Results 261 to 270 of about 17,478 (303)

Optic nerve sheath diameter in normal-tension glaucoma patients

British Journal of Ophthalmology, 2011
To report on the optic nerve sheath diameter (ONSD) in patients with normal-tension glaucoma (NTG) compared with controls without known optic nerve (ON) or intracranial disease.In 18 patients with NTG (mean age 64.9 ± 8.9 years; 7 women and 11 men), CT of the orbit was performed.
Jaggi, G P, Miller, N R, Flammer, J, Weinreb, R N, Remonda, L, Killer, H E   +5 more
openaire   +2 more sources

Ultrasound Nomograms of the Fetal Optic Nerve Sheath Diameter

Ultraschall in der Medizin - European Journal of Ultrasound, 2018
Abstract Objective To construct prenatal age-specific reference intervals for sonographic measurements of the optic nerve sheath diameter (ONSD) during gestation in normal fetuses. Materials and Methods Prospective cross-sectional study of fetuses assessed in antenatal ultrasound units between 2010 and 2014.
Karina Krajden, Haratz, Yaakov, Melcer, Zvi, Leibovitz, Hagit, Feit, Tally, Lerman-Sagie, Dorit, Lev, Shimon, Ginath, Liat, Gindes, Antonio Fernandes, Moron, Gustavo, Malinger   +9 more
openaire   +3 more sources

Evaluation of postictal optic nerve sheath diameter at epileptic patients

Epilepsy & Behavior, 2023
During a seizure, metabolic rate and, consequently, cerebral blood flow increase to provide the required maintenance energy. It is thought that this causes an increase in intracranial pressure, but there is no comprehensive research on this subject. In this study, we aimed to measure and follow optic nerve sheath diameter (ONSD) in patients who applied
Rabia, Handan Günsay, Gülşah, Çıkrıkçı Işık, Meral, Yıldırım, Özcan, Gökçek, Osman, Korucu, Yunsur, Çevik   +5 more
openaire   +2 more sources

Real time optic nerve sheath diameter measurement during lumbar puncture

The American Journal of Emergency Medicine, 2018
Measurement of optic nerve sheath diameter (ONSD) using point of care ultrasound has been used to indirectly assess the intracranial pressure (ICP) particularly in conditions where it is raised. Direct pressure measurements using probes reaching the ventricle system correlated with ONSD using ultrasound.
Getaw Worku, Hassen, Mohammed, Al-Juboori, Barbara, Koppel, Gokhan, Akfirat, Hossein, Kalantari   +4 more
openaire   +2 more sources

Ultrasonographic Optic Nerve Sheath Diameter Technical Pitfalls and Imaging Artifacts

Journal of Ultrasound in Medicine
Ultrasonographic optic nerve sheath diameter (ONSD) is a non‐invasive intracranial pressure (ICP) surrogate. This article discusses the effect of ultrasound settings and imaging artifacts on ONSD assessment. Ultrasound settings that may affect ONSD assessment include gain, dynamic range, frequency, harmonic imaging, and focal zones.
Mohammad I. Hirzallah, Aarti Sarwal, Aaron M. Dentinger, Chiara Robba, Jurgita Valaikienė, Piergiorgio Lochner, Felix Schlachetzki, David M. Mills, Michael Ertl, Ryan Hakimi, Shreya Bhise, Jakob Pansell   +11 more
openaire   +2 more sources

Ultrasound assessment of optic nerve sheath diameter in healthy volunteers

Journal of Critical Care, 2016
Ultrasound assessment of optic nerve sheath diameter (ONSD) has been suggested as a non-invasive measure of intracranial pressure. Numerous small studies suggest its validity; however, discrepancy exists around normal values for ONSD. In this study we sought to define a normal value range for ONSD in a population of healthy adult volunteers.ONSD was ...
Patrick Goeres, Frederick A. Zeiler, Bertram Unger, Dimitrios Karakitsos, Lawrence M. Gillman   +4 more
openaire   +2 more sources

Optic nerve sheath diameter does not change with patient position

The American Journal of Emergency Medicine, 2005
Optic nerve sheath diameter (ONSD) has been proposed as a marker for increased intracranial pressure. Trendelenburg's position is often used in hypotensive patients and reverse Trendelenburg's position (30 degrees head up) is often used in head injury patients.
Lisa, Romagnuolo, Vivek, Tayal, Christian, Tomaszewski, Timothy, Saunders, H James, Norton   +4 more
openaire   +2 more sources

Automated Optic Nerve Sheath Diameter Measurement Using Super-pixel Analysis

2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2019
The optic nerve is a part of the central nervous system surrounded by cerebrospinal fluid and is encased in a sheath. Changes to the cerebrospinal fluid due to injury, tumor rupture and so on can increase intracranial pressure (ICP) and can result in changes in the sheath diameter.
Reza, Soroushmehr, Krishna, Rajajee, Craig, Williamson, Jonathan, Gryak, Kayvan, Najarian, Kevin, Ward, Mohamad H, Tiba   +6 more
openaire   +2 more sources

Optic Nerve Sheath Diameter for Preterm Infants: A Pilot Study

Neonatology, 2019
<b><i>Objective:</i></b> In preterm infants, early diagnosis and management of a raised intracranial pressure (ICP) may be important to improve neurodevelopmental outcomes. While invasive ICP monitoring is not recommended, ultrasonography of the optic nerve sheath diameter (ONSD) could provide a ...
Sarah, Ardell, Sibasis, Daspal, Tanya, Holt, Gregory, Hansen   +3 more
openaire   +2 more sources

Sonography of the Optic Nerve Sheath Diameter

Journal of Ultrasound in Medicine, 2017
De Bernardo, Maddalena, Marotta, Giuseppe, Rosa, Nicola   +2 more
openaire   +2 more sources