Varian Medical Systems, Inc.

Varex Imaging Corporation

Robert Edward Drubka

Gongyin Chen

Timothy R Fox

David T Nisius

Kevin Matthew Holt

Michael Z Duncan

Martin Hu

John Stammetti

Zane J Wilson

These various embodiments serve to facilitate interlaced amplitude pulsing using a hard-tube type pulse generator having at least one energy-storage unit each comprising at least one energy-storing capacitor. Generally speaking, this comprises controlling an amount of energy withdrawn from the energy-storage unit and provided to an output load to form productive electric pulses by controlling at least one of: (1) energy replenishment; and (2) non-productive energy withdrawal of the energy-storage unit, to thereby achieve a series of productive interlaced amplitude electric pulses.

Method and apparatus for interlaced amplitude pulsing using a hard-tube type pulse generator

Radiation scanning systems providing multiple views of an object in different planes and a reconstruction algorithm for reconstructing quasi-three-dimensional images from a limited number of views. A system may include bend magnets to direct accelerated charged particles to multiple targets in different viewing locations. Another system collimates radiation generated by a plurality of radiation sources into multiple beams for scanning an object at multiple angles. The object may be a cargo container, for example. The reconstruction algorithm uses an optimization algorithm and imaging and feasibility models to reconstruct quasi-three-dimensional images from the limited number of views.

Systems and methods for multi-view imaging and tomography

Variable pulse frequency during an output session of a betatron device and adjustable energy from pulse to pulse are provided. A different bias magnetic field may be used for different cycles of an output session, thereby providing different pulse energies. In one example, the bias field can be switched from a positive value to zero, with energy stored in a storage device when the bias field is zero. The bias field can also be used to expand electrons from a stable orbit when the bias field is decreased. For variable pulse frequency, when a current in the swing coils decreases to zero, the swing coils can be disengaged from a storage device for an adjustable time before re-engaging for a next cycle, thereby adjusting the frequency. In addition, radiation dose output can be adjusted by varying a length of time for the injection of electrons into a betatron.

Interlaced multi-energy betatron with adjustable pulse repetition frequency

An x-ray-based radiation imaging apparatus () for use in imaging an object () can comprise a source of x-rays () having an output radiation intensity control input and a radiation intensity controller () operably coupled thereto. This radiation intensity controller can have a control output () that is operably coupled to the output radiation intensity control input and an object information input (). So configured, the radiation intensity controller can dynamically adjust radiation intensity as output by the source of x-rays as a function of information regarding the object itself.

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Scottsdale, AZ, United States of America

Robert Edward Drubka