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Next, I would like to talk about,

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Indications for Screening Ultrasound.

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And these are the indications according to the Society of Breast Imaging.

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Indications include average-risk women

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with dense breasts as an adjunct to mammography.

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Screening ultrasound should never be performed in isolation,

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or high-risk women for who qualify for MRI screening but cannot have an MRI.

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So somebody with a pacemaker, for example,

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somebody with an allergy to gadolinium, or other reasons,

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some kind of metal foreign body inside of their body

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that they cannot have MRI.

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Screening Breast Ultrasound.

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The sensitivity of mammography and dense breasts ranges from about 47.8% to 64.4%

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In non dense breasts, the sensitivity is upwards of 85%

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Patients with dense breasts have

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an increased risk of developing breast cancer.

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Thus, we need a better way to screen them.

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Screening Breast Ultrasound has been shown

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to detect an additional three to four cancers per thousand women screened.

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So there are two ways to perform Screening Breast Ultrasound.

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It can be performed with Handheld

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Screening Breast Ultrasound versus ABUS, Automated Breast Ultrasound.

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Handheld Ultrasound is operator dependent

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and time-consuming, and it also requires extensive training.

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This is an image from a Handheld Screening Breast Ultrasound that found a cancer.

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Automated Breast Ultrasound is standardized, reproducible

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and operator independent.

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It's quick, however, the downside is it's prone to artifacts.

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But on a plus side,

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you get to see the breast in multiple planes and it requires less training.

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Both have equivalent rates of breast cancer detection.

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Over here is an example of what an ABUS looks like,

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and we can see this black defect in the tissue here.

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And when you go to the orthogonal view on ultrasound,

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you can see there's a regular mask that looks very similar to a handheld version.

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And that is all for indications for screening breast ultrasound.