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In breast tomosynthesis, the X-ray tube moves through an arc while acquiring a series of low-dose X-ray images. The images taken from different angles are reconstructed into a range of Tomosynthesis slices where the structure of interest is always in focus.
The reconstructed tomographic images make it easier to identify lesions which might be difficult to visualize in routine mammography because of the presence of overlapping breast structures.
The Tomosynthesis function on AMULET Innovality is suitable for a wide range of uses, offering two modes to cater for various clinical scenarios. Standard (ST) mode combines rapid exposure timing and efficient workflow with a low X-ray dose while High Resolution (HR) mode makes it possible to produce images with a high level of detail, allowing the region of interest to be brought into clearer focus.
Routine mammography and breast screening: ST MODE
Acquisition angle: ±7.5°
Pixel size: 100/150 μm
The smaller angular range and fast image acquisition allow Tomosynthesis scans to be quickly performed with a relatively low x-ray dose.
The high acquisition efficiency provided by ST mode has been designed to allow routine Tomosynthesis application, supporting diagnostic mammography on asymptomatic patients and its implementation in breast screening.
Diagnostic mammography: HR MODE
- Acquisition angle: ±20°
- Pixel size: 100/50 μm
With a larger acquisition angle the depth resolution is improved. This allows the region of interest to be defined more clearly and brought into clearer focus.
HR mode allows tomosynthesis acquisition to reach higher detection accuracy: details depiction and structure conspicuity are supported by a higher spatial resolution and a more efficient overlaps removal. The ideal tool to investigate suspicious findings or to evaluate symptomatic women.