Lesson 18 (Part 6) Flashcards
(27 cards)
How do you measure the volume of the ovary?
Length x width x height (AP) x 0.523
What is the mean ovarian volume in the first year?
1cc
What is the mean ovarian volume in the 2nd year?
0.7cc
What does the size of the ovary depend on?
Age
What years does the ovarian volume considered stable?
1-5 years
What years does the ovarian volume gradually increase?
5-menarche
- 4cc
What is the mean ovarian volume for a menstruating adult female?
6.8cc
What is the upper limit ovarian volume for a menstruating adult female?
18cc
What is the mean ovarian volume post menopause?
1.2-5.8cc
What volume is considered abnormal in post menopause for volume?
Over 8cc
What is the echotecture for the ovary?
Relatively homogenous
What is the echogenicity for the ovary? (3)
- Central, more echogenic medulla
- Small, well defined anechoic or cystic follicles may be seen in periphery in the cortex
- Echogenic ovarian foci
What is commonly seen in the ovaries?
Echogenic ovarian foci
- non shadowing
- usually in the periphery
What could focal calcification be?
Stromal reaction previous hemorrhage or infection
- should follow up if seen in early neoplasm
What are follicles stimulated by in early proliferative phase?
Follicle stimulating hormone
- FSH
When does the ovary increase in size until during the early proliferative phase?
Increase in size until day 8 or 9
What happens to the follicles during the early proliferative phase?
One becomes dominant
What size does the dominant follicle reach at ovulation?
2-2.5cm
What develops if fluid in one of the nondominant follicles is not resorbed?
Follicular cyst
Is the follicular cyst vascular?
No
What develops after ovulation?
Corpus Luteum
How is the corpus luteum seen in an ultrasound?
Seen as a small, hypoechoic or isoechoic structure in periphery of ovary
- empty house
What does the corpus luteum do before menstration?
It involutes
- curls up?
Why are you less likely to see the ovaries after a hysterectomy?
Due to loss of normal anatomic landmarks
