IP Library Granted Patent US 9,620,256
Granted Patent B2
US 9,620,256 · App. 14/474,684 · Granted Apr 11, 2017

X-ray imaging device including anti-scatter grid

Inventors: Gary Virshup (Cupertino, CA); Heinrich Riem (Baden-Daettwil, CH)
Assignees: Varian Medical Systems, Inc.; Varian Medical Systems International AG
G21K1/025A61B6/4233A61B6/4283A61B6/4291G01T1/20
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Quick Facts
Patent No.
US 9,620,256
App. No.
14/474,684
Granted
Apr 11, 2017
Kind
B2
Abstract

An x-ray imaging device includes an anti-scatter grid placed inside the housing of the imaging device and adjacent to an x-ray detector.

Claims (13)

1. An x-ray imaging device, comprising:

a housing comprising a cover plate;

an x-ray detector placed inside the housing;

an anti-scatter grid placed inside the housing adjacent to the x-ray detector; and

a compressible foam between the cover plate and the x-ray detector,

wherein the compression foam comprises a first piece and a second piece, and the anti-scatter grid is sandwiched between the first and second pieces.

2. The x-ray imaging device of claim 1 wherein the first piece of the compression foam is in between the cover plate of the housing and the anti-scatter grid, and the second piece of the compression foam is in between the anti-scatter grid and the x-ray detector, and the second piece of the compression foam is thinner than the first piece of the foam.

3. The x-ray imaging device of claim 1 wherein the compression foam is provided with a slot forming the first and second pieces and the anti-scatter grid is received and held in the slot.

4. The x-ray imaging device of claim 1 wherein the anti-scatter grid is attached to the housing by an attachment member.

5. The x-ray imaging device of claim 1 wherein the x-ray detector comprises a digital flat panel detector comprising a scintillator layer configured to convert x-ray photons to visible light.

6. The x-ray imaging device of claim 1 wherein the x-ray detector comprises a digital flat panel detector comprising a photoconductor layer configured to convert x-ray photons to electron-hole charges.

7. The x-ray imaging device of claim 1 wherein the anti-scatter grid is distanced from the x-ray detector about 1-15 mm.

8. The x-ray imaging device of claim 7 wherein the anti-scatter grid is distanced from the x-ray detector about 3-5 mm.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 25, 2014
From: VIRSHUP, GARY
To: VARIAN MEDICAL SYSTEMS, INC.
Reel/Frame 034266/0490 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 25, 2014
From: RIEM, HEINRICH
To: VARIAN MEDICAL SYSTEMS INTERNATIONAL AG
Reel/Frame 034266/0493 →
Continuity (2)
Provisional Application 61882846 · Sep 26, 2013
Related Publication 20150085990A1 · Mar 26, 2015