What is the Origin of Saline Infusion Sonohysterography?

The term combines 'saline infusion' with 'sonohysterography,' the latter being derived from 'sono' (sound), 'hystera' (uterus), and 'graphein' (to write or record). It developed as an enhancement to standard transvaginal ultrasound, offering superior detail of the endometrial surface and its pathology. This diagnostic tool is fundamental in modern reproductive endocrinology and gynecology for structural assessment.

What is the Mechanism of Saline Infusion Sonohysterography?

The sterile saline acts as an anechoic contrast medium, creating a clear interface between the fluid and the endometrial tissue within the uterine cavity. This contrast allows the ultrasound waves to delineate polyps, submucosal fibroids, or scar tissue that might be obscured in a non-distended uterus. The resulting images provide critical structural information for clinical decision-making regarding uterine health and reproductive capacity.

Saline Infusion Sonohysterography ∞ Area

Saline Infusion Sonohysterography

Meaning

Saline Infusion Sonohysterography (SIS), also known as sonohysterogram, is a specialized ultrasound technique used to evaluate the uterine cavity and endometrium. This procedure involves instilling sterile saline solution into the uterus to gently distend the cavity, allowing for clearer visualization of the endometrial lining and detection of subtle intrauterine abnormalities. It is a high-resolution, non-invasive method often used in the workup for infertility or abnormal uterine bleeding.