Mobile X-ray
What aspect of mobile radiography is key in preventing more repeats than necessary?
What is communication?
What is the minimum SSD for stationary and mobile units?
What is 12" for mobile and 15" for stationary equipment?
What does federal law require regarding fluoroscopic units and why?
What is an audible 5-minute timer used as a reminder to the radiologist of how much exposure time is being used?
What are the three elements of tomography?
What is the tube, object, and the IR?
What is tomography?
What is an x-ray technique that employs motion to show anatomy lying in a plane o tissue while blurring or eliminating detail in images of structures above and below plane of interest?
What three steps should be taken when performing mobile radiography?
What is establishing rapport, gaining permission from patient to do exam, and explaining the procedure to them?
What is the minimum Pb/eq that must be worn by all people present in the fluoroscopy room?
What is 0.5 mm Pb/eq?
What is coated onto the concave surface of the tube?
What is sodium-activated cesium iodide?
What is the exposure amplitude?
What is the distance the tube travels only during the exposure?
What is the relationship b/w blur and exposure amplitude?
What is a direct relationship?
What technique system is recommended with DR receptors in mobile radiography?
What is fixed kVp technique systems?
How do fluoroscopic X-ray tubes differ from diagnostic radiography?
What is the design to operate for longer periods of time at lower mA?
What is image capture, readout of data, and clearing the DELs for next capture?
What is the fulcrum, phantom, focal plane, section thickness, and section interval?
In fluoroscopic tubes, what is the output screen composed of?
What is zinc-cadmium sulfide?
What must the distance parameter be within the correct SID to be efficient?
What is 15%
What is flux gain and how do you measure it?
What is the measurement of the increase in light photons due to the conversion efficiency of the output screen? The formula is number f output light photons/number of input X-ray photons.
What are the inherent weaknesses of image intensifier tubes?
What is vignetting, pincushioning, blooming, peripheral falloff, or rotational antigravity correction?
What is the difference between curvilinear motion and linear motion?
What is curvilinear motion that allows for maintaining SID and OID reducing magnification while linear motion can be added to a regular X-ray tube but the SID and OID changes as tube moves, as well as limiting the tomographic amplitude?
What is total brightness gain determined by?
What is minification gain and flux gain?
When considering grid use in mobile radiographer, what ratio and frequency is recommended?
Bonus +50: Name the recommended parameters
What is a lower ratio and higher frequency?
6:1-8:1 and 178-200 lines per inch
How do II tubes work?
What is the fluorescent screen that absorbs X-ray photons and emits light that encounters the photocathode. The photocathode absorbs the light and emits electrons. Electrons are accelerated from cathode toward anode and output screen. Acceleration increases energy and ability to emit light at output screen which absorbs electrons and light photons that are available for viewing?
With fluoroscopy, what is the time factor controlled by?
What is controlled by the length of time that the eye can integrate or accumulate light photons from the fluoro imaging chain which is 0.2 seconds?
What are considerations of the exposure factors when using tomosynthesis? (Think time, mA, and kV)
What is 3-6 second exposures, mA stations below 100, and the 15% rule to keep IR exposure consistent?
What replaced the original cathode ray tube in video viewing systems in fluoroscopy and why?
What is CCD because of the shorter lag time with more accuracy?