Hysterosonography

Hysterosonography is also known as infusion Sonohysterography, is a non-invasive technique using a slow infusion of sterile saline into the uterine cavity during ultrasound imaging. This procedure allows the physician to evaluate abnormalities of the endometrium (lining of the uterus).

Which ultrasound Scanner is suitable for Hysterosonography?

During Hysterosonography a high-frequency endovaginal transducer is needed. For this reason, the Convex and Transvaginal Color Doppler Double Head Wi-Fi Ultrasound Scanner CTC-3.1 is highly recommended to our gynecologist clients.

The procedure begins with placing the Transvaginal probe in the vagina. Then, a speculum is introduced and a narrow catheter is placed, through the cervix, and into the uterine cavity. The ultrasound imaging guides the practitioner while sterile saline(saltwater) is put into the uterus. The saline solution fills the uterus, helping to outline the uterine walls and cavity, it outlines the lesion and allows for easy visualization and measurement. This shows abnormalities such as fibroids, polyps, or scar tissue inside the uterus.

As the uterus enlarges, a lower-frequency transducer must be used to visualize the organ. The 7.5-MHz vaginal probe works best with a normal or minimally enlarged uterus. The 5.0-MHz vaginal probe usually images a uterus up to the size of 12 weeks’ gestation. If the uterus is larger than this, transabdominal imaging with a 2.5- or 3.5-MHz probe is required. Since the CTC-3.1 has a Double head it is more practical and affordable than buying separate single-headed probes.

Precatheterization images should be obtained and recorded, in at least 2 planes, to show normal and abnormal findings. These images should include the thickest bilayer endometrial measurement, which includes the anterior and posterior endometrial thicknesses, obtained in a sagittal view.

Once the uterine cavity is filled with fluid, a complete survey of the uterine cavity should be performed and representative images obtained to document normal and abnormal findings. If a balloon catheter filled with saline is used for the examination, images should be obtained at the end of the procedure with the balloon deflated to fully evaluate the endometrial cavity, particularly the cervical canal and lower portion of the endometrial cavity.

Furthermore, Hysterosonography is a very safe procedure and usually is performed without incident. Serious complications are rare. The most common serious complication with it is pelvic infection. However, this occurs less than 1% of the time and usually occurs when a woman also has a block or infection of the fallopian tubes.

References: SalineInfusion, Hysterosonography, Sonohysterography