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Medical Imaging offered by Baptist Health System in San Antonio

Preparing For Your Visit

Ultrasound

Abdominal Ultrasound

Abdominal ultrasound studies the upper abdominal compartment to diagnose any abnormalities. Structures studied include the liver, gallbladder, pancreas, kidneys, aorta and spleen.

It is important that you follow these directions closely to minimize the presence of abdominal gas. Gas blocks the sound beam and will interfere with the exam by resulting in unclear images.

  • For morning appointments: Do not eat or drink anything after midnight the night before your exam, with the exception of medications.
  • For noon or later appointments: Do not eat or drink anything for eight hours prior to your exam, with the exception of medications.
  • Please do not smoke or chew gum prior to your exam, as they can increase stomach gas.

Obstetrical Ultrasound

Obstetrical ultrasound studies the fetus while it is still in the womb. It shows the size and position of both the fetus and the placenta. Additionally, the approximate age and weight of the fetus are measured. You will be asked to come into the exam with a full bladder. The reason for this is that sound waves travel more easily through liquids. To obtain images of the necessary internal structures, including the lower end of the uterus, the sound waves will first need to travel through your bladder. A full bladder will enable the ultrasound to produce a better image of the areas being studied.

  • Drink five 8-ounce glasses of non-carbonated fluids one hour before your exam.
  • Please do not empty your bladder prior to the exam.
  • There are no dietary restrictions for this exam.

Pelvic Ultrasound

Pelvic ultrasounds study the uterus, ovaries and their surrounding anatomy. You will be asked to come into the exam with a full bladder. The reason for this is that sound waves travel more easily through liquids, and to obtain images of the uterus and ovaries, the sound waves will first need to travel through your bladder. A full bladder will enable the ultrasound to produce a better image of the areas being studied.

Occasionally the radiologist may need to better visualize the pelvic anatomy to make an accurate diagnosis. In these circumstances, transvaginal ultrasound may be used.

  • Drink five 8-ounce glasses of non-carbonated fluids one hour before your exam.
  • Please do not empty your bladder prior to the exam.
  • There are no dietary restrictions for this exam.

Small Organ Ultrasound

Small organs, such as the thyroid and scrotum can also be studied by ultrasound. There is no special preparation necessary for these procedures.

Length of exam & results

Most exams will take between 45 minutes and one hour. One of our board certified radiologists will read and analyze your exam, and then forward the findings to your referring physician, who will discuss the findings with you.

Take a virtual tour of the Baptist M&S Imaging Center, part of Baptist Health System in San Antonio
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