Understanding Ultrasound

High-frequency sound waves are passed through the skin with a special device. The echoes produced when the sound waves strike certain tissues is converted to an image on paper or a TV monitor.

• Breast: No Preparations.
• Biophysical: No Preparations.
• Renal: No Preparations.
• Transvaginal: No Preparations.
• Abdominal Sonogram: do not eat or drink for 8 hours prior to exam.
• Pelvic Sonogram: you must DRINK and RETAIN four 8 oz. glasses of water one hour before the exam. Do not empty bladder.
• Obstetrical:     
  • 1^st Trimester: 32oz of water 1 hour prior to exam.
  • 2^nd Trimester: see above.
  • 3^rd Trimester: 2 8oz. glasses of water 1 hour prior to exam until pt. is about 7 months.