Mosby #2 questions with correct answers

1. In many cases, digital fluoroscopy eliminates which of the following? a.The need for a radiographer b.Postprocedure "overhead" images c.Image acquisition d.Accurate positioning - Answer B. Most views required by the radiologist are acquired digitally during fluoroscopy. 2. What is the smallest particle of an element that retains the characteristics of the element? a.Mole b.Atom c.Molecule d.Quark - Answer B. The atom may be broken down into subatomic particles but they would not have the characteristics of the element. 3. In digital fluoroscopy, the image must be turned into digital form by what device? a.Digital-to-analog converter b.Flux capacitor c.Analog-to-digital converter d.DVD-ROM - Answer C. The information acquired by scanning the imaging plate must be converted from its analog form to digital for further manipulation. This is an extra step when compared with direct digital radiography (DR). 4. X-rays travel as bundles of energy called: a.Energy waves b.Phasers