Fairfax Radiological Consultants

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Breast Ultrasound

What is Breast Ultrasound?

A Breast Ultrasound is a procedure that uses sound waves to create an image of the tissues inside your breast. Used in conjunction with a Mammogram, a Breast Ultrasound identifies the composition of a lump in the breast to determine whether it is a cyst (fluid filled) or a solid mass. Mammography alone cannot differentiate between a cystic mass and a solid mass. That is why physicians often recommend a Breast Ultrasound as a follow-up to a Mammogram when a mass is discovered.

Common Questions

  • Why would my physician recommend a Breast Ultrasound?

    If a lump is found during a self-examination, physical or Mammogram, a Breast Ultrasound will help determine whether the lump is a cyst (filled with fluid) or solid. If there is a finding on the Mammogram that needs further investigation, the Radiologist will request an Ultrasound. Breast Ultrasound is also the preferred imaging procedure if you are under 30, breastfeeding or pregnant, due to the increased density of breast tissue and radiation exposure.

  • What should I expect during a Breast Ultrasound?

    If this is your first Ultrasound, you may not be sure what to expect. Not to worry, we are here to guide you every step of the way. During a Breast Ultrasound, warm gel is placed over the area to be tested and a probe is gently passed back and forth on your skin over the area to pick up sound waves, which are converted into an image on a screen.

  • How do I schedule a Breast Ultrasound with Fairfax Radiology?

    Contact our Scheduling Department for an appointment:

    Phone: 703.698.4488 Monday through Friday 8am to 6pm

    Fax: 703.698.0864

    Or click here to make an appointment request

    Please have your written physician order and your insurance card in hand when making your appointment.

  • When are appointments offered for Breast Ultrasounds?

    For your convenience, appointments are available mornings, afternoons and weekends at the locations listed below. Learn more about each location.

  • Can I bring my children to my imaging appointment?

    All imaging procedures require that only the patient remain in the room during the exam. Because the patient requires our full attention, we cannot provide supervision for any accompanying children. If you wish to bring your children, you must arrange for another adult to supervise your children during your procedure. Families of Obstetrical patients will be allowed in the room for a limited period of time, but only when an adult accompanies the minor children.

Ellie S. Kwak, M.D.

Ellie S. Kwak, M.D.

Breast Imaging
Joined Practice:
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Medical School

Tufts University School of Medicine
Completed 2012


Steward Carney Hospital
Completed 2013


Columbia University
Completed 2017


Brigham and Women's Hospital
Breast Imaging
Completed 2018

Board Certification

American Board of Radiology

Professional Affiliations & Memberships

Radiological Society of North America
New York Roentgen Ray Society
Society of Breast Imaging
American Roentgen Ray Society

Available at the following locations

Breast Center of Fairfax

Breast Center of Fairfax

8260 Willow Oaks Corporate Drive
Suite 200
Fairfax, VA 22031
United States

Breast Center of Loudoun

Breast Center of Loudoun

Peterson Family Breast Center

19465 Deerfield Avenue
Suite 105
Lansdowne, VA 20176
United States

Centreville-Clifton Imaging Center

Centreville-Clifton Imaging Center

6211 Centreville Road
Suite 400
Centreville, VA 20121
United States

Reston-Herndon Breast Imaging Center

Reston-Herndon Breast Imaging Center

106 Elden Street
Suite 16
Herndon, VA 20170
United States