Rad Tech Bootcamp: Image Production Questions and Answers Already Passed

Rad Tech Bootcamp: Image Production Questions and Answers Already Passed Why is a low contrast-to-noise ratio (CNR) undesirable? It makes it harder to distinguish anatomical structures What is the function of an anti-aliasing filter in digital imaging? It reduces image artifacts caused by improper sampling How does increasing tube current (mA) affect image production? It increases X-ray photon production, affecting image brightness What is the purpose of the histogram in digital radiography? It maps exposure data to adjust image appearance Why is lead shielding important in radiographic imaging? It protects patients and staff from unnecessary radiation exposure 2 How does scatter radiation affect image contrast? It decreases contrast by adding unwanted exposure to the image What is the relationship between pixel matrix size and image resolution? A larger matrix size results in better image resolution How does magnification distortion occur in radiography? When the object is too far from the image receptor, increasing OID Why is edge enhancement used in digital imaging? To improve visualization of small details and structures What is the effect of overexposure in digital radiography? Image brightness remains stable, but patient dose is unnecessarily high How does indirect digital radiography differ from direct digital radiography? Indirect uses a scintillator to convert X-rays to light before producing an image 3 What is the purpose of dynamic range in digital imaging? It defines the range of exposures that a detector can accurately capture Why is proper calibration of digital detectors necessary? To maintain consistent image quality and prevent artifacts What is the primary controlling factor of image contrast in radiography? kVp How does increasing mAs affect image brightness in digital radiography? It does not significantly affect brightness but increases patient dose What is the purpose of a grid in radiographic imaging? To reduce scatter radiation and improve image contrast How does increasing SID affect image sharpness? It improves sharpness by reducing magnification 4 What is the relationship between focal spot size and image sharpness? A smaller focal spot improves image sharpness Why is collimation important in radiographic imaging? It reduces patient dose and improves image quality by limiting scatter What happens if OID increases in an X-ray image? Magnification increases and sharpness decreases How does increasing kVp affect beam penetration? It increases beam penetration, reducing subject contrast What is the purpose of using exposure index (EI) in digital imaging? It indicates whether the correct exposure was used Why is automatic rescaling important in digital radiography? It adjusts brightness to maintain image consistency despite exposure variations 5 What is the function of the anode heel effect in image production? It causes greater intensity on the cathode side and affects image uniformity What happens if the backup timer in AEC is set too low? The image may be underexposed