How Should You Prepare for an Ultrasound?

Ultrasound Scan

Unlike an X-ray, an ultrasound uses no radiation. Instead, it produces medical images by transmitting high-frequency sound waves. If you’re expecting to undergo ultrasound imaging near San Antonio, it’s always a good idea to call the medical images center ahead of your appointment to inquire about any special steps you may need to take to prepare. For an ultrasound, preparation generally depends on the body part that is going to be evaluated. Much of the time, you may not need to take any special steps. However, if you are expecting to undergo an ultrasound of the gallbladder, you’ll be asked to refrain from eating and drinking for up to six hours prior to your appointment.


If you’re going to a medical images center for an ultrasound of your pelvic region, you’ll need to have a full bladder. Drink plenty of fluids and avoid urinating before the exam to enable the technologist to capture clear images of the pelvic structures. When you arrive at the medical images center for your appointment, you’ll be asked to remove jewelry. Since you’ll also be asked to change into a hospital gown, it can be helpful to wear comfortable clothing that is easy to remove.

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