Most ultrasounds are done using a transducer on the surface of the skin. Sometimes, however, doctors and technicians can get a better diagnostic image by inserting a special transducer into one of the body's natural openings:
• Transvaginal ultrasound: It is a transducer wand is placed in a woman’s vagina to get images of her uterus and ovaries.
• Transrectal ultrasound: It is sometimes used in the diagnosis of prostate conditions.
• Transesophageal echocardiogram: It uses the transducer probe in the esophagus so that the sonographer can obtain clearer images of the heart.