Image Analysis Key Terms
Across
- 1. Outline of an anatomic structure
- 3. Motion that patient is unable to control
- 4. Kilovotage peak (kVp) that will provide adequate body part penetration and sufficient gray scale
- 8. Determines maximum time that the AEC x-ray exposure will be allowed to continue
- 9. Sthenic is example
- 10. Foot end of patient
- 11. Technique whereby object-image receptor distance (OID) is increased to reduce amount of scatter radiation reaching IR
- 12. Decreased size of one axis of a structure
- 13. Philosophy used to guide good radiation exposure practices
- 16. How differently each tissue composition type will absorb photons
- 17. Plane that divides the body into equal left and right halves
- 19. Filter used to remove photons from the beam to produce uniform density
- 23. Sharpness of structures
- 27. Misrepresentation of size or shape of structure
- 28. Absorbed dose to the most superficial layers of skin
- 29. Results of poor central ray and grid alignment
- 30. Number of gray shades used to represent different image structures
- 31. Device used to reduce amount of scatter radiation reaching the image receptor (IR)
- 32. Law used to adjust milliampere-second (mAs) to maintain density when source-image receptor distance (SID) is changed
- 34. Preventing passage of x-radiation
- 36. Diseases that cause the structure to be more radiolucent
- 37. Movement that bends a joint
- 38. Diseases that cause tissues to increase in mass density or thickness
Down
- 1. Act of throwing a structure
- 2. Contrast caused by x-ray attenuating characteristics of subject
- 3. Device that receives radiation leaving patient
- 5. Plane that divides the body into equal parts
- 6. Head end of patient
- 7. Biologic response of radiation exposure directly related to dose received
- 14. Shortest exposure time to which the automatic exposure control (AEC) can respond
- 15. Results of using an angled central ray while part and IR remain parallel
- 18. Maximum permissible radiation dose limits
- 20. System that automatically determines image density by stopping exposure
- 21. Chamber in AEC system that collects radiation
- 22. Radiation that has changed in direction from primary beam
- 23. Allowing passage of x-radiation
- 24. Ability to differentiate details from one another on an image
- 25. Law that states that radiation intensity is inversely proportional to square of its distance from x-ray source
- 26. Absorption of radiation in heel of anode, causing less radiation intensity at anode end of IR
- 33. Gown snap on an image
- 35. Position in which the patient lies on a cart and a horizontal beam is used
- 36. Situated far from the source or beginning