Wei Gang Zhao

US Patent:

7323692, Jan 29, 2008

Filed:

Aug 10, 2005

Appl. No.:

11/201658

Inventors:

John A. Rowlands - Toronto, CA
Wei Zhao - East Setauket NY, US

Assignee:

Research Foundation of State University of New York - Albany NY
Sunnybrook and Woman's College Health Sciences Center

International Classification:

G01T 1/20

US Classification:

25037009, 25037011, 250371

Abstract:

The present invention is an indirect AMFPI wherein a phosphor such as a structured cesium iodide (CsI) is used to convert x-ray energy to optical photons or a charge, which is then detected by a two-dimensional array of either thin-film transistors (TFTs) such as an amorphous a-Se TFTs or a photodiode array. A scanning control circuit generates pulses to turn on the TFTs one row at a time, and thus the charge in the individual arrays is transferred from the TFT to one or more external charge-sensitive amplifiers. The charge-sensitive amplifiers are shared by all the pixels in the same column. The two-dimensional array can be read in real time.

US Patent:

7742558, Jun 22, 2010

Filed:

May 8, 2009

Appl. No.:

12/437957

Inventors:

Thomas Mertelmeier - Erlangen, DE
Wei Zhao - East Setauket NY, US

Assignee:

Siemens Aktiengesellschaft - Munich
Research Foundation of State University of New York - Albany NY

International Classification:

A61B 6/00

US Classification:

378 21, 378 37

Abstract:

A tomosynthesis apparatus for mammography has an x-ray source for emission of x-ray beams from different directions directed toward a detector, and a compression plate and a support plate arranged in the beam path between the x-ray source and the detector. A breast to be examined is positioned and compressed between the compression plate and the support plate. The compression plate exhibits a concave recess open in the direction of the support plate on the side of the compression plate facing toward the support plate.

US Patent:

8253212, Aug 28, 2012

Filed:

Jun 23, 2009

Appl. No.:

12/457855

Inventors:

Matthew M. Wronski - Toronto, CA
Giovanni DeCrescenzo - Toronto, CA
Alla Reznik - Toronto, CA
Wei Zhao - Stony Brook NY, US
Jennifer Ann Segui - Stony Brook NY, US
John A. Rowlands - Toronto, CA

Assignee:

Sunnybrook Health Sciences Centre - Toronto, Ontario
Research Foundation of State University of New York - Stony Brook NY

International Classification:

H01L 31/107

US Classification:

257438, 250214 A, 2502141, 257E31063

Abstract:

A photodetector/imaging device comprises a layer of photoconductive material converting incident electromagnetic radiation into electrical charges, the layer of photoconductive material being capable of avalanche multiplication when an electric field of sufficient magnitude is applied thereacross; a readout layer detecting the electrical charge; and at least one interface layer between the layer of photoconductive material and the readout layer, the interface layer coupling electrical charge to or from the layer of photoconductive material and being configured to inhibit uncontrolled rises in current in the photoconductive material during avalanche multiplication.

US Patent:

20220404513, Dec 22, 2022

Filed:

Aug 23, 2022

Appl. No.:

17/893609

Inventors:

- Albany NY, US
Wei Zhao - East Setauket NY, US
John A. Rowlands - Thunder Bay, CA
Adrian Howansky - Centereach NY, US

Assignee:

The Research Foundation for The State University of New York - Albany NY

International Classification:

G01T 1/20
H01L 27/146

Abstract:

Structures operable to detect radiation are described. The structure may two screens with a phosphor layer, respective. The structure may further include a photosensor array disposed between the first screen and the second screen such that the photosensor array directly contacts the first screen or is directly attached to the first screen using an optical adhesive and directly contacts the second screen or is directly attached to the second screen using an optical adhesive.

US Patent:

20220244411, Aug 4, 2022

Filed:

Apr 25, 2022

Appl. No.:

17/727995

Inventors:

- Albany NY, US
Andrew Labella - New Rochelle NY, US
Wei Zhao - East Setauket NY, US

International Classification:

G01T 1/202
G01T 1/164
G01T 1/20
G01T 1/29

Abstract:

Provided is a particle detection device and method of fabrication thereof. The particle detection device includes a scintillator array that includes a plurality of scintillator crystals; a plurality of detectors provided on a bottom end of the scintillator array; and a plurality of prismatoids provided on a top end of the scintillator array. Prismatoids of the plurality of prismatoids are configured to redirect particles between top ends of crystals of the scintillator array. Bottom ends of a first group of crystals of the scintillator array are configured to direct particles to a first detector of the plurality of detectors and bottom ends of a second group of crystals of the scintillator array are configured to direct particles to a second detector substantially adjacent to the first detector.

US Patent:

20230129006, Apr 27, 2023

Filed:

Feb 24, 2021

Appl. No.:

17/801958

Inventors:

- Albany NY, US
Amir H. GOLDAN - East Setauket NY, US
Andrew LABELLA - New Rochelle NY, US
Wei ZHAO - East Setauket NY, US
Adrian HOWANSKY - Centereach NY, US

Assignee:

THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORK - Albany NY

International Classification:

G01T 1/29
A61B 6/03

Abstract:

The disclosure relates to a device and positron emission tomography (PET) scanner for acquiring a PET image and a system for generating the PET image. The disclosure describes a device that may have one or more moveable portions. The device may comprise an upper portion and a lower portion. The upper portion and lower portion define a cavity for a patient. At least one of the upper portion or the lower potion may be movable. The upper and lower portions may comprise a cap and wings, respectively, At least one of the caps and/or wings may comprise one or more detection modules. The wings may also move with respect to a corresponding cap.

US Patent:

20230052635, Feb 16, 2023

Filed:

Jan 15, 2021

Appl. No.:

17/790088

Inventors:

- Albany NY, US
Amirhossein GOLDAN - Stony Brook NY, US
Wei ZHAO - East Setauket NY, US
Eric PETERSEN - Stony Brook NY, US

Assignee:

THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORK - Albany NY

International Classification:

A61B 6/00
A61B 6/03
G01T 1/202

Abstract:

The disclosure is directed to a device that includes a cavity formed by a plurality of rails, the plurality of rails connected to both a first support and a second support, each at predetermined intervals about a circumference of the first support and the second support; and at least one particle detection device operably connected to each rail of the plurality of rails. The disclosure is also directed to a scanner that includes the device, and a processor.

US Patent:

20210242415, Aug 5, 2021

Filed:

Jan 22, 2021

Appl. No.:

17/155446

Inventors:

- Albany NY, US
Wei Zhao - East Setauket NY, US

Assignee:

The Research Foundation for The State University of New York - Albany NY

International Classification:

H01L 51/42
G01T 1/20
G01T 1/24
H01L 27/30

Abstract:

A sensor including a layer of amorphous selenium (a-Se) and at least one charge blocking layer is formed by depositing the charge blocking layer over a substrate prior to depositing the amorphous selenium, enabling the charge blocking layer to be formed at elevated temperatures. Such process is not limited by the crystallization temperature of a-Se, resulting in the formation of an efficient charge blocking layer, which enables improved signal amplification of the resulting device. The sensor can be fabricated by forming first and second amorphous selenium layers over separate substrates, and then fusing the a-Se layers at a relatively low temperature.