During IUI and IVF cycles, while the woman is on medication for ovulation induction, it is important that the follicular growth be monitored by ultrasonography.
Transvaginal ultrasonography(TVS) is used for follicular monitoring. During the cycle, a TVS is usually done on day1 (baseline) and then repeated on day4/5, day8/9 and day11.
This helps in monitoring the number and size of the follicles, determining the day of the trigger injection(for rupturing the egg) and the day of the egg retrieval for IVF and or the day for IUI.
What do we check for on the follicular monitoring ultrasound scan?
The scan is performed transvaginally as it gives much clearer images; a full bladder is not required.
The scan will evaluate the size, shape and condition of the:
- Uterus / womb
• lining of the womb / endometrium
• both ovaries
• pelvic area / adnexa
The follicle tracking ultrasound scan will count the number and measure the maximum diameter of each follicle in mms.
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