Objective: To explore the related risk factors of intracranial infection (ICI) after elective surgery in neurosurgery and provide the basis for clinical prevention and control of intracranial infection. Methods: The clinical data of 14 infected patients and 144 non-infected patients undergoing neurosurgery in our hospital from October 2016 to September 2017 were collected. The incidence of postoperative intracranial infection was calculated, and the affected patients were followed Factor analysis, using SPSS 22. 0 software for statistical analysis. Results: Of the 158 patients, 14 developed intracranial infection. Conclusion: There are many risk factors for intracranial infection after neurosurgical aneurysm surgery. In clinical practice, specific preventive measures should be taken to reduce the incidence of intracranial infection.

The combination of rCBV values derived from T1-perfusion MRI and SWI derived ITSS scores improves the diagnostic accuracy for discrimination of grade III from grade IV gliomas.

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4 Technical Efficacy: Stage 5 J. Magn. Reson. Imaging 2018;47:1616-1625.

Background/Aims: Perfusion magnetic resonance imaging (MRI) is useful for preoperative assessment of brain tumors. Dynamic susceptibility contrast perfusion MRI is commonly used for evaluation of brain tumors. Dynamic contrast-enhanced (DCE) MRI is an alternative method that has mainly been used in adult brain tumors. In this preliminary study, we report our initial experience with the DCE perfusion MRI in pediatric brain tumors. Methods: Sixty-four newly diagnosed pediatric brain tumor patients underwent DCE perfusion MRI on a 3-T scanner. Hemodynamic and kinetic parametric maps were generated and the regions with the highest values were measured on each map. Statistical differences were sought to differentiate between low-grade tumors, high-grade tumors, and medulloblastomas. The perfusion metrics of common posterior fossa tumors were also compared. Results: Relative corrected cerebral blood volume (rCBV) and fractional plasma volume measures differed significantly between high- and low-grade tumors (p < 0.05). High-grade tumors could be differentiated from low-grade tumors, with an rCBV cutoff value of 2.41 and 88.6% sensitivity and 65% specificity. There was no significant difference in K^trans, K_ep, V_e, or λ^tr between these 2 groups of tumors. rCBV, relative quantification of the cerebral blood flow, and permeability indices were found to be significantly different in various posterior fossa tumors, i.e., pilocytic astrocytoma, ependymoma, and medulloblastoma (p < 0.05). Conclusion: DCE-derived perfusion metrics are useful in differentiating high-grade tumors from low-grade ones and discriminating among various posterior fossa tumors in the pediatric age group.

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Patient presented with a dural-based mass lesion and was diagnosed as having meningioma on imaging. Post-resection histological examination revealed a low grade follicular lymphoma. The patient received cranial radiotherapy and is recurrence-free at 6-month follow-up. Primary dural follicular lymphoma is an exceedingly rare entity with only as few as six reported cases. Herein, the clinico-radio-pathological appearances and treatment protocol of this entity are discussed.