1,720,978 research outputs found
Pre-operative and post-operative assessment of patient’s vascular condition and anatomy.
No full textStudio RM 3T nella sorveglianza degli aneurismi intracranici trattati con stent diversori di flusso.
No full textLesione ischemica del talamo antero-ventrale in pazienti con epilessia: presentazione d 3 casi studiati con RM.
No full textMRI findings in low grade tumours associated with focal cortical dysplasia
No full textMagnetic resonance imaging (MRI) is mandatory to identify the epileptogenic zone in refractory temporal lobe epilepsy (TLE). The correct identification of lesions is essential to obtain good post-surgery seizure control. Low grade tumors (LGT) and focal cortical dysplasia (FCD) ore common findings in symptomatic TLE, and frequently coexist. The aim of thid study was to identify the MRI characteristics in the diagnosis of FDC associated with LGT. We analyzed 24 subjects with TLE who underwent tailored surgery. They all had LGTs. Two expert neuroradiologists analyzed the imaging data and compared them with histological results, hypothesizing the cases of diagnostic errors in the identification of FCD. We selected three exemplary cases to report the most important causes of errors. An incomplete MRI protocol, the large dimensions of the tumour, infiltration and related oedema were the most important factors limiting MRI accuracy. MRI can be limited by an incomplete protocol. In addition, the presence of an LGT may limit the neuroradiological diagnosis of FCD in the temporal lobe. Advanced MRI techniques could help reveal subtle lesion that eluded a previous imaging inspection
Quantitative cervical proton magnetic resonance spectroscopy of multiple sclerosis.
No full textSince some years brain
proton MR spectroscopy (1H-MRS) was considered
a useful technique for evaluating
neuronal/axonal damage and demyelination
in multiple sclerosis (MS). Despite frequently
disability in MS is related to spinal
cord lesions there are few published works
on spectroscopy study of cervical diseases
because of the technical difficulties limiting
the quality of spectroscopy data. Recently
we presented a protocol for quantitative
cervical spinal cord single voxel MRS with
the first mean relative concentrations ratios
for NAA, Cr, Cho and mI in a group of
ten healthy volunteers using a clinical 3T
system. On this study we applied the same
acquisition and post-processing protocol to
quantify the main CNS metabolites on the
cervical spinal cord plaques of a group of 15
MS patients and compared them with the
healthy metabolite content
Status dissociatus after surgery for tegmental ponto-mesencephalic cavernoma: a state-dependent disorder of motor control during sleep.
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