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Wfumb slideseries the view in the body sonoanatomy
- 1. WFUMB Slide Series World Federation for Ultrasound in Medicine & Biology The view in the body – Examination technique and Sonoanatomy October 2019 1 The information contained in these slides is intended for health professionals and is for general information only. Whilst care is taken by WFUMB to ensure the material is up to date WFUMB does not guarantee the accuracy of the information contained in them and the opinions expressed are those of the author and not of WFUMB. The slides may be used for presentations in whole or in part but the author and WFUMB shall be acknowledged and identified as the source of the material.
- 2. The view in the body – Examination technique and Sonoanatomy Prof. Alina Popescu, MD, PhD Department of Gastroenterology and Hepatology University of Medicine and Pharmacy WFUMB Center of Education EFSUMB Ultrasound Learning Center Timişoara, Romania
- 4. Ultrasound • It is a relatively inexpensive method • Non-irradiating • accessible • It can be repeated whenever necessary • Easy to use for patient follow-up • Real-time imaging technique • UNDERSTANDING THE PHYSICAL PRINCIPLES THAT ARE THE BASIS OF ULTRASOUND IS ESSENTIAL AND IS PART OF THE BASIC NOTIONS IN THE PREPARATION OF USERS !!!
- 5. • Sound is the mechanical energy that is transmitted through an environment through the vibration of molecules. Diagnostic frequencies 1-20 MHz
- 6. Ultrasound – Technical principle Adopted from: https://upload.wikimedia.org/wikipedia/commons/thumb/0/07/Sonar_Principle_EN.svg/2000px- Sonar_Principle_EN.svg.png
- 8. BASIC PRINCIPLES • The US beams does not exist in a vacuum, and their spread in the gaseous environment is limited • The US beams propagate perfectly through liquid • To limit the air gap between the transducer and the skin of the examined subject, that would make it impossible to transmit the waves - gelum. http://americanhistory.si.edu/blog/my- ultrasound-used-look-what
- 9. Choosing a probe: depth vs. resolution Low Frequency • High depth penetration • Low resolution High Frequency • High resolution • Short depth penetration abdomen 3,5-5 MHz bowels, thyroid 7,5-9 MHz
- 10. How do we adjust the ultrasound image?
- 11. Depth
- 12. Gain
- 14. caudalcranial ventral dorsal Adopted from: N. Heyder, Einführung in die Ultraschallanatomie longitudinal section Longitudinal Section
- 15. Adopted from: N. Heyder, Einführung in die Ultraschallanatomie
- 16. Transverse Section leftright ventral dorsal transverse section Adopted from: N. Heyder, Einführung in die Ultraschallanatomie
- 17. Adopted from: N. Heyder, Einführung in die Ultraschallanatomie
- 18. Sagital section in the epigastrum
- 19. Sagital section in the epigastrum
- 29. Last Slide 29 WFUMB Slide Series The view in the body – Examination technique and Sonoanatomy Prepared by Prof. Alina Popescu