Photo Diagnostic Systems, Inc.

Photodetection Systems, Inc.

Olof Johnson

Bernard M Gordon

William Alan Worstell

Matthew Len Keeler

James Michael Connelly

Paul Domigan

Benjamin Galen Connelly

Leonid Romanov

A scanning system includes an improved arrangement of shielding curtains to limit radiation leakage while achieving high throughput and limiting system length. The scanning system includes a segmented conveyor, including a faster conveyor through a shielding region to improve increase throughput of scanned articles, and a slower conveyor through a scanning region to ensure acceptable scanning performance. The curtains are arranged based on the changing gap distance between the articles that results from the changing conveyor speeds.

Method and apparatus to reduce radiation emissions on a parcel scanning system

A method for scanning an object in an X-ray security inspection system, wherein the X-ray security inspection system comprises an ingoing tunnel equipped with radiation-shielding curtains, an X-ray section and an outgoing tunnel equipped with radiation-shielding curtains, the method comprising: passing the object through the ingoing tunnel at a first rate of speed and with a first extent of separation between successive objects; passing the object through the X-ray section at a second rate of speed and with a second extent of separation between successive objects; and passing the object through the outgoing tunnel at a third rate of speed and with a third extent of separation between successive objects; wherein the second rate of speed is less than the first rate of speed and the third rate of speed, and wherein the second extent of separation between successive objects is less than the first extent of separation between successive objects and the third extent of separation between successive objects.

Computed tomography (CT) security inspection system with enhanced X-ray shielding

An improved dual energy CT imaging system for providing improved imaging and improved material identification.

Method and apparatus for performing multi-energy (including dual energy) computed tomography (CT) imaging

A PET scanner includes a scintillator block and a plurality of photodetectors, each of which has a field of view that includes a portion of the scintillator block. An optical element is disposed between the scintillator block and the plurality of photodetectors. The optical element has a first layer and a second layer. The first layer has a central region and a peripheral region separated by a first gap. The second layer has at least a first region and a second region separated by a second gap.

Growing community of inventors

Ashburnham, MA, United States of America

Olof Johnson