MRI measurement of optic nerve sheath diameter using 3D driven equilibrium sequence as a non-invasive tool for the diagnosis of idiopathic intracranial hypertension

Abdelrahman, Ahmed S.; Barakat, Mai M. K.

doi:10.1186/s43055-020-0149-x

Cited by 6 publications

(3 citation statements)

References 20 publications

(44 reference statements)

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“…Previous studies indicated a strong correlation between increased ONSD and radiologic findings with CT and MRI [ 6 , 9 , 39 , 40 ]. Patients diagnosed with increased ICP by CT or MRI had lower ONSDs on ultrasound (5.67 mm; 95% CI 5.44–5.91 mm and 5.43 mm; 95% CI 5.25–5.61 mm) than patients diagnosed with invasive ICP monitoring (6.04 mm; 95% CI 5.76–6.32 mm).…”

Section: Discussionmentioning

confidence: 98%

Mean value of B-mode optic nerve sheath diameter as an indicator of increased intracranial pressure: a systematic review and meta-analysis

Montorfano

Bordes

et al. 2021

Ultrasound J

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Objectives Timely diagnosis and treatment of increased intracranial pressure can decrease morbidity and prevent mortality. The present meta-analysis aims to determine the mean value of the ONSD measured in patients with various elevated ICP etiologies under different clinical settings, as well as comparing the value of ONSD between patients with and without elevated ICP. Methods This meta-analysis complied with the Preferred Reporting Items for Systematic Reviews and Meta-analysis Statement8. PubMed, Embase, and Cochrane Library were searched to identify ONSD measured by US for patients with increased ICP from establishment to October 2020. Results A total of 779 patients with elevated ICP among 22 studies were included in the present meta-analysis. Studies were published between 2003 and 2020. Eighteen were comparative (18/22, 81.8%), and four were single-armed study (4/22, 18.2%). Twenty were prospective studies (20/22, 90.9%). There was moderate-to-high heterogeneity based on the prediction ellipse area and variance logit of sensitivity and specificity. Conclusions The mean value of the ONSD among patients diagnosed with increased ICP was 5.82 mm (95% CI 5.58–6.06 mm). Variations were observed based on etiology of intracranial hypertension, clinical settings where ONSD was measured, and standards for diagnosing intracranial hypertension. The US-ONSD among patient with elevated ICP was significantly higher than the normal control. Although a cut-off value is not clearly determined, these mean values can be implemented to evaluate the sensitivity and specificity of US-ONSD in diagnosing intracranial hypertension in future studies.

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Section: Discussionmentioning

confidence: 98%

Mean value of B-mode optic nerve sheath diameter as an indicator of increased intracranial pressure: a systematic review and meta-analysis

Montorfano

Bordes

et al. 2021

Ultrasound J

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“…Dalam hal ini, MRI memiliki keunggulan dibandingkan dengan USG dan CT scan, yakni dapat membedakan ukuran saraf optikus dan selubung saraf optikus (gambar 4). 13,16 Tetapi dalam pengukuran selubung saraf optikus, terdapat penelitian yang menyatakan bahwa pengukuran selubung saraf optikus dengan menggunakan USG, CT scan, ataupun MRI memiliki tingkat akurasi yang tidak jauh berbeda. 13,17…”

Section: Gambar 3 Pengukuran Selubung Saraf Optikus Dengan Menggunakunclassified

Laporan Kasus : Septo Optic Dysplasia (de Morsier Syndrome)

