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School of Medicine
Request an Appointment
Johns Hopkins Medical Imaging offers a variety of exams including MRI, CT, mammography, ultrasound, DEXA and X-ray. Please call 443-997-7237 to request an exam with Johns Hopkins Medical Imaging. X-Ray, DEXA and some CT exams are performed on a walk-in basis.
Referring providers, please complete the Johns Hopkins Medical Imaging requisition form.
Call Center Hours
Monday – Friday from 7:30 a.m. – 6 p.m.
Saturday from 8 a.m. – noon.
What to Bring to Your Appointment
Patients should bring the following items to their appointment:
- Your picture ID and all insurance cards.
- Your HMO/MCO/POS referral form from your primary care physician. The referral should authorize your office visit, procedures and lab work.
- If you arrive without your necessary authorization and/or referral, you will be expected to pay for your visit prior to receiving services or opt to reschedule your appointment.
- Worker's Compensation cases MUST bring authorization from your claims adjustor.
- Complete name, address, phone number and fax number for your referring physician.
- When appropriate, please bring with you copies of any medical notes, lab results, biopsies, X-ray results, etc.
- Please plan to pay any required co-payments and deductibles and past-due balances at the time of your visit.
- Bring your updated medication list with you to your appointment. Include all prescription and over-the-counter medications, including vitamins and herbal products. Keep this list with you at all times and provide a copy to your primary care provider.
Annual Screening Exams
- For annual screening mammograms, you do not need a physician referral form.
- You will need to provide our staff with the name of the physician who you want to receive your mammography report.
- If a follow-up breast imaging exam is necessary, you will need your physician to complete a referral form.
Exams Using Contrast
In order to improve visibility of structures and organs inside the body, your physician may order an MRI, CT or X-ray exam that uses a contrast material.
Different types of contrast materials, such as gadolinium, iodine or barium sulfate, are used for different exams. Depending on the exam, the contrast may be inserted through an IV or given by mouth.
Recent Lab Results
A blood test measuring creatinine levels is performed in advance of a MRI or CT exam using contrast to evaluate kidney function. This is to screen for potential pre-existing renal insufficiency in patients at high risk for contrast-induced nephropathy. Risk factors will be determined by the radiologist but include:
- Aged 60 or older
- History of renal disease, renal transplant, total nephrectomy or sickle cell crisis
- Diabetes mellitus
- Liver disease
- Recent surgery
- Acute deep vein thrombosis
- Previous allergic reaction to MRI or CT exam using galladenium contrast.
If you have any of these risk factors, you must have a blood test examining your kidney function within the last 30 days. You may either fax this to the office in advance or bring a copy with you to your radiology appointment.
If you do not have recent lab work, you might be eligible to receive the blood test on site when you arrive for your appointment.
Please let the office know when you schedule the exam if you have an allergy to iodine. Your doctor may prescribe medications to take in advance of the exam.
For Additional Information
For additional information about a particular location, specialists or procedures, please call:
- Bethesda: 301-897-5656
- Columbia: 443-574-5800
- Green Spring Station: 410-583-2700
- White Marsh: 443-442-2406