In DBT imaging, what images are acquired during the movement of the X-ray tube?

In digital breast tomosynthesis (DBT), the key aspect of the imaging process involves acquiring projection images while the X-ray tube moves in an arc over the breast. These projection images are essentially two-dimensional representations of the breast tissue at various angles, which are then used to create a three-dimensional reconstruction of the breast.

The multiple angles from which these projection images are captured allow for improved visualization of breast structures, reducing the overlap of tissues that often complicates traditional two-dimensional mammography. This technique enhances the ability to detect and characterize lesions more clearly within the breast tissue.

The other terms mentioned, while relevant to imaging and reconstruction in radiology, do not describe the specific images acquired during the movement of the X-ray tube in DBT. Anisotropic images refer to a type of imaging that can vary in different directions, and reconstruction images are related to the processed outputs from the dataset of projection images rather than the images acquired during tube movement. FBP, or filtered back projection, is a method used in image reconstruction but does not specifically identify the type of images taken during the projection phase in DBT.