1,721,034 research outputs found
Ultrasonography of the Optic Nerve Sheath Diameter for Diagnosis and Monitoring of Acute Mountain Sickness: A Systematic Review
No full textIncreased risk of stroke and myocardial infarction in patients with epilepsy: A systematic review of population-based cohort studies
No full textThe objective of the study was to review the current epidemiological evidence about the relationship between epilepsy and increased risk of cardio- and cerebrovascular events
Automatic segmentation of the optic nerve in transorbital ultrasound images using a deep learning approach
Full text linkTransorbital sonography is able to provide
reliable information about (a) intra-cranial pressure estimation
through the optic nerve sheath diameter (ONSD) measurement,
and (b) optic nerve atrophy in patients with multiple sclerosis
through the optic nerve diameter (OND). In this study, we
present the first method for the automatic measurement of the
OND and ONSD using a deep learning technique (UNet with
ResNet50 encoder) for the optic nerve segmentation. The dataset
included 201 images from 50 patients. The automated
measurements were compared with manual ones obtained by
one operator. The mean error was equal to 0.07 ± 0.34 mm and
-0.07 ± 0.67 mm, for the OND and ONSD, respectively. The
developed system should aid in standardizing OND and ONSD
measurements and reduce manual evaluation variability
B-mode transorbital ultrasonography for the diagnosis of idiopathic intracranial hypertension: an updated systematic review and meta-analysis
No full textObjectivesThis systematic review and meta-analysis aimed to evaluate the role of B-mode transorbital ultrasonography (TOS) for the diagnosis of idiopathic intracranial hypertension (IIH) in adults.MethodsMEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials (CENTRAL) (1966-May 2022) were searched to identify studies reporting ultrasonographic data about the optic nerve sheath diameter (ONSD) and optic disc elevation (ODE) in adults with IIH compared to subjects without IIH. The quality of the included studies was evaluated by the Newcastle-Ottawa Quality.ResultsFifteen studies were included (total of 439 patients). The values of ODE ranged from 0.6 to 1.3 mm in patients with IIH. The values of ONSD ranged from 4.7 to 6.8 mm in IIH patients and from 3.9 to 5.7 mm in controls. In IIH patients, the ONSD was significantly higher compared to controls (standardized mean difference: 2.5 mm, 95% confidence interval (CI): 1.6-3.4 mm). Nine studies provided data about the presence of papilledema and the pooled prevalence was 95% (95% CI, 92-97%).ConclusionsIn adults, the thickness of ONSD and the entity of ODE were significantly associated with IIH. B-mode TOS enables to noninvasively detect increased ICP and should be performed, potentially routinely, in any patient with suspected IIH
B-mode transorbital ultrasononography for the diagnosis of acute optic neuritis. A systematic review
No full textOptic nerve sheath diameter: present and future perspectives for neurologists and critical care physicians
No full textEstimation of intracranial pressure (ICP) may be helpful in the management of neurological critically ill patients. It has been shown that ultrasonography of the optic nerve sheath diameter (ONSD) is a reliable tool for non-invasive estimation of increased intracranial pressure (ICP) at hospital admission or in intensive care. Less is known about the estimation of increased ICP and usefulness of ONSD in the prehospital setting. The aim of this review was to elucidate both prevailing and novel applications of ONSD for neurologists and critical care physicians
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