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Diagnostic Services

Breast Imaging at the Marvelle Koffler Breast Centre


About Breast Imaging:

Breast Imaging is located in the Marvelle Koffler Breast Centre at Mount Sinai Hospital, on the 12th floor. It is staffed with very dedicated Receptionists, Technologists, Radiologists, and most importantly our Volunteers. Our expert radiologists work at all locations of the Joint Department of Medical Imaging and you will receive the same quality of care at all our Breast Imaging sites, Mammography Accredited by the Canadian Association of Radiologists.

We provide a wide range of screening and diagnostic examination of the breast utilizing various state of the art technology including digital radiography of the breast, breast ultrasound, and breast interventional procedures including breast MRI referral. The Marvelle Koffler Breast Centre at Mount Sinai Hospital was first in North America to start using digital mammography.


Breast Imaging Staff Radiologists:

Dr. Frederick Au, MBBS, FRCPC
Dr. Meaghen Beresford, MD, FRCPC
Dr. Karina Bukhanov, MD, FRCPC
Dr. Pavel Crystal, MD, FSBI
Dr. Hemi Dua, MD, FRCPC
Dr. Sandeep Ghai, MD
Dr. Rachel Fleming, MD, FRCPC
Dr. Supriya Kulkarni, DMRD, DNR, ABR
Dr. Sophia Pantazi, BSc, MD, FRCPC, ABR
Dr. Anabel Scaranelo, MD, PhD, FRCPC

Hours & Contact:

Monday–Friday, 8:00 AM–4:15 PM
Telephone: 416-586-4422
Fax: 416-586-4714

What to Bring:

Bring with you to your appointment your:

  • White Mount Sinai Hospital card. If you are a new patient, you will need to allow extra time before your appointment to get a card at Mount Sinai Hospital Admitting on the main floor.
  • Government issued health card (OHIP card)
  • Any breast imaging studies, such as a diagnostic mammogram, or breast ultrasound require requisition from your doctor with clinical indication(s).  However, if you are eligible for the Ontario Breast Screening Program (OBSP), you do not need a requisition from a referring physician for scheduling a screening mammogram.   However, our staff will require asking several OBSP eligibility questions.
  • If you have previous mammogram studies performed at other Facilities, please bring it with you to your scheduled appointment for comparison purposes.

Please allow at least 1 hour for your scheduled appointment.  We do our best to stay on time. Unfortunately, your appointment may be delayed by unforeseen Hospital circumstances.


OBSP Routine Screening Eligibility Criteria:

  • 50 yrs of age or older and an Ontario Resident
  • Previous mammogram must be 11 or more months ago
  • NO current breast implants
  • NO previous Breast CA
  • NO current breast symptoms, e.g. recent discovery of lump, bleeding or new discharge from the nipple area or very and reddened breast


OBSP High Risk Screening Program website for referring physician:




Types of Breast Imaging Exam



A mammogram is an image of the breast taken by a digital x-ray machine. Diagnostic mammograms may focus on one area of the breast.

Your breast will be gently but firmly compressed during the exam. This can be uncomfortable but it doesn’t last long. The breast needs to be compressed to separate breast tissue and keep the radiation dose to a minimum.

Breast Ultrasound:

A breast ultrasound uses sound waves to create a picture of the breast.  An ultrasound can show whether a lump in the breast is solid or a fluid-filled cyst found on the mammogram or palpated by your doctor.

Our dedicated technologist will ask you to lie down on a stretcher and raise your arm above your head to perform the exam.   If you have shoulder discomfort or pain, please advise our technologist so we could work with you to modify a comfortable position for your exam.


Mammographic consultation:

Mammographic consultation provides appropriate examination in the best interest of the patient, consultation is required if recent imaging is not performed at our JDMI Breast Imaging sites [MSH/ PMH/ WCH].

In order for our Department to efficiently process this request, the following information must be submitted to Breast Imaging during business hours.  A signed requisition requesting for mammographic consultation with clinical indication including all recent images/reports within 6 months, and at least 1 relevant previous study for comparison if patient has prior mammogram.


Breast Biopsy

A biopsy is usually necessary to determine a diagnosis of an area identified by our radiologist.   These procedures are scheduled as per our radiologist recommendation after mammogram, breast ultrasound, Breast MRI, or mammographic consultation.

If you are taking anti-coagulants (blood thinners), please talk to your doctor about this before your appointment.  A recent INR should be provided by the referring physician to your scheduled appointment. Your doctor should contact us if there is any concerns or known allergies to local anesthetic before your biopsy.

There are different ways a breast biopsy can be done.

  • Fine-needle aspiration biopsy
    For a fine-needle biopsy, the doctor uses a thin needle to remove fluid or cells from the tissue in the breast or lymph nodes under ultrasound guidance. You may feel some discomfort when the needle enters your breast. Local anesthetic will be used under the discretion of the radiologist and patient.
  • Core biopsy
    For a core biopsy, the doctor inserts a needle in an area in the breast through a small cut in the skin to obtain tissue samples.  Local anesthetic (freezing) will be given to numb the area. The doctor may take several samples.  Core biopsy is performed either under mammogram or ultrasound guidance that best demonstrate the area of interest in the breast.  You may feel some discomfort or pressure during the biopsy.  Please advise radiologist if there is pain during the procedure so radiologist could offer more freezing.
  • Vacuum-assisted biopsy
    A special vacuum-assisted technique is sometimes used to take a biopsy.  The procedure is the similar to the core biopsy with additional of vacuum and a larger needle sized use to sample the breast tissue.  Vacuum-assisted Core biopsy is performed either under mammogram, ultrasound, or MRI guidance that best demonstrate the area of interest in the breast.  You may feel some discomfort or pressure during the biopsy.  Please advise radiologist if there is pain during the procedure so radiologist could offer more freezing.  Radiologist may place a clip in the biopsy site at the end of the procedure for future reference if deemed necessary.


We strongly suggest you have a friend or family member accompany you home after the biopsy and post procedure care sheet will be given to you to provide information on biopsy care. 



A galactogram is a picture of the inside of the breast’s milk ducts. It is taken using an x-ray machine and special dye.

Before the galactogram, we may apply a warm towel to your breast. The towel will stimulate the duct to discharge the fluid.  When the radiologist has identified the duct expressing the discharge, a thin, flexible tube (called a blunt-tipped cannula) is inserted into the discharging duct. Then, a small amount of contrast dye is injected into the duct through the cannula. Some people experience a sensation of fullness or pressure when the dye is injected. After the dye has been injected, the technologist will take some mammogram pictures of the ducts.

You can return to your normal activities as soon as the galactogram is over.