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Gynaecological Ultrasound

Gynaecological Ultrasound. Felipe Moretti, MD Griff Jones, MD, FRCS Assistant Professor – UOttawa Maternal Fetal Medicine Division. Basic physics Gynaecology. Ultrasound used for medical purposes is from one MHz (one million cycles per second) to 20 MHz.

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Gynaecological Ultrasound

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  1. Gynaecological Ultrasound Felipe Moretti, MD Griff Jones, MD, FRCS Assistant Professor – UOttawa Maternal Fetal Medicine Division

  2. Basic physics Gynaecology

  3. Ultrasound used for medical purposes is from one MHz (one million cycles per second) to 20 MHz.

  4. Higher frequency wave assesses the object more often in any given time period. This results in more information and allows sharper images

  5. If each wave represents a path, the walker uses the same energy to reach point X. Low frequency waves penetrate deeper into the tissues than high frequency waves

  6. Summary Low frequency sound waves can penetrate more deeply but have less definition than high frequency waves The farther something is away from the probe, the worse the resolution

  7. In OB GYN Ultrasound – • We use low frequency probes for abdominal scanning • We use high frequency probes for transvaginal scanning

  8. Gyne Ultrasound Assess: Uterine pathologies (ex. Fibroids); Endometrial pathologies (ex.polyps); Ovarian pathologies (cysts)

  9. Uterus

  10. Uterine Position

  11. Uterus Transvaginal

  12. Uterine Fibroid

  13. Uterine Enlargement

  14. Difficult Fibroids

  15. Endometrium changes Throughout the cycle

  16. Anteverted uterus with follicular endometrium Retroverted uterus with secretory endometrium

  17. Abnormal Endometrium

  18. Cavity Enlargement

  19. Ovaries

  20. Trans-abdominal Ovarian Scan

  21. Transvaginal Ovarian Scan

  22. Transabdominal Transvaginal Depth of penetration was not an issue here. But the improved resolution due to the higher frequency of the TV probe shows ovarian substance and allows a diagnosis of polycystic ovaries

  23. Normal Ovary

  24. Ovarian appearance changes throughout the menstrual cycle

  25. Cystic Follicle

  26. Cyst Complications

  27. resolved 2 weeks later

  28. Ovarian Masses

  29. Thank You

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