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Retrospective sorting of 4d ct into breathing phases based on geometric analysis of imaging fiducials

A breathing phase and imaging technology, applied in the field of three-dimensional imaging, can solve problems such as redundant camera volume and hinder the use of other instruments, and achieve the effect of avoiding time offset errors

Active Publication Date: 2013-04-24
KONINKLIJKE PHILIPS ELECTRONICS NV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To accommodate multiple patient sizes and shapes while keeping the line of sight unobstructed requires redundant cameras and additional bulk
Also, the need to keep the line of sight clear prevents the use of other instruments

Method used

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  • Retrospective sorting of 4d ct into breathing phases based on geometric analysis of imaging fiducials
  • Retrospective sorting of 4d ct into breathing phases based on geometric analysis of imaging fiducials
  • Retrospective sorting of 4d ct into breathing phases based on geometric analysis of imaging fiducials

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Experimental program
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Embodiment Construction

[0023] refer to figure 1 Computed tomography (CT) scanner 10 includes a stationary housing 12 that defines an imaging region 14, a subject support 16 that supports a patient, animal or other imaging subject 18 that breathes or performs other periodic movements according to a respiratory cycle. Housing 12 includes components adapted to perform transmission tomographic data acquisition for imaging slices, slices or other regions. For example, some suitable components may include x-ray tubes and x-ray detector arrays mounted on opposite sides of imaging region 14 on a rotating gantry disposed within housing 12 (not shown in housing 12, but containing x-ray tube , detector array and rotating gantry). The illustrated scanner 10 is a diagrammatic representation of a BrillianceTM CT scanner (supplied by Royal Philips Electronics AG, Eindhoven, The Netherlands); however, virtually any CT scanner can be used, as well as other types of imaging scanners, Examples include positron emiss...

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PUM

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Abstract

A respiratory marker (40, 140, 240, 340, 440) includes an elongated detectable portion (42, 342, 442) that is operatively coupled with respiration of an imaging subject such that the elongated detectable portion moves with the respiration. The elongated detectable portion is arranged to intersect images acquired by an imaging scanner (10) at different times and at different positions along a scanner axis (20), and is detectable as a marker feature in the images. A marker position finder (52, 54) is configured to determine positions of the marker features in the images.

Description

technical field [0001] The present invention relates to three-dimensional imaging technology. It has particular application to, and is described with particular reference to, three-dimensional computed tomography. However, the following is also applicable to other imaging modalities, such as Positron Emission Tomography (PET), Single Photon Emission Computed Tomography (SPECT), etc. Background technique [0002] Computed tomography is used in numerous applications that require accurate positional registration. For example, computed tomography is sometimes used to image malignant tumors and surrounding tissues and organs, which are used during radiation treatment planning sessions. Computed tomography image features should be registered with the geometry of the radiation therapy facility to make this planning process efficient. In interventional imaging, computed tomography is used to guide the insertion of catheters, biopsy needles, or other interventional instruments. A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00A61B19/00
CPCA61B6/5217G06T2207/30004A61B2019/542G06T7/0042A61B19/54A61B2019/5238A61B5/7289G06T2207/10076A61B6/12G06T11/005G06T2211/412A61B2090/392A61B2090/376A61B90/39G06T7/73G16H50/30
Inventor D·A·贾弗雷M·R·考斯J·D·P·霍伊萨克T·G·珀迪
Owner KONINKLIJKE PHILIPS ELECTRONICS NV