Methods and systems for performing joint estimation techniques in image reconstruction

An image and imaging technology, applied in the field of imaging systems, can solve problems such as the adverse effect of attenuation map accuracy

Active Publication Date: 2016-10-05
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Breathing motion can adversely affect the accuracy of the generated attenuation maps

Method used

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  • Methods and systems for performing joint estimation techniques in image reconstruction
  • Methods and systems for performing joint estimation techniques in image reconstruction
  • Methods and systems for performing joint estimation techniques in image reconstruction

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[0060] The foregoing summary, as well as the following detailed description of various embodiments, are better understood when read in conjunction with the accompanying drawings. To the extent that diagrams show the functional blocks of various embodiments, the functional blocks are not necessarily indicative of the division between hardware circuitry. Thus, for example, one or more functional blocks (eg, a processor or memory) may be implemented in a single piece of hardware (eg, a general-purpose signal processor or random access memory block, hard disk or the like) or in multiple pieces of hardware. Similarly, a program may be a stand-alone program, may be included as a subroutine in an operating system, may be a function of an installed software package, and the like. It should be understood that the various embodiments are not limited to the arrangements and instrumentalities shown in the drawings.

[0061] As used herein, an element or step recited in the singular or pr...

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Abstract

The present invention relates to methods and systems for performing joint estimation techniques in image reconstruction. A method for correcting an emission tomography image includes obtaining a first modality image dataset, identifying areas in the first modality dataset that may be impacted by respiratory motion, and applying joint estimation attenuation correction techniques to improve emission image data. A medical imaging system is also described herein. Emission tomography may include positron emission tomography (PET) and single photon emission computed tomography (SPECT).

Description

Background technique [0001] The subject matter disclosed herein relates generally to imaging systems, and more specifically, to methods and systems for performing correction and reconstruction of medical images. [0002] Multimodal imaging systems scan using different modalities, for example, computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomography (PET), and single photon emission computed tomography (SPECT). During operation, image quality can be affected by various factors. One such factor is patient motion. Another factor is inaccurate attenuation correction between images acquired using two different imaging modalities caused by patient motion. [0003] Accordingly, at least one known PET-CT system utilizes data generated by the CT system to generate attenuation corrections for PET scan data. Specifically, a plurality of transmit attenuation correction factors are derived from CT data generated during a CT scan, wherein the CT system is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/00
CPCG06T11/003G06T2211/416G06T11/008G06T2207/10072G06T2207/30061G06T2211/412G06T7/12G06T2207/10081G06T2207/10104
Inventor S.D.沃伦韦伯
Owner GENERAL ELECTRIC CO
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