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Equipment Design for Radiation Protection in Radiographic Imaging

Explore essential equipment for protecting patients and radiographers in radiology, including collimation, filters, anodes, grids, and dose reduction techniques. Learn about X-ray housing, image receptors, fluoroscopy, and CT protocols for minimizing radiation exposure. Discover the importance of dose reduction in diagnostic imaging.

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Equipment Design for Radiation Protection in Radiographic Imaging

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  1. Chapter 11, (7thed) Equipment Design for Radiation Protection

  2. Radiographic equipment which is designed to protect the Rt and the patient

  3. Collimation is always important for the Pt. as well as the RT

  4. This is known as a diaphragm

  5. Seldom used currently due to computerized imaging systems

  6. Filter (The best thing ever invented to reduce Pt. dose)

  7. Moly anodes used in Mammo to create a more monochromatic beam

  8. Are grids radiation dose reduction devices?

  9. CR VS Film

  10. Pt. and Rt. protection

  11. Image intensification

  12. Dose reduction—What do you do?

  13. Fluoro dose reduction • Time • Collimate • Where do you stand? • Last image hold • Pulsed fluoro • High-level control VERY high dose to Pt & RT • See p. 236-8 box & table

  14. List of dose reduction measures X-ray housing/tube assembly: 3 phase & high frequency generators Stable high voltage generators Collimator on tube housing window to stop off focus radiation Filtration & heavy metal filters Adequate collimation Image Receptor: CR / DR systems allow for higher KVP & total dose reduction Reduction of repeats Windowing and leveling allow for less images being produced. Fluoro Image ingtensifier, 5 minute timer, dead man switch, filter on fluoro tube, lead in table to protect Rad. Last image hold Pulsed fluoro CT Protocols that reduce dose THERE IS GREAT INTEREST IN DOSE REDUCTION IN ALL AREAS OF DIAGNOSTIC IMAGINGTODAY. (THERE ARE MORE. WHAT CAN YOU THINK OF?)

  15. End Ch. 11 (7thed.) For an x-ray photon to be of any diagnostic value, what three things must happen to it? Originate for close to a point source Travel in a straight line Stop in the pt. or continue on to the IR

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