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Method and system for correcting depth effect of positron emission tomography

A technology of positron emission and correction method, which is applied in the field of nuclear medicine detection and imaging, can solve the problems of poor tangential resolution improvement, high calculation cost, and poor stability of iteration times, and achieve image radial and tangential spatial resolution The effect of increased rate, improved image quality, and accurate positioning

Active Publication Date: 2016-03-02
山西锦地裕成医疗设备有限公司 +1
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Problems solved by technology

However, these software-implemented methods also have disadvantages such as high computational cost, poor stability of the number of iterations, or poor improvement in tangential resolution.

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  • Method and system for correcting depth effect of positron emission tomography
  • Method and system for correcting depth effect of positron emission tomography
  • Method and system for correcting depth effect of positron emission tomography

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Embodiment Construction

[0038]Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repeated descriptions will be omitted.

[0039] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of the embodiments of the present invention. However, those skilled in the a...

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Abstract

The invention discloses a method and system for correcting the depth effect of a positron emission tomography. The method includes the steps of establishing a multi-layer crystal response line model, obtaining actual conforming case data output by a PET detector, expanding the actual conforming case data to generate expansion response line data according to the multi-layer crystal response line model, and determining corrected response line data according to the expansion response line data. Through the method, after the depth effect of the detector is corrected for single-layer crystal PET data or few-layer crystal PET data, positioning of the space position of a reestablished image is more accurate, image radial and tangential space resolution ratios are greatly increased, the image quality is remarkably improved, and the reestablishing effect basically the same as that of multi-layer crystal PET data on hardware can be achieved.

Description

technical field [0001] The invention relates to the field of nuclear medicine detection and imaging, in particular to a depth effect correction method and system of a positron emission tomography scanner. Background technique [0002] Positron emission tomography (PET) is an important tomographic imaging device in the field of nuclear medicine, and has been widely used in diagnosis and research in the medical field. PET can effectively detect the spatiotemporal distribution of radioactive tracer atomic drugs injected into the organism. [0003] The main element detector in PET consists of scintillation crystals, photomultiplier tubes and front-end electronics. In PET, a drug with a radionuclide is injected into the human body. The drug with a radionuclide decays in the human body to produce positrons, and the positrons annihilate with the negative electrons in the human body, producing two back-to-back gamma photons . The two γ photons generated by the annihilation of pos...

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Application Information

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IPC IPC(8): A61B6/03
CPCA61B6/037A61B6/4233A61B6/5211A61B6/585
Inventor 单保慈刘双全葛红红孙校丽贠明凯高娟李默涵柴培章志明王骏飞韩强强刘志蓉
Owner 山西锦地裕成医疗设备有限公司
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