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week 12

QuestionAnswer
What is the main image characteristic of Digital Radiographic Tomosynthesis (DRT) Image contrast
Why is image contrast important in DRT? It improves visualization of structures at different depths and enhances diagnostic accuracy.
What role does the X-ray source play in DRT? It moves during image acquisition to capture multiple projections from different angles.
What are the two X-ray tube motion methods used in DRT? Continuous sweep and step-and-shoot
What is a continuous sweep in DRT? The X-ray tube moves smoothly while acquiring multiple projections.
What is step-and-shoot motion in DRT? The X-ray tube stops at fixed angles to acquire individual projections.
What is the sweep angle in DRT? The angular range over which the X-ray tube moves during image acquisition.
What are projections in DRT? Multiple low-dose images acquired at different angles used for image reconstruction
Why was DRT not possible before digital image receptors? Film-screen systems could not rapidly acquire and process multiple projections
What type of image receptor is required for DRT? A digital image receptor
What is image reconstruction in DRT? The process of creating sectional images from multiple projections.
What is CAD in DRT? Computer-Aided Detection
How is CAD related to artificial intelligence CAD is an early application of AI used to assist in detecting abnormalities.
Does DRT have unique artifacts? Yes
What are the two main artifacts in DRT? Blurred-ripple and truncation artifacts
Created by: bquinonez23
 

 



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