Hysterosalpingography (HSG) is a dye-based radiologic evaluation of the uterus and fallopian tubes. It is used primarily for the workup of infertility as well as for the evaluation of tubal patency post Essure® (Conceptus, Mountain View, CA) procedures. Other indications include the evaluation of women with a history of recurrent spontaneous abortions, postoperative evaluations for women who have undergone reversal of tubal ligation, and assessment of women prior to undergoing myomectomy. The primary role of the procedure is to evaluate the patency of the fallopian tubes . The optimal time for the study to be performed is day 7–12 of the menstrual cycle. This ensures that there is not a pregnancy present and allows for optimal visualization of the endometrium in the proliferative phase.
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