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Neuroradiology CT

Highly Specialized Patient Care

Neuroradiology CT is a very specialized area of medical imaging offered by Washington Radiology.  Our physicians who read Neuro-CT exams are highly experienced board-certified neuroradiologists.  They have advanced training and fellowship practice in medical imaging related to health injuries or conditions affecting the head, brain, neck, spine and related structures.  Neuroradiology CT offers an extremely detailed patient assessment.


Washington, DC
University Medical Building
2141 K Street, NW, Washington, DC 20037
P: 202-223-9722 | F: 202-659-2819
HOURS: 7:00 a.m. - 5:00 p.m., Monday-Friday
Limited Services Available

Hours vary by service. See this page for details.

Chevy Chase, MD
Chase Tower
4445 Willard Avenue, Suite 200, Chevy Chase, MD 20815
P: 301-654-4242 | F: 301-907-7414
HOURS: 7:00 a.m. - 5:00 p.m., Monday-Friday

Hours vary by service. See this page for details.

Sterling, VA
Lakeside @ Loudoun Tech Center I
21351 Ridgetop Circle, Suites 100, 150, Sterling, VA 20166
P: 571-434-0140 | F: 571-434-0144
HOURS: 7:30 a.m. - 5:00 p.m., Monday-Friday
7:30 a.m. - 4:00 p.m., September 25 (screening mammograms only)
7:30 a.m. - 4:00 p.m., October 2 (screening mammograms only)

Preparing For Your CT Exam*

Patient peace of mind starts with the right preparation. To obtain the best possible study results, it is important that you follow the instructions below. 

During scheduling, a Washington Radiology team member will review with you the preparation instructions specific to your CT exam.  These instructions are repeated here for easy reference.

In addition to the written order from your doctor, please remember to bring to your appointment any prior images or reports from outside Washington Radiology if related to the reason for your visit with us.  

If you have any follow-up questions about these important CT preparations, please contact the Washington Radiology office where your exam is scheduled and ask to speak with the Nurse.

A list of locations where Barium and other exam preparations may be picked up is at the bottom of this page.


*Contrast Policy for CT Exams:

Washington Radiology requires a Creatinine lab result within 30 days prior to the CT for contrast patients who are age 60+, diabetic, take Metformin/any Metformin-drug combination, take medicine for high BP, have kidney disease, a single kidney, kidney surgery, kidney transplant or dialysis. Please fax result to Washington Radiology prior to your appointment.


CT Premedication Protocol for Patients with Allergies to Non-Contrast Products or Food

A 2-drug pretreatment regimen is recommended to help reduce the likelihood of an allergic reaction in patients requiring IV contrast. This pretreatment regimen is necessary for your care if you have ever had an allergic reaction to ANY substance, medication or food, that involved moderate-to-severe allergic-like reactions such as marked facial or body swelling, severe difficulty breathing, laryngeal edema, body hives/diffuse rash, profound drop in blood pressure, cardiopulmonary arrest or other allergic-like reactions requiring hospitalization, ER treatment, or the need to carry an Epi pen.


Premedication Regimen

1. Medrol (Methylprednisolone) 32mg Tablet

Take one tablet 12-14 hours prior to exam and one tablet 2 hours prior to your exam. If the Medrol strength per tablet is less than 32 mg, multiple tablets may be taken to equal 32 mg (i.e. 8 tablets of 4 mg strength). We will provide a written prescription for Medrol which can be picked up at any office. We can also fax the prescription to the pharmacy of your choosing. Please have this phone number available for us. If your exam includes oral contrast (Barium), the written prescription for Medrol and the Barium can be picked up at the same time. Medrol is a corticosteroid. You must check with your referring physician for any contraindications or medical conditions before taking Medrol.

2. Benadryl (Diphenhydramine) 50mg Liquid or Tablet

Take 50mg (liquid or tablet) 1 hour before your scheduled CT scan. Benadryl is available as an over-the-counter medicine; no prescription is needed. Benadryl causes drowsiness; read package instructions carefully. You must arrange for transportation to and from your appointment.


CT Scan with IV Contrast

This examination lasts about 30-60 minutes. 

The day of your appointment: Four hours prior to your exam drink ONLY CLEAR LIQUIDS. 


CT Scan of the Abdomen, Abdomen/Pelvis or Pelvis with IV Contrast and Barium Oral Contrast

This examination lasts approximately 30-60 minutes. Please arrive 30 minutes prior to your appointment time. Note: Oral contrast may be refrigerated but do not add water or ice.

Morning Appointments:

  • At 9 pm the evening prior to your examination drink 1/2 bottle of barium.

  • Four hours prior to your examination drink ONLY CLEAR LIQUIDS. 

  • Two hours prior to your examination drink 1/2 bottle of barium.

Afternoon Appointments:

  • At 8am the day of your examination drink first 1/2 bottle of barium.

  • Four hours prior to your examination drink ONLY CLEAR LIQUIDS. 

  • Two hours prior to your examination drink 1/2 bottle of barium.



Washington Radiology preparations may be picked up at the following locations between 8:00 a.m. and 4:30 p.m, Monday - Friday.  Be sure to bring your written order to pick up your preparation. 

2141 K Street, NW, Suite 900, Washington, DC 20037

10215 Fernwood Road, Suite 103, Bethesda, MD 20817

4445 Willard Avenue, Suite 200, Chevy Chase, MD 20815

12505 Park Potomac Avenue, Suite 120, Potomac, MD 20854

3022 Williams Drive, Suite 200, Fairfax, VA 22031

21351 Ridgetop Circle, Suite 100, Sterling, VA 20166


Water, coffee or tea (with sugar but without cream/milk/artificial whitener), clear soft drinks, consommé (other clear soups, strained), clear fruit juices (no pulp) including apple/cranberry/ grape and strained orange juices. No dairy products, no solid food, no jello. IMPORTANT: Eating solid foods when clear liquids are specified may require rescheduling your appointment.