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Diagnostic Ultrasound - Abdomen and Pelvis

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Ovaries<br />

Transvaginal transducer<br />

NORMAL OVARY, VARIATIONS WITH AGE<br />

Anatomy: <strong>Pelvis</strong><br />

Immature follicles<br />

Bowel gas<br />

Immature follicles<br />

Ovarian stroma<br />

Developing follicle<br />

Broad ligament<br />

Cysts<br />

Right ovary<br />

Uterus<br />

Iliac vein<br />

Bowel<br />

(Top) Transverse TV ultrasound of the right ovary in a 18-year-old woman shows an oval ovary with immature follicles. This image also<br />

demonstrates the superior resolution of TV US from ability to bring the ovary to the near field as well as the higher frequencies used.<br />

(Middle) Transverse TV ultrasound of an adult ovary is shown. There are multiple developing follicles of variable size around the<br />

echogenic ovarian stroma (medulla) where the ovarian vessels <strong>and</strong> lymphatics enter <strong>and</strong> exit. Ovulation usually occurs when the follicle<br />

enlarges to between 2.0 <strong>and</strong> 2.5 cm. (Bottom) TV US in a 74-year-old postmenopausal woman demonstrates atrophic right ovary<br />

containing tiny cysts. Normal ovaries are variably detected in the postmenopausal woman because of their small size, lack of follicles,<br />

<strong>and</strong> surrounding bowel loops.<br />

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