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TEST 1
REVIEW MAGNETISM
Question | Answer |
---|---|
WHAT CONVERSION OCCURS AT THE INPUT PHOSPHOR | x rays are converted to visible light |
WHAT STAGE OF IMAGE INTENSIFIED FLUOROSCOPY IS THE # OF PHOTON THE LOWEST | ENTERING THE INPUT PHOSPHOR |
WHAT IS A TUBE RECTIFIER | A VACUUM GLASS TUBE WITH A SMALL COIL OF WIRE WHICH HEATS UP WHEN A CURRENT PASSED THROUGH IT |
WHAT IS THE CAUSE OF A FAULTY TIMER | FAULTY RECTIFIER |
MOST XRAY TUBE FAILURE IS A RESULT OF WHAT | THERMAL ISSUES |
HOW CAN YOU TEST A TIMER | SPINNING TOP |
WHAT DOES THE TUBE CONSIST OF | FLOW OF ELECTRONS FROM CATHODE TO ANODE |
WHAT IS THE AUTOTRANSFORMER | KVP SELECTOR |
EXTRA FOCAL XRAYS OR OFF FOCUS XRAYS IS CAUSED FROM WHAT | ELECTRONS INTERACTING WITH SOMETHING OTHER THAN THEIR INTENDED TARGET |
WHAT IS SMALLER THE ACTUAL OR EFFECTIVE FOCAL SPOT | EFFECTIVE |
WHAT CAN MAKE THE EFFECTIVE FOCAL SPOT SMALLER | STEEPER ANGLE |
WHERE ARE XRAYS FORMED | SHELL |
WHAT DOES THE CATHODE CONSIST OF | FILAMENT AND FOCUSING CUP |
THE POWER SUPPLIED TO THE XRAY MACHINE IS FIRST SHUNTED TO THIS | AUTO TRANSFORMER |
WHAT KIND OF TIMER IS USED IN PORTABLE AND DENTAL UNITS | MECHANICAL TIMERS |
A DEVICE THAT MEASURES THE QUANTITY OF RADIATION REACHING THE FILM AND AUTOMATICALLY TERMINATES EXPOSURE WHEN SUFFICIENT RADIATION TO MEET THE REQUIRED DENSIT HAS REACHED THE FILM | PHOTOTIMERS (AEC) |
ENCLOSED IN A LARGE METAL TANK CONTAINS HIGH VOLTAGE STEP TRANSFORMER | HIGH VOLTAGE GENERATOR |
3 FACTORS THAT ATTENUATION OF THE BEAM AND ABSORPTION DEPEND ON | ATOMIC # OF THE ATOMS IN TISSUE MASS DENSITY OF TISSUE X-RAY ENERGY |
WHAT TYPE OF GENERATOR IS USED TODAY | HIGH FREQUENCY |