Radiology terminology first half of semester

12345678910111213141516171819202122
Across
  1. 4. The density difference between two areas or structures on the radiograph; shades of gray on the finished radiograph
  2. 7. The degree of blackness of the image
  3. 8. Substance that does not allow x-rays to penetrate and absorbs more x-rays than tissue or bone and will appear white on a radiograph.
  4. 9. "as low as reasonably achievable"
  5. 10. Areas with little returning echo that appear darker gray on ultrasound images
  6. 11. Infusion of an agent in reverse to how the discharge normally flows
  7. 14. Device placed between the table top and image receptor that consists of lead strips that absorb scatter radiation
  8. 15. A negatively charged electrode within the x-ray tube head that is made up of a filament and a focusing cup.
  9. 16. The ultrasound probe that generates the sound waves and also serves to receive the returning echoes.
  10. 18. Positive contrast medium that is used as a suspension for radiographic contrast studies to assist in evaluation of the gastrointestinal tract.
  11. 19. Distance between successive crests or troughs of a wave; comprised of frequency and amplitude.
  12. 20. Picture element: The smallest component of the digital image matrix.
  13. 21. Substance that allows x-rays to penetrate with limited absorption and will appear black on a radiograph.
  14. 22. A device used to measure anatomical thickness of a specific structure
Down
  1. 1. Examination of the subarachnoid space around the spinal cord following injection of a contrast agent.
  2. 2. A radiographic contrast study to evaluate the urinary bladder
  3. 3. Examination of the urethra following administration of a contrast agent
  4. 5. Areas that do not generate an echo on ultrasound images
  5. 6. Areas with a high intensity echo that appear very bright on ultrasound images
  6. 9. Positively charged electrode in the x-ray tube head
  7. 12. Chart that provides kVp and mAs needed for specific radiographic studies based on the size of the patient.
  8. 13. Device to monitor personnel exposure to radiation.
  9. 15. The structure located below the tube window that has a set of lead shutters to limit the size of the x-ray beam.
  10. 17. Used to control the quantity of electrons that will be produced and released from the filament during x-ray production