Johanna Quick

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To investigate glycine (Gly) concentrations in low- and high-grade gliomas based on 1H MR spectroscopic imaging (MRSI) with short and long echo time (TE). Myoinositol (MI) and Gly appear at the same resonance frequency of 3.56 ppm, but due to strong coupling the MI signal dephases more rapidly. Therefore, their contribution to the 3.56 ppm signal should be(More)
The role of repeat resection in the multimodal treatment of gliomas is unclear. Repeat surgery theoretically carries a higher risk of inducing neurological deficits, which might even out any advantage of cytoreduction. We sought to determine whether the occurrence of perioperative infarction is higher for repeat surgery than for first surgery, and sought to(More)
BACKGROUND Tractography based on diffusion tensor imaging has become a popular tool for delineating white matter tracts for neurosurgical procedures. OBJECTIVE To explore whether navigated transcranial magnetic stimulation (nTMS) might increase the accuracy of fiber tracking. METHODS Tractography was performed according to both anatomic delineation of(More)
In the treatment of glioblastoma (GBM) the impact of radical tumor resection as first line therapy is beyond controversy. The significance of a second resection in case of tumor-recurrence remains unclear and is an issue of debate. Since GBMs always recur, it is important to determine whether or not patients will benefit from repeat surgery. We performed a(More)
Cubital tunnel syndrome (CuTS) is a frequent neuropathy, leading to sensor-motoric dysfunction. Many patients even present with muscular atrophy as a sign for severe and long-lasting nerve impairment, usually suggesting unfavourable outcome. We analysed if those patients benefit from surgical treatment on a long-term basis. Between January 2010 and March(More)
BACKGROUND Routine postoperative imaging (PI) following surgery for intracranial meningiomas is common practice in most neurosurgical departments. The purpose of this study was to determine the role of routine PI and its impact on clinical decision making after resection of meningioma. METHODS Patient and tumor characteristics, details of radiographic(More)
Functional outcome after resection of tumors arising from the gyrus cinguli (GC), part of the limbic system, is not well analyzed. The purpose of this study was to evaluate the feasibility and functional outcome of surgical treatment for a series of 65 patients with gliomas involving the GC. Preoperative data, extent of resection, functional outcome(More)
For safe resection of lesions situated in or near eloquent brain regions, determination of their spatial and functional relationship is crucial. Since functional magnetic resonance imaging and intraoperative neurophysiological mapping are not available in all neurosurgical departments, we aimed to evaluate brain surface reformatted imaging (BSRI) as an(More)
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