World Neurosurg
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The purpose of this study was to determine whether combined diffusion-weighted imaging and dynamic susceptibility contrast-enhanced perfusion-weighted imaging magnetic resonance imaging can be used to differentiate between common malignant brain tumors, including lymphomas and high-grade gliomas. ⋯ The combination of rCBV and ADC can facilitate the differentiation between PCNSLs and GBMs.
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The biopsy is recognized as the most accurate method to determine the histologic characterization of sellar germ cell tumors. It is difficult to evaluate the prognosis before histologic confirmation. ⋯ Diameter >15 mm, octamer-binding transcription positivity, or NGGCT was associated with a poorer prognosis for patients with sellar GCTs, whereas the combination of chemotherapy and radiotherapy was associated with a better prognosis.
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Superficial temporal artery (STA)-to-middle cerebral artery (MCA) bypass is an established surgical technique for achieving revascularization. It is important to select the proper recipient artery of the MCA. Three-dimensional computed tomographic angiography (3D-CTA) and conventional angiography are useful in the selection process but need contrast agents. The authors have designed a coloring MRA technique that needs no agents to visualize the recipient artery. Retrospective evaluation of the efficacy and limitation for selection of the recipient artery and decision of the place and size of the craniotomy were carried out. ⋯ The coloring MRA technique was not inferior to 3D-CTA with respect to the size of craniotomy. This novel technique was found to be very helpful not only for the virtual identification of the proper recipient artery but also for preoperative simulation such as decisions about length of donor artery, location, and size of craniotomy.
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The differentiation of germinoma from other tumors by conventional magnetic resonance imaging (MRI) can be very difficult. The purpose of our study was to determine whether diffusion-weighted imaging (DWI) and single-voxel proton magnetic resonance spectroscopy (1H-MRS) could provide additional useful information for a definitive diagnosis of germinomas. ⋯ Lower ADC values and high lipid peaks detected on 1H-MRS are characteristics of germinomas.
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To investigate clinical and radiologic results of anterior cervical discectomy and fusion for cervical spondylotic myelopathy in elderly patients with T2-weighted increased signal intensity (ISI), focusing specifically on the quantitative analysis of ISI. ⋯ Compared with young patients with ISI, the elderly patients had a lower preoperative JOA score, a greater preoperative SCR, and a longer preoperative ISI length, indicating poor surgical outcomes.