Lesion-type specific reconstruction and display of digital breast tomosynthesis volumes

摘要

A method, a control unit and a system for image reconstruction and visualization of a tomosynthesis volume. Different region of interests are detected in the volume and specific types of lesions are determined. Based on the type of lesion, different reconstruction parameters and different reconstruction algorithms are applied in order to reconstruct a sub-volume or a region in a projection. After displaying the digital breast tomosynthesis volume, a user selection signal is received, in order to identify a selection area. The selection area identifies a region in the volume which should be reconstructed differently from the remaining volume and typically with higher resolution, because it refers to a region of specific interest. After having received the user selection signal the selection area is defined and a pre-computed or online-computed reconstruction of the selection area is visualized. The reconstruction is executed according to the determined lesion type specific reconstruction parameters.

主权项

1. A computer-implemented method for reconstructing and visualizing a digital breast tomosynthesis volume, the method comprising the following steps:
in a pre-computation phase:
receiving at least one of the digital breast tomosynthesis volume or a set of projections;applying a computer aided detection algorithm to the digital breast tomosynthesis volume or the set of projections in order to detect at least one region of interest;determining a specific type of lesion is in the respectively detected region of interest;accessing a look up table to determine lesion type-specific reconstruction parameters; andreconstructing the at least one region of interest with lesion type-specific reconstruction parameters; in a visualization phase:
visualizing the digital breast tomosynthesis volume or the projections and receiving a user selection signal identifying a selection area in the visualized digital breast tomosynthesis volume or the projections; in response to the user selection signal:
visualizing a pre-computed or on-line computed reconstruction of the selection area according to determined lesion type-specific reconstruction parameters in case the selection area lies within the region of interest; andvisualizing a magnified, inverted or other available visualization of the selection area in case no pre-computed reconstruction for the selection area is available.