2025 Update) 100% Correct Q: The optical mirror in the reader A. directs the laser beam to the imaging plate surface B. forms the laser beam into a circle C. causes the laser beam to diverge D. creates the laser beam Answer: A. directs the laser beam to the imaging plate surface Q: Typical cassette throughput is _____ cassettes per _____ A. 5; minute B. 25; minute C. 25; hour D. 50; hour Answer: D. 50; hour ...

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 chan...

LRA 221 Quizzes__2024 with Complete Solutions

LRA 221 Week 3 Questions and Verified Answers - (2024/ 2025 Update) 100% Correct Q: The absorption material can be attached to the pixel array electrically or physically A. True B. False Answer: A. True Q: All flat-panel detector systems have the ability to take images faster than the detector can accommodate A. True B. False Answer: B. False Q: Which statement best describes a charge-coupled device (CCD)? A. It is the oldest direct conversion technology that is...

1. Film and intensifying screens are primarily used in A. computed radiography (CR) B. digital radiography (DR) C. conventional radiography D. picture archival and communication systems - correct answer C. conventional radiography 2. CR acquires an image through A. conventional film/screen processing using a digital scanner B. the heating of a thermoluminescent device C. an electrically charged cassette D. the use of a storage phosphor plate - correct answer D. the use of a storage ph...