Eastman-kodak Company

Carestream Health, Inc.

Other

University-industry Cooperation Group of Kyung Hee University

Timothy John Tredwell

Roger Stanley Kerr

Robert W Spurr

Kurt Michael Sanger

Babak B Tehranchi

Jeff Hsin Chang

Gregory N Heiler

Ravi K Mruthyunjaya

Badhri Narayan

Seung-Ho Baek

Robert W Kulpinski

Kenneth Alan Parulski

Lee William Tutt

Eric Julius Donaldson

Yongtaek Hong

Andrea S Rivers

Mark A Harland

Sarat K Mohapatra

Diane M Carroll-Yacoby

Jackson Lai

Ronald S Cok

Seshadri Jagannathan

Michael L Boroson

Jin Hee Jang

Dustin Lee Winters

Paul W Jones

Timothy John Wojcik

David L Losee

Charles M Rankin

Mark E Shafer

Glenn T Pearce

David W Gruszczynski

Daniel D Haas

Christopher L DuMont

Daniel M Leusch

Jae Gwang Um

Scott E Phillips

Mohammad Masum Billah

Peter M Stwertka

Mallory Mativenga

Robert P Bourdelais

Arokia Nathan

David D Kessler

Joshua Monroe Cobb

Victor C Wong

Constantine N Anagnostopoulos

Eric Gordon Stevens

Nelson Adrian Blish

Cheryl J Kaminsky

Ronald Myron Wexler

John C Boutet

John Yorkston

Jeffery Richard Hawver

David B Kay

Kelvin Nguyen

David Michael Boisvert

Mark D Bedzyk

Sujatha Ramanujan

Bradley Stephen Jadrich

William E Moore

John M Caywood

Cynthia S Bell

Roger A Morton

Kwok-Leung Yip

Edward T Nelson

James P Lavine

Brian Patrick Aylward

Scott C Robinson

Arthur A Whitfield

Jagdish Pathak

Kevin L Bishop

Gary L Robison

Michael J Siwinski

Denis Striakhilev

James T Stoops

Yuriy Vygranenko

Eric L Dillenbeck

David A Smith

Robert H Cuffney

Lynn D Dann

Jin Haeng Jang

Raymond J Bouvy

Paul M Williams

Kwok-leung Yip

Teh H Lee

Jackson C S Lai

Mohammed Masum Billah

Yuriy Carestream Health Inc Vygranenko

Arokia Carestream Health Inc Nathan

Jackson C Lai

A digital radiographic detector uses an IGZO active layer in the switching element for each imaging pixel in a two-dimensional array of imaging pixels. Each imaging pixel has a photo-sensitive element and the switching element. Read-out circuits electrically connected to the two-dimensional array generate a radiographic image by reading out image data by switching on and off the switching elements. The IGZO active layer may be formed having a thickness less than about 7 nm.

Reduction of TFT instability in digital X-ray detectors

A radiographic energy detecting pixel generates charges in a photosensor in response to photon impacts. A switch electrically connected to the photosensor selectively transmits collected charges to a data line. A sensing circuit electrically connected to the photosensor detects a rate of accumulation of the charges in the photosensor.

Detection of X-ray beam start and stop

Reduction of TFT instability in digital x-ray detectors

Embodiments of radiographic imaging systems; radiography detectors and methods for using the same; and/or fabrication methods therefore can include radiographic imaging array that can include a plurality of pixels that each include a photoelectric conversion element coupled to a thin-film switching element. In certain exemplary embodiments, thin-film switching element is a metal oxide (e.g., a-IGZO) TFT manufactured using a reduce photolithography mask counts. In certain exemplary embodiments, the thin-film switching element is a metal oxide (e.g., a-IGZO) TFT that includes reduced lower alignment tolerances between TFT electrodes. In certain exemplary embodiments, the thin-film switching element is a metal oxide (e.g., a-IGZO) TFT including a reduced thickness active layer.

Radiographic imaging array fabrication process for metal oxide thin-film transistors with reduced mask count

A digital radiographic detector uses predetermined calibration information corresponding to a first operating temperature of the detector. The calibration data is accessible by the detector to compensate a radiographic image captured by the detector at a second operating temperature different than the first operating temperature. The operating temperature of the detector is monitored at approximately the time at which the radiographic image is captured at the second temperature.

Temperature compensation for thin film transistors in digital X-ray detectors

A two dimensional array of digital imaging pixels each include a photo-sensing element and a readout element. A test element within the two-dimensional array, a column of test elements peripheral to the array, or test monitoring circuits peripheral to the array are constructed using the same process as the readout elements. The test element within the array and the column of test elements are connected to a first and second external voltage sources. The test element within the two-dimensional array and the column of test elements may be connected to a test data line or to a data line used by the imaging pixels.

