Image reconstruction method and device

An image reconstruction and time position technology, which is applied in the field of medical imaging, can solve the problems of affecting image reconstruction quality, inaccurate reconstruction results, inaccurate distribution of random scattering factors according to time periods, etc., and achieve the effect of true data accuracy and image accuracy

Active Publication Date: 2018-10-12
SHENYANG NEUSOFT MEDICAL SYST CO LTD
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Problems solved by technology

However, the current List-Mode-based reconstruction method has inaccurate distribution of random scattering factors

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  • Image reconstruction method and device
  • Image reconstruction method and device
  • Image reconstruction method and device

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Embodiment Construction

[0030] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0031] Based on time of flight (Time of flight, TOF) PET, List-Mode data can be used for reconstruction when performing image reconstruction. List-Mode data can retain the time difference information of each matching event. The image reconstruction method provided in the present disclosure also performs TOF reconstruction based on List-Mode data, but the reconstruction method is impro...

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Abstract

The present disclosure provides an image reconstruction method and device. The method includes: acquiring instant coincident data obtained by scanning an inspected object; and acquiring a true coincident ratio coefficient corresponding to each coincident event in the instant coincident data according to the instant matching data; and performing image reconstruction based on List-Mode according tothe true coincidence ratio coefficient. The present disclosure makes the obtained true coincident data more accurate, and the reconstructed image is also more accurate.

Description

technical field [0001] The present disclosure relates to medical imaging technology, in particular to an image reconstruction method and device. Background technique [0002] PET (Positron Emission Computed Tomography, Positron Emission Computed Tomography) is more and more widely used in hospitals and is one of the most advanced large-scale medical diagnostic imaging equipment today. The working principle of PET is that a drug containing a radionuclide is injected into the object to be inspected. The radionuclide decays to generate a positron, and the annihilation of the positron and the surrounding negative electron produces a pair of back-to-back gamma photons, which pass through the After the inspection object arrives at the PET detector, it is received and recorded. The detector receives the coincidence event, and the image reconstruction is performed according to the coincidence event to obtain the nuclide distribution map that emits positrons. [0003] After decades ...

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Application Information

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IPC IPC(8): G16H30/20G16H30/40
CPCG16H30/20G16H30/40
Inventor 刘勺连孙智鹏李运达李明
Owner SHENYANG NEUSOFT MEDICAL SYST CO LTD
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