Tomosynthesis with shifting focal spot and oscillating collimator blades
US-9226721-B2 · Jan 5, 2016 · US
Tomosynthesis with shifting focal spot and oscillating collimator blades
US9502148B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9502148-B2 |
| Application number | US-201514966011-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 11, 2015 |
| Priority date | Nov 24, 2008 |
| Publication date | Nov 22, 2016 |
| Grant date | Nov 22, 2016 |
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Abstract
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In a tomosynthesis system a static focal spot is moved in a direction opposite to and generally synchronized with the directional movement of an x-ray source and X-ray collimator blades are moved during each exposure in synchronization with the shifting of the static focal spot. The synchronized movement of the static focal spot, x-ray tube and collimator blades helps keep the effective focal spot fixed in space relative to the breast, detector or both during the entire duration of the exposure and keeps the x-ray field on the detector and breast static. The shifting collimator blades follow an oscillating pattern over the multiple x-ray exposures of a tomosynthesis scan.
First claim
Opening claim text (preview).
What is claimed is: 1. A method comprising: emitting x-ray radiation from an x-ray source during a tomosynthesis scan towards at least one collimator blade so as to collimate the x-ray radiation, wherein the at least one collimator blade at least partially defines a static focal spot having a predetermined size; synchronously moving generally, during the emission of x-ray radiation, the x-ray source in a first direction and the at least one collimator blade in a second direction…
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- What does patent US9502148B2 cover?
- In a tomosynthesis system a static focal spot is moved in a direction opposite to and generally synchronized with the directional movement of an x-ray source and X-ray collimator blades are moved during each exposure in synchronization with the shifting of the static focal spot. The synchronized movement of the static focal spot, x-ray tube and collimator blades helps keep the effective focal s…
- Who is the assignee on this patent?
- Hologic Inc
- What technology area does this patent fall under?
- Primary CPC classification G21K1/04. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 22 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).