In-vitro locator beacon and location registration method using locator beacon

A technology of external positioning and positioning marks, applied in the fields of application, medical science, image data processing, etc., can solve the problem that functional imaging images cannot be used in radiotherapy, difficult to simulate PET images and high-quality diagnostic CT fusion, PET images and CT images Unable to share coordinate system transmission and other issues

Inactive Publication Date: 2015-04-08
杭州市肿瘤医院
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Problems solved by technology

[0003] At present, it has been possible to transmit the DICOM format of diagnostic grade CT to the workstation of nuclear medicine department, use the same machine CT image collected during PET imaging as a bridge to register with 16 rows of CT images, and use special image fusion software to locate bone As the main reference method, translation, rotation, zooming and other transformation and positioning operations are performed on the different machine CT images, so that the two sets of CT images can achieve accurate alignment in terms of spatial position and anatomical structure, and at the same time complete the image fusion of simulated PET and different machine CT , this method has the fo...

Method used

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  • In-vitro locator beacon and location registration method using locator beacon
  • In-vitro locator beacon and location registration method using locator beacon
  • In-vitro locator beacon and location registration method using locator beacon

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Embodiment 1

[0034] Embodiment 1: as figure 1 As shown, an in vitro locator includes a locator body 1, and the locator body is spherical. A cavity 2 for accommodating liquid is arranged inside the positioning target body, the outer wall of the positioning target body can be pierced by a syringe needle, and the wall thicknesses of all parts of the positioning target body are equal. The maximum size of the outer wall of the locator body is 15mm-22mm, preferably 20.5mm in this embodiment.

[0035] Positioning methods such as Figure 12 As shown, the steps are as follows:

[0036] Preliminary determination of the location to be tested: determine the location to be tested of the object to be tested; figure 2 As shown, the fixed positioning target body 1 is pasted on the object 3 to be tested.

[0037]In vitro positioning mark positioning stage: inject physiological saline into the cavity of the first group of external positioning marks until the cavity is filled, and seal the injection inl...

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Abstract

The invention relates to image registration, in particular to an in-vitro locator beacon and a location registration method using the locator beacon. The in-vitro locator beacon comprises a locator beacon body, wherein a cavity for accommodating liquid is formed inside the locator beacon body; the outer wall of the locator beacon body can be punctured by an injector pinhead; the wall thicknesses of all parts of the locator beacon body are equal. The location registration method achieves beacon overlapping location registration through the in-vitro locator beacon. The in-vitro locator beacon has the benefits of precise location registration, high registration efficiency and high fusion quality of special SPECT (single photon emission-computed tomography) simulation PET (positron emission tomography) images and different machine CT (computed tomography) images for radiotherapy and the like, is mainly applied to tests and can also be applied to location of tumor positions.

Description

technical field [0001] The invention relates to image registration, in particular to an external positioning mark and a positioning and registration method using the positioning mark. Background technique [0002] SPECT / CT can realize simulated PET imaging. However, due to the low current of the CT tube on the same machine, the obtained CT image cannot reach the diagnostic level, and can only be used as attenuation correction and rough positioning. PET / CT fusion on the same machine The image quality is poor and cannot be used for target volume delineation and tumor localization. Since most hospitals already have 16 or even 64 rows of high-resolution spiral CT, how to effectively use the existing diagnostic CT images to realize the organic combination of SPECT simulated PET functional images and high-quality CT images is not equipped with large PET / It is a problem urgently needed to be solved in CT tumor radiotherapy center. The key technical issue of SPECT / CT and non-same...

Claims

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Application Information

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IPC IPC(8): A61B6/03A61B19/00G06T7/00
Inventor 吴式琇李夏东
Owner 杭州市肿瘤医院
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