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Cardiac region detection from motion analysis of small scale reconstruction

A motion area, moving area technology, applied in the field of diagnostic imaging, can solve the problems of time-consuming, performance paradigm-dependent variability, etc., to achieve the effect of improving resolution

Inactive Publication Date: 2008-10-15
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these techniques often suffer from significant paradigm-dependent variability in performance when applied to post-processing operations on high-resolution datasets, and thus often require manual correction
Additionally, these techniques are time-consuming

Method used

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  • Cardiac region detection from motion analysis of small scale reconstruction
  • Cardiac region detection from motion analysis of small scale reconstruction

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Embodiment Construction

[0016] Referring to FIG. 1 , an imaging system 10 includes a computed tomography scanner 12 having a radiation source 14 that produces a radiation beam, preferably a cone or wedge beam, that is directed into an examination region 16 . The radiation beam interacts with and is partially absorbed as it traverses a region of interest of an imaging subject disposed in the examination region 16, resulting in a spatially varying radiation absorption as it passes through the examination region. A radiation detector 18 , preferably a two-dimensional detector, is used to detect absorption-attenuated radiation after passing through the examination region 16 . The path between source 14 and each radiation detecting element of detector 18 is represented as a ray.

[0017] Preferably, radiation source 14 produces cone beam X-rays. The radiation source 14 and the detector 18 are preferably mounted on the rotating gantry 20 in an opposing manner, so that the detector 18 continuously receives...

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Abstract

A diagnostic imaging system (10) images overlapping cyclically moving and stationary regions of a subject. A low resolution reconstruction processor (50) reconstructs acquired data into a series of consecutive low resolution volumetric image representations. A motion region determining processor (70) determines a boundary of the moving region from the consecutive low resolution volumetric image representations. A high resolution reconstruction processor (60) reconstructs the acquired data into a high resolution volumetric image representation. A stationary region removing processor (84) removes stationary region image data from the high resolution volumetric image representation, which stationary region image data lies exterior to the moving region boundary. A display (86) displays the high resolution volumetric image representation.

Description

technical field [0001] This application relates to the field of diagnostic imaging. It has particular application to cardiac computed tomography imaging of subjects and will be described in detail with reference thereto. However, it is also applicable to other types of computed tomography imaging, single photon emission computed tomography (SPECT), positron emission tomography (PET), magnetic resonance imaging (MRI), three-dimensional X-ray imaging, etc. Background technique [0002] Typically, a computed tomography system includes an X-ray source and an X-ray detector that rotates around an object to be examined. X-ray beams from an X-ray source illuminate the object from multiple directions. An X-ray detector receives X-radiation in various directions through the object, forming an attenuation profile in the direction of interest. The attenuation profile represents the attenuation of the X-rays incident into the object due to the absorption and scattering of the X-rays ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T5/00
CPCG06T7/0083G06T7/2006G06T2207/10081G06T2207/30048G06T7/12G06T7/215
Inventor G·拉维J·勒西克
Owner KONINKLIJKE PHILIPS ELECTRONICS NV