Phantom and method for image quality assessment of a digital breast tomosynthesis system
AssigneeThe Phantom Laboratory, Incorporated
InventorsDavid J. GOODENOUGH, Joshua R. LEVY
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Abstract
A phantom for image quality assessment of digital breast tomosynthesis apparatus includes at least one set of beads arranged as a first ramp and as a second ramp in respective proximate parallel vertical planes in a reverse staircase pattern along a vertical direction with a final bead of the first ramp and an initial bead of the second ramp being located at substantially the same intermediate height within the phantom. The beads and additional test objects may be positioned in non-overlapping locations within the phantom to facilitate determination of multiple image quality parameters with a single scanning sequence of the phantom.
Claims21
Phantom for image quality assessment of a tomosynthesis imaging system, comprising:
- a first ramp of spaced apart beads disposed in a first vertical plane and extending from a lower end of the first ramp along a first inclination up to a final end of the first ramp at an intermediate height of the phantom;
- a second ramp of spaced apart beads disposed in a second vertical plane and extending from near the final end of the first ramp at the intermediate height up and back along a second inclination;
- and
- wherein the second vertical plane is located parallel and proximate to the first vertical plane.
A phantom for calibrating a tomosynthesis imaging system, comprising at least one set of beads arranged as a first ramp and as a second ramp in respective proximate parallel vertical planes in a reverse staircase pattern along a vertical direction with a final bead of the first ramp and an initial bead of the second ramp being located at substantially the same intermediate height within the phantom.
Dependencies are inferred from the claim text.