Research progress of glioma volume and spatial distribution in amino acid PET/MR multimodal imaging
Gliomas are the most common primary malignant brain tumors in adults,and resection of tumours based on structural magnetic resonance (MR) imaging is the conventional treatment. However,structural MR imaging is difficult to accurately demonstrate the volume and spatial distribution of the glioma,which leads to postoperative tumour residuals that may shorten the survival of patients. There are overlaps and differences in the volume and spatial distribution of gliomas shown by amino acid positron emission tomography/magnetic resonance (PET/MR) multimodal imaging. This paper reviewed the differences in the volume and spatial distribution of gliomas shown by amino acid PET and structure,perfusion,and molecular images of MR to explore the heterogeneity of tumour spatial distribution in multimodal images and compare the accuracy of spatial distribution of tumours in different modal images. It will assist developing the optimal multimodal image combination based on PET/MR for guiding glioma surgery,to maximize the safe resection of the tumour and improve the prognosis of glioma patients,as well as to provide insights for further research on spatial distribution characterization of PET/MR images mediated by the molecular biological mechanism of glioma.