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Power supply generators for x-ray tubes, which deliver the necessary voltage and amperes for producing x-ray beams of varying characteristics. The power supply is controlled by the user, and settings are determined by a technician.The x-ray tube may be an integral part of the generator unit in some models.
1. Facilities should select power rating and timing capabilities based on the types of examinations to be performed and the operating technique factors required with the type of x-ray generator selected.
2. Power setting is the main factor when dealing with these x-ray generator units.
3. Low power x-ray generators are capable of the full range of x-ray exposures.
4. Shorter exposure times can be used with higher power. With shorter exposure times, there is less chance of movement artifacts.
5. A 50 kW-generator is sufficient if the generator is used predominantly for extremity and chest imaging.
6. When large patients are expected, particularly in Radiographic/Fluoroscopic system applications, higher power generators are needed.
7. If a heavy workload of abdominal imaging is expected, then an 80 kW generator should be considered.
8. When choosing a Radiographic-Tomographic system unit, facilities should consider the secondary waveform type, timing capabilities, and compatibility with other system components.
9. The secondary waveform type determines the efficiency of x-ray production, including the magnitude of ripple and the ratio of average to peak x-ray tube voltage.
10. Secondary waveforms that are single-phase, full-wave rectified provide the least efficient production of x-rays, which results in longer radiographic exposure times and higher patient radiation exposure.
11. Single-phase x-ray generators cause increased x-ray tube anode heating, and therefore restrict small focal spot examinations and reduce tube life.
12. Three-phase x-ray generators allow higher mA exposures at shorter exposure times, reduce motion un-sharpness, and produce higher-quality radiographs for many examinations.
13. Facilities should add power installation costs to the project budget if three-phase power service is not available at the planned location.
14. A procedure using a three-phase or high frequency x-ray generator needs lower kVp and/or mAs than the same one using a single-phase x-ray generator. 15. Routine radiographic, angiographic, fluoroscopic, and tomographic procedures vary in their kVp and mAs requirements, so all features of Radiographic-Tomographic Systems and Radiographic/Fluoroscopic Systems must be taken into consideration.
16. Putting the x-ray generator too far away from the x-ray tube may cause distortions in voltage waveforms and timing responses caused by capacitance in excessively long high-voltage cables.
17. Facilities must select x-ray generator components for compatibility as an integrated system. It is specifically critical to choose compatible x-ray tubes and generators to fully utilize all features of both components.
Before you purchase your X-ray Generator, we recommend you ask the seller the following questions: