Diagnostic accuracy of saline infusion sonography in the evaluation of uterine cavity abnormalities prior to assisted reproductive techniques: a systematic review and meta-analyses.

The diagnostic accuracy of a 2-D transvaginal scan, which is commonly employed to evaluate the regularity and shape of the uterine cavity in subfertile women, is relatively poor compared with other diagnostic modalities like saline infusion sonography (SIS) or hysteroscopy. SIS is a minimally invasive, cost-effective and acceptable diagnostic modality. Therefore the aim of this systematic review was to assess the diagnostic accuracy of SIS in the evaluation of the uterine cavity in subfertile women.