Shenyang Neusoft Medical Systems Co., Ltd.

Shanghai Neusoft Medical Technology Co., Ltd.

Yue Liu

Ming Li

Zhipeng Sun

Yunda Li

A radioactive source and preparing as well as applying methods are disclosed. According to the method of preparing the radioactive source, when a preset dose of a radiopharmaceutical with a half-life shorter than a preset threshold is provided, a solid radioactive source having a predetermined shape may be obtained by mixing and moulding the radiopharmaceutical with a preset solution and a moulding material. The moulding material may comprise a curing agent and/or a water-absorbing material.

Preparation method of radioactive source

Methods, devices, and systems for reconstructing Positron Emission Computed Tomography (PET) images are provided. In one aspect, a method includes: for each of coincidence events including at least one true coincidence event and at least one scattering coincidence event, determining an emission path of the coincidence event according to photon information of the coincidence event, the photon information of the coincidence event including time data, position data, and angle data of each of two photons involved in the coincidence event, determining an annihilation position of the coincidence event according to the emission path of the coincidence event and the time data of each of the two photons involved in the coincidence event, and reconstructing a PET image according to the annihilation position, the emission path and the photon information of each of the coincidence events.

Reconstructing PET image

Method of correcting PET image attenuation and PET/MRI devices are provided. In one aspect, an MRI image of a subject is segmented to obtain respective MRI sub-images corresponding to attenuation units of the subject, respective pseudo CT sub-images corresponding to the MRI sub-images are obtained based on an MRI-CT atlas, the respective pseudo CT sub-images corresponding to the MRI sub-images are spliced to obtain a pseudo CT image corresponding to the MRI image, and attenuation correction is performed for a PET image of the subject according to the pseudo CT image, wherein the PET image and the MRI image are obtained through a same scan process for the subject.

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Shenyang, China

Yue Liu