Radiography For Vet Tech Penn Foster Study Questions and Answers

How is the electromagnetic spectrum measured? Energy (eV), frequency (Hz), and wavelength (λ) Why is the x-ray tube enclosed in glass? The x-ray tube is enclosed in glass so a vacuum can be created. What's the purpose of a rotating anode? To dissipate heat more quickly and prevent damage to the anode Why are short wavelengths better than long wavelengths for radiograph production? They're very powerful and the potential for penetration through a mass is better. The x-ray tube consists of what two parts? anode and cathode What does the control panel do? allows the operator to control the x-ray machine and adjust the settings Why is it important in veterinary radiology to keep the mA setting as high as possible? the exposure time can be as low as possible Technique is a term used for the major factors set on a radiology machine control panel. What factors are included in this term? kV, mA, and time (seconds) Where is the grid located? What is its purpose? The grid is located under the table and above the cassette holding tray. Its purpose is to prevent scatter radiation List three functions of a cassette. A cassette is used to hold the intensifying screens, keep the film clean, and keep light away from the film. Radiation levels are measured in RAD, REM, and Sievert What is the minimal radiation safety protection necessary when in the room during the x-ray exposure? Gowns and gloves of 0.5 mm lead equivalent What is a dosimeter? What is it used for? A dosimeter is a device worn at neck level outside of the gown during radiographic procedures to monitor the amount of radiation the worker is exposed to in a given period of time