Locations & Hours | Radiology Services & Procedures | Insurance Info | Policies & Payments Ultrasound Imaging Ultrasound imaging, also called sonography, is a relatively inexpensive, safe and simple procedure with many different applications in both inpatient and outpatient facilities. Ultrasound uses sound waves to visualize internal structures, and there is no exposure to ionizing radiation. This makes it an ideal test during pregnancy or in children. A specially trained technologist, or sonographer performs the procedure. Gel will first be applied to the area of interest. A special “wand,” called a transducer will then be chosen to image the area in question. Immediate images will be captured on a monitor present in the room. These images either will be recorded on film or transferred via computer network. A Board Certified radiologist will then read the images. Studies may have to be compared with earlier exams or other x-ray studies, but results are almost always available within 24 hours. Preparation prior to the study varies depending on the study being performed. Ultrasound is an excellent procedure to evaluate the gallbladder. It is preferable to do this study following approximately 8 hours of fasting. This is because the normal gallbladder contracts with eating, drinking or even smoking, and stones may be hidden. During the test, it is possible to image directly over the area of pain, which may help determine the cause. Ultrasound also allows visualization of the kidneys. It can detect blockage and can also distinguish between fluid-filled cysts, which are benign, and other masses in the kidney, which may require further testing. Ultrasound is often used together with mammography to provide additional information. No preparation is necessary, and the study may be done at the same time as the mammogram or at a later visit. Ultrasound is rarely used to evaluate breasts without mammography, except in very young or pregnant patients. Ultrasound can be used with Doppler to capture moving blood in vessels. This can find clots in veins, as well as areas of narrowing in arteries and may be used as a screening test in people thought to be at high risk for developing these problems. In non-pregnant patients, a full bladder may be necessary to better see the uterus and ovaries. Drinking 32oz – 48oz of liquid 45 minutes prior to a scheduled visit is recommended. Ultrasound provides important information throughout pregnancy. It is the most accurate way of determining the age of the fetus and can recognize normal developmental findings, as well as many serious problems. The ultrasound exam allows the family to see the unborn baby, and in most cases is an exciting and reassuring experience, which may be shared with the father and siblings.