Publications by authors named "Zhiguang Si"

Spinal osteoblastoma is rare clinically, with insidious onset, atypical symptoms, and various imaging manifestations, which can easily lead to misdiagnosis and delayed diagnosis. It can cause severe neurological dysfunction in patients with intermediate to advanced stages and may easily recur after surgery. Imaging examinations such as radiography, computed tomography, magnetic resonance imaging, and positron emission tomography have different value for the diagnosis of spinal osteoblastoma, but they lack specificity.

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Background: To analyze the features of CT, MRI and PET/CT and their diagnostic value for spinal osteoblastomas (OBs).

Methods: The radiological and clinical data of 21 patients with histopathologically-confirmed spinal OBs were analyzed retrospectively.

Results: Sixteen of the 21 cases were benign and 5 were aggressive OBs.

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Purpose: This study sought to monitor the dynamic process of lymph node (LN) metastasis with intravoxel incoherent motion diffusion-weighted imaging (IVIM-DWI), and to investigate the impact of disease course on the detection of metastatic LNs by IVIM-DWI.

Methods: Twenty female New Zealand rabbits with 2.5-3.

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Objectives: To increase our understanding of the imaging features of central neurocytoma (CN) and improve the preoperative MRI diagnosis accuracy.

Methods: Preoperative MR images of 30 CNs and another 68 intraventricular non-CN tumours were analysed by one experienced neuroradiologist retrospectively to identify previously reported features and new features of CN. Six blinded radiologists independently reviewed all these MRI images, and scored all characteristic features on a five-point scale.

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