Home WHEN IS BREAST ULTRASOUND ORDERED?
Mammography is the gold standard for breast cancer screening. Unlike mammography, breast ultrasound in isolation is NOT authorized by the College of Physicians and Surgeons of Alberta as a screening tool for early detection of breast cancer. This applies to both handheld and automated breast ultrasound.
Breast ultrasound is considered a diagnostic tool. This means that it’s ordered to investigate a specific concern, either to identify a cause for symptoms, such as lumps, pain, or redness, or if a doctor has discovered an abnormality.
Screening describes routine imaging that is ordered without specific symptoms or concerns, such as annual mammograms. It can be used to help detect diseases before they cause symptoms and while they can still be successfully treated.
Your breasts are made up of different types of tissue: fibroglandular and connective tissue, and fat. At Mayfair Diagnostics mammography clinics our equipment has software that helps determine your breast density – a measure of the proportion of fatty (not dense) versus connective and fibroglandular (dense) tissue that make up your breast. Breast density does NOT have to do with the size, look, or feel of your breast.
For women, breast density is the most prevalent risk factor for breast cancer. Sometimes a breast ultrasound may be performed along with your screening mammogram, if you meet the criteria below:
If a breast ultrasound is ordered because you meet the above criteria, your breast ultrasound would still be considered diagnostic, even if it’s ordered annually along with your screening mammogram.
If you do not meet the criteria above, then Mayfair Diagnostics is not authorized to perform a breast ultrasound along with your mammogram, even if your doctor has requested it or checked off Complete Breast Assessment on the Mayfair general requisition.
Please note that your breast density can change, so you may have a breast ultrasound with your mammogram one year but not the next.
Having regular screening mammograms makes it easier to compare images and see changes that are too small for you or your doctor to feel. These exams can be requested for women 40 and over when there are no symptoms, as part of a breast screening program. The Alberta Health Insurance Plan covers one screening mammogram per year for women, starting at age 40.
Breast cancer will affect one in eight women in Canada, but if you find it early, there is less chance of recurrence and an increased chance that it has not spread to the lymph nodes, so the odds are better you will survive it. Thanks to preventative screening more women are surviving a breast cancer diagnosis. In 2017, 89% of women diagnosed with breast cancer were still alive after five years.
During a screening mammogram, four images are taken. Occasionally you may be asked to return for additional breast imaging, such as a diagnostic mammogram and/or diagnostic breast ultrasound. This is done to get a more detailed look at any areas of concern and ensure you have received a complete breast exam.
Women with the following risk factors are considered high risk and may need to start having regular mammograms earlier and more frequently, and supplemental diagnostic breast ultrasound may also be ordered regularly.
Please note that having a family history of breast cancer does not mean that you WILL develop breast cancer; it simply increases your risk. Many women who develop breast cancer do not have a family history of the disease, which is why screening is important for all women, regardless of family history.
A breast ultrasound can help determine the composition of a lump, distinguishing between a cyst, fibroglandular tissue, and a solid mass. It uses high-frequency sound waves that travel into the breast until they hit a boundary between tissues, such as fluid and soft tissue, or soft tissue and bone. At these boundaries some of the sound waves are reflected back to the probe, while others travel farther until they reach another boundary and are reflected back. Since the pitch, direction, and distance sound waves travel differ depending on the boundary they run into, a computer can interpret this information as a two-dimensional image on a screen.
Mammography is a type of X-ray exam that takes an image of the inside of the breasts – called a mammogram. It’s the best way to detect breast cancer in its early, most treatable stage, because it provides a detailed look at the internal structure of breast tissue in both men and women and can reveal changes that are too small to feel.
When used together a mammogram and breast ultrasound can help provide a comprehensive look at breast tissue.
A biopsy can be performed in cases where ultrasound or mammography cannot differentiate benign from malignant lesions. This involves the insertion of a needle into the lesion to take a small tissue sample, which is then sent to a laboratory for analysis.
Mayfair Diagnostics has 14 locations which offer mammography exams, and except for our Coventry Hills clinic, all of them use the Senographe Pristina mammography system – which helps provide a more comfortable mammogram. Visit our breast imaging page for more information.
REFERENCES
American Cancer Society (2023) “Key Statistics for Breast Cancer.” www.cancer.org. Accessed October 4, 2023.
Canadian Cancer Society (2023) “Risks for breast cancer.” www.cancer.ca. Accessed October 4, 2023.
Canadian Cancer Society (2022) “Breast cancer statistics.” www.cancer.ca. Accessed October 4, 2023.
Engmann, N.J., et al. (2017) “Population-Attributable Risk Proportion of Clinical Risk Factors for Breast Cancer.” JAMA Oncology. 2017; 3(9) 1228-36.
Alberta Health Services (2021) “Breast Screening.” www.screeningforlife.ca. Accessed October 4, 2023.
Radiologists are specialized physicians who interpret diagnostic imaging to diagnose and monitor a wide range of medical conditions. At Mayfair Diagnostics, they review X-ray, ultrasound, CT, and MRI studies, among others, analyzinsg images in detail and providing comprehensive reports and clinical recommendations to referring physicians. They collaborate closely with technologists and clinic teams to guide imaging protocols, ensure quality and radiation safety standards, and may perform image-guided procedures such as biopsies or injections. Through their expertise and teamwork, radiologists play a key role in accurate diagnosis, effective treatment planning, and improved patient outcomes.
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Diagnostic Imaging Assistant (DIA) support clinic operations and help ensure a positive patient experience. They assist staff by greeting and preparing patients, confirming information, coordinating appointments, and guiding patients through their visit. DIAs also maintain exam rooms, manage documentation, and ensure supplies and equipment are ready. Through strong customer service, attention to detail, and teamwork, they help create a safe and organized environment.
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Nuclear Medical Technologists perform diagnostic nuclear medicine procedures involving sensitive and highly personal patient circumstances. They are responsible for delivering the highest standard of care in a professional, compassionate, and patient-centered manner, in accordance with provincial regulatory requirements, CAMRT standards, and Mayfair policies and guidelines.
Computed Tomography (CT) Technologists operate CT imaging equipment to produce detailed cross-sectional images of the body that assist in diagnosing a wide range of medical conditions. They prepare and position patients for scans, ensure safety protocols are followed, and administer contrast agents when required. CT technologists work closely with radiologists to ensure high-quality diagnostic images are obtained, while providing clear communication and compassionate care to support patient comfort throughout the procedure.
Magnetic Resonance Imaging (MRI) Technologists operates MRI scanners to produce detailed images of internal body structures used to assist in medical diagnosis and treatment planning. They are responsible for preparing and positioning patients, ensuring all safety protocols are strictly followed due to the strong magnetic field, and obtaining high-quality images as directed by radiologists. MRI technologists combine technical expertise with patient care, providing clear communication and support to ensure a safe, comfortable, and efficient imaging experience.
Diagnostic Medical Sonographers perform ultrasound exams to help diagnose and monitor medical conditions. Following Sonography Canada standards and Mayfair Diagnostics protocols, they capture accurate images while ensuring patient safety, comfort, and confidentiality. They work with radiologists and clinical teams to review requisitions, prepare patients, perform scans, and document findings, contributing to accurate diagnoses and a positive patient experience.
Medical Radiation Technologists (MRTs) perform x-ray, mammography, and BMD exams while ensuring patient safety, accuracy, and compassionate care. They also may assist in pain therapy procedures. MRTs verify patient information, explain procedures, position patients, and produce high-quality images. MRTs follow professional standards and protocols, maintaining strict radiation safety, quality assurance, and patient privacy while supporting a positive patient experience.
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