Threshold voltage calibration and compensation circuit for a digital radiographic detector

Described is a scintillator screen that includes a supporting layer having a phosphor dispersed in a polymeric binder disposed on the supporting layer and a barrier layer disposed on the polymeric binder. The barrier layer includes a non-moisture absorbing polymer selected from the group consisting of polyethylene terephthalate, cellulose diacetate, ethylene vinyl acetate and polyvinyl butyraldehyde. The barrier layer has a thickness of less than 1 micron. An antistatic layer is disposed on the barrier layer. The antistatic layer includes poly(3,4-ethylenedixythiophene)-poly(styrene sulfonate) (PEDOT/PSS) dispersed in a polymer selected from the group consisting of a polyester and a polyurethane. The antistatic layer has a transparency of greater than 95 percent at a wavelength of from about 400 nm to 600 nm.

Coatings for digital detectors

Temperature compensation for thin film transistors in digital x-ray detectors

A method for forming an electronic device provides a carrier formed from a composite material comprising a plastic binder and an embedded material. A substrate material is attached to the carrier. The substrate is processed to form the electronic device thereon. The substrate is then detached from the carrier to yield the resultant electronic device.

Method for forming an electronic device on a flexible substrate supported by a detachable carrier

A projection radiographic imaging apparatus includes a scintillator and an imaging array. The imaging array includes a plurality of pixels formed directly on a side of the scintillator. Each of the pixels includes at least one photosensor and at least one readout element.

Radiographic detector formed on scintillator

Embodiments relate to detector imaging arrays with scintillators (e.g., scintillating phosphor screens) mounted to imaging arrays or radiographic detectors using the same. For example, the detector imaging arrays can include a scintillator, an imaging array comprising imaging pixels, where each imaging pixel comprises at least one readout element and one photosensor; and a first dielectric layer formed between the scintillator and the imaging layer, wherein the dielectric constant of the insulating layer is very low. Embodiments according to the application can include a second dielectric layer formed over at least a portion of the non-photosensitive regions of the array and/or a first dielectric layer, each with a dielectric constant.

Digital radiographic imaging arrays including patterned anti-static protective coating with systems and methods for using the same

A wireless X-ray detector for a digital radiography system with remote detection of impinging radiation from the system X-ray source onto a sensor panel having amorphous or crystalline silicon photodiodes or metal insulated semiconductor (MIS) sensors. Certain exemplary embodiments described herein can provide a digital radiography detector including a housing having first and second spaced members and side walls defining a cavity; a radiographic image detector assembly mounted within the cavity for converting a radiographic image to an electronic radiographic image, wherein the detector assembly includes a scintillator screen and a detector imaging array; and a light guiding element positioned proximate the radiographic image detector assembly to detect a start of exposure, a termination of the exposure, dose for the exposure or rate of dose for the exposure using light generated by the scintillator screen.

Indirect radiographic imaging systems including integrated beam detect

Embodiments of methods/apparatus can transition a DR detector imaging array to low power photosensor mode where a first voltage is applied across the photosensors. Embodiments of methods/apparatus can provide an area radiographic imaging array including a plurality of pixels arranged in a matrix at the imaging array where each pixel can include at least one electrically chargeable photosensor and at least one transistor, row address circuits, signal sensing circuits, and photosensor power control circuitry to maintain a first voltage across photosensors of the portion of the imaging array when the detector is between imaging operations. In one embodiment, photosensor power control circuitry can maintain the first voltage across the photosensors when a power consumption of the signal sensing circuits is less than 1% of the power consumption of the signal sensing circuits during readout of a signal from the portion of the imaging array.

Radiographic detector with rapid power-up, imaging apparatus and methods using the same

Embodiments of radiographic imaging systems; digital radiography detectors and methods for using the same can monitor and/or control trap occupancy levels in photosensors of radiographic sensors (e.g., DR FPDs). In exemplary radiographic imaging apparatus embodiments, monitoring of trap occupancy or change in trap occupancy of the photosensor can determine whether an imaging array or detector panel has reached a stable operating point. In another embodiment, trap occupancy information can be used (a) to enable a generator (e.g., x-ray source) for a radiographic exposure and/or (b) to adjust to or to maintain a change in trap occupancy level at pre-determined set-point or to adjust to or maintain a change in trap occupancy level within a prescribed range (e.g., using clock signals and bias voltages applied to the photosensor).

Radiographic detector including trap occupancy change monitor and feedback, imaging apparatus and methods using the same

There is described a method of manufacturing a digital radiography panel. The method includes providing a scintillator screen and spray coating an acrylic adhesive composition on the scintillator screen. A flat panel detector and the scintillator screen with acrylic adhesive composition are compressed together at a force of about 5 psi to about 15 psi, at an atmospheric pressure of about 0.3 Torr to about 100.0 Torr for a time sufficient to affix the flat panel detector to the scintillator screen to form the digital radiography panel.

Method of manufacturing digital detectors

Growing community of inventors

Fairport, NY, United States of America

Timothy John Tredwell