Multiple focal spots for high resolution computed tomography
AssigneesThe Johns Hopkins University, The Trustees of the University of Pennsylvania
InventorsJoseph Webster STAYMAN, Jianan GANG, Peter B. NOEL
Life of this patent
Estimating the term…
Abstract
A method for producing high resolution computed tomography (CT) images is disclosed. The method includes combining multiple focal spots in a single data acquisition to provide high-resolution multi-resolution data that is able to resolve fine features and with fluence to reduce noise levels, wherein the multiple focal spots have different focal spot types; and processing the high-resolution multi-resolution data using a model-based iterative reconstruction (MBIR) method.
Claims17
A method for producing high resolution computed tomography (CT) images, the method comprising:
- combining multiple focal spots in a single data acquisition to provide high-resolution multi-resolution data that is able to resolve fine features and with fluence to reduce noise levels, wherein the multiple focal spots have different focal spot types;
- and
- processing the high-resolution multi-resolution data using a model-based iterative reconstruction (MBIR) method.
A method for producing high resolution computed tomography (CT) images, the method comprising:
- providing a first focal spot and a second focal spot to a target location on a patient, wherein the first focal spot is larger and produced with a first x-ray source at a higher power and the second focal spot that is smaller and produced with a second x-ray source at a lower power than the first focal spot;
- recording one or more images from the first focal spot and recording one or more images from the second focal spot;
- combining the one or more images from the first focal spot the one or more images from the second focal spot to provide high-resolution multi-resolution data that is able to resolve fine features and with fluence to reduce noise levels;
- and
- processing the high-resolution multi-resolution data using a model-based iterative reconstruction (MBIR) method.
A system for producing high resolution computed tomography (CT) images, the method comprising:
- a first x-ray source that provides a first focal spot and a second x-ray source that provides second focal spot to a target location on a patient, wherein the first focal spot is of a first type and produced with the first x-ray source at a first power and the second focal spot that is of a second type and produced with the second x-ray source at a second power;
- one or more detectors that detects and records one or more images from the first focal spot and recording one or more images from the second focal spot;
- and
- a computer system comprising a processor and computer-readable storable medium that stores instructions to combine the one or more images from the first focal spot the one or more images from the second focal spot to provide high-resolution multi-resolution data that is able to resolve fine features and with fluence to reduce noise levels and processes the high-resolution multi-resolution data using a model-based iterative reconstruction (MBIR) method.
Dependencies are inferred from the claim text.