1,721,069 research outputs found
Somatomotor functional MRI in a hypertensive arachnoid cyst
No full textIn this article the authors report the study by functional MRI, before
and after surgery, of the motor cerebral cortex surrounding a large
hypertensive arachnoid cyst. They stress that the functional modifications
due to surgery are more relevant than suggested by the simple
morphological data
Advanced neuroimaging techniques in the management of glioblastoma multiforme.
No full textDespite the extensive research efforts over the past century, glioblastoma multiforme (GBM) remains an ominous diagnosis leading fast to progressive disability and death despite the aggressive treatment including microsurgical resection, chemotherapy, radiotherapy and stereotactic radiosurgery. Advanced neuroimaging techniques, such as volumetric acquisitions, spectroscopy, diffusion and perfusion studies added to conventional imaging, provide in selected cases a non-invasive alternative to pathological diagnosis but they are also precious tools to define the boundaries of image-guided microsurgical resection and/or radiosurgical ablation. This paper reviews the role of advanced neuroimaging techniques in the diagnosis and treatment of GBM
Intramedullary teratomas: Two case reports and a review of the literature
No full textObjective: Intramedullary teratomas are extremely rare tumours. A review of the literature found only reports of 59 cases, three of which were treated by us. The most common localisation for these tumours is in the medullary conus. According to our experience as well as more recent reports, MRI images allow a pre-operative diagnosis to be made. Clinical Presentation: We treated two cases of intramedullary teratoma of the conus: that of a 41-year-old woman and that of a 40-year-old man. Both suffered from motor and sensory disorders, and the woman also suffered from urinary disorders. CT and MRI enabled us to diagnose an intramedullary turnout and to suspect a dysembryogenic origin. Intervention: Both patients were treated surgically; the surgical removal of the tumour was extensive but not total because of the tenacious adhesions of the tumour to the adjacent parenchyma. Conclusion: Surgery is the therapy of choice in cases of intrame-dullary teratomas; the removal, though incomplete, leads to a definite improvement of symptoms. In our two cases the follow-up has been 7 years and 6 years, respectively. No tumour re-growth occurred during this period
Comparazione tra risonanza magnetica e tomografia computerizzata nella patologia del sistema nervoso centrale
No full textMAGNETIC RENONANCE IMAGING OF A CASE OF SPONTENEOUS resolution of syringomyelia associated with type I Chiari malformation
No full textCerebral venous thrombosis: A case series and a neuroimaging review of the literature
No full textCerebral venous thrombosis (CVT) is a rare condition, difficult to diagnose because of its non specific clinical symptoms. In some cases CVT can mimic other conditions as subarachnoid hemorrhage, ischemia or tumor and for these reasons diagnosis is delayed or missed. CT, DSA and MRI findings help to obtain an early diagnosis and to distinguish it from other diseases. Our cases involved four patients with no signs or symptoms suspected for CVT and without risk factors associated to this disease; furthermore some early imaging findings observed in these patients could mimic other diseases. The aim of presenting these cases is to underline the importance of some findings at imaging techniques in obtaining an early diagnosis of CVT; in particular we describe the usefulness of MRI with gradient echo sequences (GRE) in detecting the venous thrombus, suggesting that GRE sequences should be included in the MRI protocol when a CVT is suspected. We also underline the role of radiologists in helping neurologists to make an early diagnosis of CVT or when in doubt to encourage further investigations in order to begin the anticoagulation therapy as soon as possible avoiding the onset of complications as permanent parenchymal damage, cerebral hemorrhage and venous infarction
Functional MRI of the human spinal cord: attempt at characterizing the temporal response
No full text
- …
