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UNIT 4 RADIOLOGY

X-RAY PRODUCTION

QuestionAnswer
WHAT MATERIAL IS USED FOR THE FILAMENT? Coiled thin wires made out of metal tungsten
DESCRIBE THE FOCAL SPOT: Part of the focal track - the actual area on the target where the electrons strike to produce xrays
WHAT IS 1 MAIN ADVANTAGE OF USING THE FOCAL SPOT AS TO USING THE LARGE FOCAL SPOT? Produces a finer image detail
DESCRIBE THE ANODE-HEEL EFFECT AND GIVE AN EXAMPLE OF HOW TO USE IT FOR DENSITY UNEVEN DISTRIBUTION OF RADIATION INTENSITY = WHEN XRAYS ON A BODY PART THAT IS UNEVEN, PUT THE THICKEST PART UNDER THE CATHODE
DEFINE mA: (MILLIAMPERES) THE UNIT OF MEASUREMENT FOR XRAY TUBE CURRENT
DEFINE kVp (KILOVOLTAGE PEAK) THE VOLTAGE (POTENTIAL DIFFERENCE) APPLIED ACROSS THE XRAY TUBE NEEDED TO MOVE THE ELETRONS FROM THE CATHODE TO ANODE. THE kVp controls the QUALITY OF XRAY PRODUCED
DEFINE EXPOSURE TIME Refers to the length of time tha the xray beam is on. Exposure time is measured in seconds (sec)
WHAT IS THE MINIMUM AMOUNT OF ALUMINUM FILTRATION IN XRAY EQUIPMENT 2.5 mm AL Equiv of filtration as a safety feature.
WHAT ARE THE THREE MAIN PARTS OF THE XRAY TUBE 1) THE GLASS ENVELOPE 2) THE CATHODE 3) THE ANODE
Created by: spoon6464