A multi-modal homomorphic isochronous medical imaging system and imaging method thereof

Abstract

The invention discloses a multi-modal homomorphic isochronic medical image imaging system and a multi-modal homomorphic isochronic medical image imaging method. The imaging system comprises an X-ray computed tomography (X-ray CT) device, a positron emission tomography (PET) device, a single photon emission computed tomography (SPECT) device, a rotating device, a scanning table device, a data acquisition system and a computer, wherein the X-ray CT device, the PET device and the SPECT device are arranged on the same rotating device, and share one scanning table device and the same scanning area to form the multi-modal imaging system. The same sampling angle is subjected to time-share scanning in three modes and is rotated by one circle, multi-modal homomorphic isochronic imaging is realized, different imaging equipment complements advantages of one another, the acquired image results are more accurate and reliable, multi-modal dynamic acquisition in real sense is realized.

Description

technical field [0001] The invention relates to the field of biomedical imaging, in particular to a multimodal homomorphic isochronous medical imaging system and an imaging method thereof. Background technique [0002] Medical imaging technology has always been an important means of diagnosing diseases, and it is also the earliest engineering means used by people for medical diagnosis. In 1895, German scientist Wilhelm Conrad An unknown ray that can penetrate matter was discovered while experimenting with cathode ray tubes, Roentgen Name it "X-Ray". Mrs. Roentgen's hand bone X-ray angiography also created a radiology using X-rays for medical diagnosis - X-ray angiography, and also created a new era of the combination of engineering technology and medicine. Medical tomography (Computed Tomography) began in the 1860s or earlier, and it was not until the 1980s that the systematic study of tomographic image fusion began. Following the early flat-panel image fusion, until t...

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Problems solved by technology

[0003] Any molecular imaging with a single modality has its own insurmountable defects, which cannot meet the urgent needs of life science research - to fully and accurately explain the life process

For example, although Positron Emission Tomography (Positron Emission Tomography) PET has high detection sensitivity, it cannot detect multiple molecules at the same time because the radiation photon energy is fixed at 511keV; Single Photon Emission Computed Tomography (Single Photon Emission Computed Tomography) SPECT does not require an expensive cyclotron Preparation of nuclide drugs, but it is difficult to find SPECT radiotracers involved in metabolism, and its sensitivity is 1 to 2 orders of magnitude lower than that of PET

At present, the three modalities of X-rayCT, PET, and SPECT have been combined using hardware methods, but the imaging of the three modalities is not homogeneous and isochronous data acquisition

The imaging time of nuclear medicine imaging methods such as PET and SPECT is generally tens of minutes, so multi-modal dynamic acquisition with high isochronism requirements is often unsatisfactory

For the field of molecular medical imaging, the multi-modal imaging devices in the prior art place each imaging modality in a different position, fail to share the same scanning area, and can only use time-sharing scanning, which cannot Achieve X-rayCT / PET / SPECT three-modal homomorphic isochronous scanning imaging

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