To evaluate the probability, effectiveness and safety of aspiration and ethanol coagulation of recurrence ovarian chocolate cysts guided by general ultrasound probe.

Investigation of the contamination of medical ultrasonic probes and disinfecting measure;

Selection of ultrasonic probe for oil pipeline detection and analysis on acoustic field;

By sending a micro-ultrasonic probe into coelom through biopsy channel of electronic endoscope,ultrasonic endoscope system can not only acquire pictures of the alimentary canal mucosal surface by direct observing,but also get images of the full histology of the digestive organs by ultrasonic scanning.

Objective To discuss the disinfection control strategy of microbial contamination on ultrasound probes and to prevent nosocomial infection.

Analyzes the failures and causes of ultrasound probe the key part of ultrasound equipment and describes the solutions for them.