Conventional and magnetic resonance hysterosalpingography in assessing tubal patency-A comparative study

Tubal factors, one of the leading causes of female infertility, have been conventionally evaluated by hysterosalpingography (HSG). The role of magnetic resonance imaging (MRI) in assessing female infertility is gaining importance because of its inherent efficiency in detecting structural abnormalities. Magnetic resonance hysterosalpingography (MR HSG) is less invasive and avoids exposure of ovaries to ionizing radiation. Its utility is extrapolated to visualize fallopian tubes.

To assess the diagnostic accuracies of dynamic MR HSG and conventional HSG (cHSG) in identifying tubal patency in women with infertility using diagnostic laparoscopy (DL) as gold standard.

A prospective study of 40 patients was conducted over a period of 6 months. The patients were subjected to MR HSG followed by cHSG during the preovulatory period. If tubes were blocked, the patients were subjected to DL in the next menstrual cycle. If the tubes were patent and there was failure of conception, they were subjected to DL in the interval of 3 months.

Twenty-four patients had bilateral tubal spill which was confirmed using cHSG and DL. One patient had discordant MR HSG and cHSG results and six patients had discordant MR HSG and DL results. No statistical difference was observed between MR HSG and cHSG.

Pelvic MRI is an inevitable tool in infertility evaluation. MR HSG can be used in addition as it avoids exposure of the reproductive organs to radiation and has the same efficacy as cHSG.