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Nuclear medicine imaging apparatus and radiation therapy apparatus

An imaging device and treatment device technology, which is applied in computerized tomography scanners, echo tomography, etc., can solve the problem of long-time PET images and achieve the effect of shortening the generation time

Active Publication Date: 2011-12-28
TOSHIBA MEDICAL SYST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, in conventional techniques, reconstruction by back projection processing takes a long time, and as a result, there is a problem that it takes a long time to generate a PET image.

Method used

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  • Nuclear medicine imaging apparatus and radiation therapy apparatus
  • Nuclear medicine imaging apparatus and radiation therapy apparatus
  • Nuclear medicine imaging apparatus and radiation therapy apparatus

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Embodiment Construction

[0031] Hereinafter, as an example of a nuclear medicine imaging apparatus and a radiotherapy apparatus according to the present invention, a PET apparatus 100 related to Embodiment 1 will be described.

[0032] The PET device 100 related to the first embodiment does not generate a PET image by performing reconstruction based on the back projection process, but by centering on the spatial position of the positron estimated on the LOR (Line Of Response) Pixel values ​​are assigned to pixels of the amount of blur width set by the time resolution of the detector to generate a PET image. Thus, according to the PET apparatus 100 related to Embodiment 1, the generation time of the PET image can be shortened, and the PET image can be displayed in real time during shooting. This function is realized mainly by processing performed by the image generation unit 26 described later.

[0033] use Figure 1 to 11 The structure of the PET apparatus 100 related to Embodiment 1 will be described. fi...

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Abstract

The invention provides a nuclear medicine imaging apparatus and a radiation therapy apparatus which can shorten the forming time of PET images. The nuclear medicine imaging apparatus according to an embodiment includes a gradation width storage, an estimating unit, and an image generating unit. The gradation width storage is configured to store the gradation width of an image determined by the temporal resolution of a detector. The estimating unit is configured to estimate the spatial position of a positron on the basis of the spatial position of a set of detectors and a set of detection times. The image generating unit is configured to allocate pixel value to pixels corresponding to the gradation width around the estimated spatial position such that a spatial resolution corresponding to the temporal resolution is reflected on a line linking the set of detectors, thereby generating an image.

Description

[0001] Cross references to related applications [0002] This application is based on the prior Japanese Patent Application No. 2010-128226 filed on June 3, 2010 and claims priority, the entire content of which is incorporated in this application by reference. Technical field [0003] The present invention relates to a nuclear medicine imaging device and a radiotherapy device. Background technique [0004] Conventionally, as a nuclear medicine imaging apparatus, a positron emission computed tomography apparatus (hereinafter, a PET (Positron Emission Computed Tomography) apparatus) is well known. PET devices generate functional images of tissues in the human body, for example. Specifically, in the imaging performed by the PET device, the drug marked by the positron radionuclide is first injected into the subject. Thereby, the positron emitting nuclide selectively absorbed by the biological tissue in the subject releases positrons, and the released positrons combine with the electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03
CPCA61B6/037
Inventor 高山卓三
Owner TOSHIBA MEDICAL SYST CORP