What is the difference between mammogram and ultrasound of the breast

Ultrasound uses sound waves to image the breast. Ultrasound can be especially useful among individuals who have dense breasts, but it should not be used as a substitute for a mammogram. MRI technology relies on the magnetic field and radiofrequency waves to produce images. With breast cancer screening, doctors retrieve images of the breasts before and after you receive an intravenous contrast solution that helps enhance the appearance of abnormal tissue.

Doctors may also order a breast MRI to clarify uncertain findings from a mammogram or ultrasound. Unfortunately, as a stand-alone screening tool, MRI increases the odds of radiologists detecting suspicious tissue that isn't cancerous, which may require additional testing.

Whether your screening includes mammography, ultrasound or MRI—or some combination of all three—false positive findings can occur. A false positive screening exam happens when the patient is called back for further workup of a finding that ultimately does not turn out to be cancer.

Studies show that women who have prior mammograms for comparison have fewer false positives," Dr. These false findings are also more common among patients who:. If it is cancer, the additional workup will have helped diagnose it early and that's a good thing! Skip to content. Litwer, MD.

Many technologies, one goal: better screening. Read: Mammograms Demystified. But even within mammography, you have options: 2D mammography : 2D digital mammography captures two X-ray images of the breast, one from the top and one from the side. These are flat, 2-dimensional images, which means overlapping tissue can hide abnormalities that could be signs of cancer. With the help of artificial intelligence, radiologists review to images with 3D mammography compared to only four with 2D technology.

Women who are at a higher risk for breast cancer might need more frequent mammograms than women who are an average or low risk. During a mammogram , the breast rests on a plate positioned at chest level. A second plate lowers on top of the breast, pushing it flat and holding it still while the x-ray machine captures an image. The technologist performing the x-ray will capture images from the front and the side, taking four pictures in all, two of each breast.

The results of a screening mammogram can be either normal, meaning there are no lumps or signs of a tumor, or abnormal, meaning the radiologist noticed something that seems amiss. After an abnormal result, the next step is often to follow up with a diagnostic mammogram, so the technologist can capture more images.

Is a breast ultrasound better than a mammogram? Though a doctor might order both as a follow-up after an abnormal screening mammogram, there are several notable differences in the procedures. Some distinctions between the two are as follows. Breast ultrasound is not currently a recommended screening tool for breast cancer, because it can miss many early signs of a tumor.

Some patients might be better candidates for an ultrasound compared to a mammogram. Pregnant women should usually avoid having x-rays performed unless the imaging is essential. A breast ultrasound might be a suitable alternative to a mammogram during pregnancy.

It works by compressing the breasts between two plates and often, pressure is felt during this process. Some women may even experience discomfort due to this compression, but this technique is necessary to obtain clear images in order to detect small abnormalities or microcalcifications, which are tiny calcium deposits present in early breast cancer.

The images are then analysed by radiologists. If the findings indicate the presence of a lump or appear uncertain, the woman may be asked to return for further tests such as an ultrasound. An ultrasound uses high-frequency sound waves to assess tissues inside the body and converts them to an image.

Unlike a mammogram, there is no radiation involved in an ultrasound, making it safe for pregnant women. A small probe moves across the breast to determine if lumps are solid such as a fibroadenoma or cancer or fluid-filled such as a cyst , ultrasounds therefore provide supplementary information that a mammogram cannot obtain. While it appears that an ultrasound is more efficient and cost effective, a mammogram should always be the first tool of choice to screen for breast cancer, as an ultrasound comes with its own limitations that make it inappropriate as a screening test.

Inability to take an image of the whole breast at once An ultrasound uses a hand-held probe to focus on abnormal areas around the breast, it is subjected to errors and operator dependent.