1. IMAGE MANIPULATION

2. THOSE TECHNIQUES OR PROCESSES WHICH MODIFY AN IMAGE OR GROUP OF IMAGES TO ENHANCE THE VISIBILITY OF USEFUL INFORMATION WHILE SUPPRESSING NOISE OR NON- USEFUL INFO.

3. WINDOWING POINT PROCESSING TECHNIQUE

4. WINDOWING SYNONYMS: CONTRAST ENHANCEMENT CONTRAST STRETCHING HISTOGRAM MODIFICATION HISTOGRAM STRETCHING MOST COMMON IMAGE PROCESSING TECHNIQUE IN CT

5. CONTRAST MANIPULATION

6. WINDOW WIDTH – WW CONTROLS CONTRAST IN CT LARGE NUMBER – LOW CONTRAST LONG SCALE OF CONTRAST WIDE LATITTUDE

7. WINDOW LEVEL - WL CONTROLS DENSITY IN CT LARGE NUMBER – HIGH DENSITY OBJECTS WITH CT# BELOW WL WILL GET DARKER

8. WW – 2000, WL 0 CT # 0 + 1000 CT # 0 - 1000 MIDPOINT - O

9. WINDOW WIDTH WW

13. CT # RANGES VARY IN SCANNERS -1000 TO + 3095 -2048 TO + 6143

14. WW & WL +3071 -1024 WW

15. WW & WL +3071 -1024 WW

16. WW & WL +3071 -1024 WW

17. WW MANIPULATION LUNGLIVERPELVIS NARROW WW LUNG LIVERPELVIS

18. WW MANIPULATION LUNGLIVERPELVIS MEDIUM WW LUNGLIVERPELVIS

19. WW MANIPULATION LUNGLIVERPELVIS WIDE WW LUNGLIVERPELVIS

20. WL MANIPULATION LUNGLIVER PELVIS -1000 +1000 WL

21. WL MANIPULATION LUNGLIVER PELVIS -1000 +1000 WL

22. WL MANIPULATION LUNGLIVER PELVIS -1000 +1000 WL

23. WW - WIDE 400- 2000 FOR TISSUES OF GREATLY DIFFERING ATTENUATION WITHIN THE IMAGE BODY SCANS- 350-600 WW LUNG – 1000-2000 WW BONE – 1000 – 2000 WW

24. WW - NARROW 50-350 FOR DIFFERENT TISSUES OF SIMILAR DENSITIES WITHIN THE IMAGE BRAIN - 80-150 WW LIVER – 100 - 250 WW

25. WL – WINDOW LEVEL SHOULD BE CENTERED NEAR THE AVERAGE ATTENUATION OF THE TISSUES OF INTEREST BODY – 0 TO 60 WL LUNG- -600 TO -800

26. CONTRAST vs WW WW CONTRAST MEDIUM WW – CONTRAST OPTIMIZED MEDIUM WW – CONTRAST OPTIMIZED

27. WL 0, WW –1,000 -5000 +500 1000 500

28. WL +100, WW 800 -300+100 +500 800 400

29. WL -100, WW 600 -400-100 +300 600 300

30. WW – 350-600 WL – 0 - 60 400 40

31. WW – 350-600 WL – 0 - 60 400 40

32. WW – 350-600 WL – 0 - 60 400 40

33. WW – 350-600 WL – 0 - 60 400 40

34. WW – 350-600 WL – 0 - 60 600 40

35. WW – 350-600 WL – 0 - 60 600 40

36. WW – 80-150 WL – 0 - 60 80 40

37. WW – 80-150 WL – 0 - 60 140 40

38. WW – 80-150 WL – 0 - 60 150 60

39. WW – 400-2000 WL – -600 TO -750 1500 -600

40. WW – 400-2000 WL – 400-800 1500 500

41. WW – 400-2000 WL – 400-800 1500 500

42. WW – 400-2000 WL – 400-800 1500 500

43. WW – 400-2000 WL – 400-800 1500 500

44. DUAL WINDOW DISPLAY DIFFERENT WW & WL PROVIDES WELL DEFINED CONTOURS TO SEPARATE TWO DIFFERENT ANATOMICAL AREAS

45. VISUALIZATION TOOLS MULTIPLE WINDOWS

46. IMAGE MAGNIFICATION

47. DISTANCE AND ANGLE

48. COORDINATES

49. HIGHLIGHTING

50. CT HISTOGRAM

51. ROI

52. ROI AND MAGNIFICATION