Anal fistula ultrasound contrast liquor

Abstract

The invention provides novel anal fistula ultrasound contrast liquor. The contrast liquor comprises the ingredients as follows: 0.1-0.5% of hydrogen peroxide solution : 0.05-0.5% lidocaine = 5:2 (v / v). The contrast liquor also comprises methylene blue solution. The anal fistula ultrasound contrast liquor disclosed by the invention enhances the ultrasound contrast inside the rectum cavity, has obviously higher accuracy rate than a conventional ultrasound for diagnosing the internal orifice and the primary tributary canal of the complex anal fistula, can provide more accurate anatomical morphology and position description for clinic, and basically cause no pain to patients during check.

Description

technical field [0001] The invention belongs to the field of medicine, in particular to a contrast fluid for ultrasonic diagnosis, more specifically to an ultrasound contrast fluid for anal fistula. Background technique [0002] Anal fistula is a common and frequently-occurring disease in anorectal department, and surgery is the only way to cure anal fistula [1] . In the surgical treatment of anal fistula, it is necessary to have a clear judgment on the direction of the anal fistula, the location of the internal opening, the direction and number of the main pipe and branch pipes, and the relationship and position with the sphincter [2] . At present, there are many diagnostic methods for anal fistula, and imaging diagnosis mainly includes fistula X-ray contrast, CT, ultrasound, MRI, etc. [3] . Transrectal ultrasonography (Transrectal ultrasound, TAUS) has the advantages of real-time diagnosis, imaging is not interfered by factors such as visceral peristalsis and respirati...

AI Technical Summary

Problems solved by technology

However, due to the superficial location of the internal opening, it is often located in the near-field echogenic area of ​​ultrasound, so it is difficult to identify it with conventional TAUS [4]

When TAUS is used to display the anatomical structure of the fistula and diagnose the internal opening, the diagnostic accuracy varies greatly due to the influence of many factors such as the performance of the inspection instrument, the resolution of the ultrasound probe, the position of the internal opening, and the cleanliness of the patient's bowel. [5]