Equine Reproductive Procedures. Группа авторов. Читать онлайн. Newlib. NEWLIB.NET

Автор: Группа авторов
Издательство: John Wiley & Sons Limited
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Жанр произведения: Биология
Год издания: 0
isbn: 9781119555933
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on ultrasound. The corpus hemorrhagicum matures into the corpus luteum within 2–5 days and takes on a more echogenic (whiter) ultrasonographic appearance.

Photo depicts hemorrhagic anovulatory follicle. The distinguishing feature was swirling, unclotted blood in the former follicular lumen. Photo depicts echogenic strands within a follicular lumen early in the progression toward a luteinized anovulatory follicle.

      Ultrasound can also help differentiate pathologic conditions of the ovary, such as persistent anovulatory follicles, ovarian tumors, and cystic structures (Figures ). Persistent anovulatory follicles are initially recognized by the presence of multiple echogenic particles within the follicular fluid. Anovulatory follicles often subsequently develop numerous echogenic strands throughout the follicular lumen and usually completely fill in with echogenic material.

      Uterine Ultrasound Features

Photo depicts a pair of luteinized anovulatory follicles. Photo depicts parovarian cyst. The cystic structure (arrow) is adjacent to the ovary.

      Figure 8.9 Parovarian cyst. The cystic structure (arrow) is adjacent to the ovary.

Photo depicts granulosa cell tumor consisting of multiple cysts within an enlarged ovary. Photo depicts normal ovary contralateral to the ovary with a granulosa cell tumor. This ovary is small and inactive.
Edema Score Edema Amount Description Ultrasonographic Image
0 None No edema present; individual endometrial folds not discernable homogenous echotexture typical of diestrus or anestrus Photo depicts an Ultrasonographic Image with edema score zero.
1 Slight Endometrial folds easily observed in a light “spoke wheel” pattern; edema may be more evident in uterine horns than uterine body Typical of early estrus as the dominant follicle is developing or late estrus prior to or at the time of ovulation Photo depicts an Ultrasonographic Image with edema score one.
2 Moderate Endometrial folds increased in thickness; edema pattern obvious throughout uterus Typical of mid‐estrus and usually represents the peak estrogen effect noted 1–2 days prior to ovulation Photo depicts an Ultrasonographic Image with edema score two.
3 Heavy Large distended endometrial folds; exaggerated degree of edema Not typical of a normal mare in estrus; may be associated with uterine inflammation; sometimes called hyperedema Photo depicts an Ultrasonographic Image with edema score three.

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Classification Initials Score
No fluid 0 0
Trace (<1.0 cm depth) T 1
Small volume (1–2 cm depth) S 2