Which imaging modality is preferred for diagnosing ovarian cysts?

Pelvic/transvaginal ultrasound is preferred for diagnosing ovarian cysts due to its ability to provide clear images of the ovaries and surrounding structures while being non-invasive and safe for patients. Ultrasound is particularly effective in differentiating between simple cysts, which are generally benign, and more complex cysts that may require further evaluation.

Furthermore, the use of transvaginal ultrasound allows for closer proximity to the pelvic organs, enhancing visualization and increasing diagnostic accuracy. This method can also be performed quickly, making it a practical choice in many clinical settings.

Other imaging modalities, such as CT scans and MRIs, while useful for a broader array of conditions, are not routinely used as first-line imaging for ovarian cysts due to factors such as cost, availability, and the radiation exposure associated with CT scans. X-ray is not effective for visualizing soft tissue structures like the ovaries, making it unsuitable for diagnosing ovarian cysts.