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Knobology

Knobology. Kevin deWeber, MD, FAAFP, FACSM Military Sports Medicine Fellowship Director Uniformed Services University, Bethesda, MD Slides from Andrews Institute Ultrasound Course 2011 With a few additions. Courtesy: Sean N. Martin, DO, CAQSM Capt, USAF Faculty, Family Medicine Residency

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Knobology

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  1. Knobology Kevin deWeber, MD, FAAFP, FACSM Military Sports Medicine Fellowship Director Uniformed Services University, Bethesda, MD Slides from Andrews Institute Ultrasound Course 2011 With a few additions. Courtesy: Sean N. Martin, DO, CAQSM Capt, USAF Faculty, Family Medicine Residency Eglin AFB, Florida

  2. What is “Knobology??” “The fabricated word that implies the study of gadgets and gizmos (i.e “knobs”) found on machinery used in musculoskeletal ultrasound.” ~SNM 2008 Wald, Matthew L., For Air Traffic Trainees, Games With a Serious Purpose, New York Times, Oct. 7, 2008 2003 December, C. A. Mobley and Michael Benson, The Complete Idiot's Guide to Aircraft Carriers, page 247, Alpha Books

  3. Knobology is Serious Stuff

  4. Agenda Basic Controls - Mode - Frequency Image Balance - Gain - TGCs - Depth - Focal Zones Function Miscellaneous - Panoramic View - Capturing Images - Cross Beam (GE), MultiBeam (Sonosite) Examples provided by GE Logiq E, Sonosite M Turbo, Terason T3200

  5. Terason T3200 Ge LogiqE Sonosite M-Turbo

  6. Basic Controls - Mode - Frequency Image Balance - Gain - TGCs - Depth - Focal Zones Function Miscellaneous - Panoramic View - Capturing Images - Cross Beam (GE), MultiBeam (Sonosite) Examples provided by GE Logiq E and Sonosite M Turbo

  7. Mode Arc

  8. Mode Arc

  9. Mode Arc

  10. Modes

  11. Modes

  12. Modes • QUALITATIVE • Gives You: • Presence of Vascularity • Direction of Flow • Does Not Give You: • Flow Velocity

  13. B Mode, 2D Mode

  14. Color Flow, Color

  15. Modes • QUANTITATIVE • Gives You: • Presence of Vascularity • Velocity of Flow

  16. B Mode, 2D Mode

  17. Pulsed Wave, Doppler

  18. Modes • SUPER SENSITIVE QUALITATIVE • Gives You: • Very Sensitive Assessment of Presence of Flow • Does Not Give You: • Direction of Flow • Velocity of Flow

  19. B Mode, 2D Mode

  20. B Mode, 2D Mode

  21. Basic Controls - Mode - Frequency Image Balance - Gain - TGCs - Depth - Focal Zones Function Miscellaneous - Panoramic View - Capturing Images - Cross Beam (GE), MultiBeam (Sonosite) Examples provided by GE Logiq E and Sonosite M Turbo

  22. Frequency Higher Frequency: - Less Penetration - More Resolution Lower Frequency: - More Penetration - Less Resolution

  23. Frequency

  24. Frequency

  25. Frequency

  26. Frequency

  27. Basic Controls - Mode - Frequency Image Balance - Gain - TGCs - Depth - Focal Zones Function Miscellaneous - Panoramic View - Capturing Images - Cross Beam (GE), MultiBeam (Sonosite) Examples provided by GE Logiq E and Sonosite M Turbo

  28. Gain Serves to amplify signal being reflected back to transducer Similar to a VOLUME button

  29. Gain

  30. Gain

  31. Gain

  32. Gain

  33. Auto-Optimization Machine provides its own interpretation of the most optimal level of gain For use in B and Doppler Modes only

  34. Auto-Optimization

  35. Auto-Optimize

  36. Auto-Optimization

  37. Auto-Optimization

  38. Feeling a tad overwhelmed yet?

  39. At least you don’t have to memorize all this…..

  40. Basic Controls - Mode - Frequency Image Balance - Gain - TGCs - Depth - Focal Zones Function Miscellaneous - Panoramic View - Capturing Images - Cross Beam (GE), MultiBeam (Sonosite) Examples provided by GE Logiq E and Sonosite M Turbo

  41. TGCs Time Gain Compensation (TGC): Series of EQUALIZER sliders that fine tune the “volume” at various depths * Sonosite makes use of the Near and Far Gain feature for this purpose

  42. TGCs

  43. Far and Near Gain

  44. TGCs

  45. TGCs

  46. Basic Controls - Mode - Frequency Image Balance - Gain - TGCs - Depth - Focal Zones Function Miscellaneous - Panoramic View - Capturing Images - Cross Beam (GE), MultiBeam (Sonosite) Examples provided by GE Logiq E and Sonosite M Turbo

  47. Depth This controls the beam’s field of view Idea is to maximize size of image on the screen while also capturing all pertinent anatomy

  48. Depth

  49. Depth

  50. Depth Centimeters

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