1. Ultrasound Michael Baram

2. Objectives Basic science Terminology Examples –Movies What we should and should not be doing

3. Disclosures Becoming more of a techy. I have lost my touch for subclavians I tried to trade my kids in for a machine (It did not work)

4. Anatomy of a wave Velocity = wavelength x frequency High frequency wave travel more linear and reflected easier

5. Velocity through material Velocity of a wave is a constant through a given substance (at a constant temperature) Assumption made all velocity about 1540 m/s MediumSpeed (m/s) Blood 1566 Brain1505-1612 Fat1446 Kidney1567 Liver1556 Muscle1542-1656 Bone2070-5350 Water 1480 Air333 Brass4430

6. How waves are made

7. US- the perfect child

8. Attenuation

9. Reflection of Beam Partial reflection of a sound beam occurs at a tissue interface.

10. Breast Mass or Cyst?

11. Different Waves have different degrees of attenuation

12. Low vs High Frequency 4 MHz 7 MHz

13. Reasons for attenuation

14. GAIN

15. Modes

19. Attenuation

21. Shadowing The lateral edge shadow is a thin acoustic shadow that appears behind edges of cystic structures.

22. Shadowing artifact is similar to reverberation

24. Terminology Image Interpretation: Anechoic / Echolucent - Complete absence of returning sound waves, area is black. Hypoechoic - Structure has very few echoes and appears darker than surrounding tissue. Hyperechoic / Echogenic - Opposite of hypoechoic, structure appears brighter than surrounding tissue.

25. Terminology Image Acquisition / Probe Positions: Transverse Plane - Also known as an axial plane or cross section, separates the superior from the inferior, or, the head from the feet. Sagittal Plane - Oriented perpendicular to the ground, separating left from right. The "midsagittal plane" is a sagittal plane that is exactly in the middle of the body. Coronal Plane - Also known as the frontal plane, separates the anterior from the posterior or the front from the back. Oblique Plane - The probe is oriented neither parallel to, nor at right angles from, coronal, sagittal or transverse planes. Longitudinal Plane - The longitudinal plane is perpendicular to the transverse plane an can be either the coronal plane or sagittal plane.

26. Probe Types

27. http://www.youtube.com/watch?v=fntJ7GLj CSUhttp://www.youtube.com/watch?v=fntJ7GLj CSU http://www.youtube.com/watch?v=VF_OG TSdSlo&feature=channelhttp://www.youtube.com/watch?v=VF_OG TSdSlo&feature=channel http://www.youtube.com/watch?v=Sb1bM8 MnpRk&feature=channelhttp://www.youtube.com/watch?v=Sb1bM8 MnpRk&feature=channel http://www.youtube.com/watch?v=XpN1R 7A0r_0&feature=channelhttp://www.youtube.com/watch?v=XpN1R 7A0r_0&feature=channel

28. What we Should and Should Not DO

29. Thank you Any questions

30. Reflection of Beam Partial reflection of a sound beam occurs at a tissue interface.

31. Fast Exam Subxiphoid

35. bladder

36. http://folk.ntnu.no/stoylen/strainrate/Ultras ound/http://folk.ntnu.no/stoylen/strainrate/Ultras ound/ http://www.sonoguide.com/physics.html