Sutrisno¹

2020

J. Kdokt Meditek

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Septo optic dysplasia (SOD) adalah kelainan kongenital yang jarang ditemukan, dengan angka kejadian 1 : 10.000 kelahiran hidup. Karakteristik SOD adalah ditemukannya dua dari tiga kelainan berupa disgenesis septum struktur midline otak, disgenesis saraf optikus, dan disfungsi kelenjar pituitari. Kami melaporkan seorang pasien perempuan berusia 11 tahun datang dengan keluhan mata juling dan gangguan penglihatan. Pada pemeriksaan mata, didapatkan visus mata kanan 1/60 dan mata kiri 6/6. CT scan menunjukan hipoplasia selubung saraf optikus kanan dan agenesis septum pelusidum. Pada pasien tidak terdapat gangguan pertumbuhan ataupun perkembangan serta tidak terdapat gangguan neurologi. Pemeriksaan radiologis memiliki peranan yang penting dalam membantu menegakkan diagnosis SOD karena baik untuk mengevaluasi struktur otak dan saraf optikus

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“…Raised ICP is seen frequently after a severe TBI [1], therefore early identification is critical to ensure timely and appropriate management [7]. To avoid complications of the ventriculostomy, the traditional and gold standard method of measuring ICP, non-invasive methods of estimating ICP are preferred whenever possible and optic nerve sheath diameter (ONSD) is increasingly utilized to indirectly assess ICP using ultrasonography [8], CT scan [9] and MRI [10]. On other hand, fewer studies were published studying the significance of brain CT-derived ONSD in the evaluation and grading of TBI.…”

Section: Introductionmentioning

confidence: 99%

Correlation between Optic Nerve Sheath Diameter and Marshall Scale in Acute Traumatic Brain Injury

Al-Tameemi,

Al-Essawi,

Alyassari

2023

CLINICMED

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Background: Imaging plays integral role in the evaluation of patients with acute traumatic brain injury (TBI), with computerized tomography (CT) being the modality of the choice and the most commonly utilized imaging tool. One of the important determinants of TBI severity is raised intracranial pressure (ICP). Optic nerve sheath diameter (ONSD) was considered as a reliable indirect surrogate for the raised ICP, however, studies assessing role of CT-derived ONSD in evaluation of patients with raised ICP or brain injury are limited. Aim of the study: To assess the correlation between ONSD measured by CT scan and the severity of TBI according to Marshall scale. Patients and methods: A cross-sectional analytic study was conducted on 60 adult patients (52 males, 8 females) presented with acute TBI and referred for brain CT examination. After initial general evaluation of brain CT images, the score of TBI was assessed according to Marshal's scale (I to VI). The transverse ONSD was manually measured on axial CT image at 3 mm distance behind eye globe. The correlation between the grade of TBI and ONSD was subjected to statistical analysis. The study was approved by the Institutional Ethical Review Committee. Results: The means of all, right-sided and left-sided ONSD were 4.695 mm, 4.606 mm and 4.785 mm respectively. There was positive, linear and statistically significant correlation (p value <0.001, r = 0.662) between the mean of ONSD measured by CT scan and Marshall score. When the ONSD measurements of the right and left sides were analyzed separately, the correlation was also significant and positive (r= 0.504 for the right side, r = 0.699 for the left side with p value <0.001 for both). ONSD showed weakly negative and statistically not significant correlation (p value= 0.571, r = - 0.075) with the duration between onset of the trauma and time of CT examination. There was no significant difference between mean ONSD measurements when correlated with the laterality of TBI, age or gender (p values 0.392 0.328 and 0.462 respectively). Conclusion: ONSD measured on brain CT scan is positively correlated with the severity of TBI as assessed by Marshall scale. Because Marshall scale has prognostic implication, ONSD may also have a prognostic value during assessment of patients with TBI.

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MRI measurement of optic nerve sheath diameter using 3D driven equilibrium sequence as a non-invasive tool for the diagnosis of idiopathic intracranial hypertension

Cited by 6 publications

References 20 publications

Mean value of B-mode optic nerve sheath diameter as an indicator of increased intracranial pressure: a systematic review and meta-analysis

Mean value of B-mode optic nerve sheath diameter as an indicator of increased intracranial pressure: a systematic review and meta-analysis

Laporan Kasus : Septo Optic Dysplasia (de Morsier Syndrome)

Correlation between Optic Nerve Sheath Diameter and Marshall Scale in Acute Traumatic Brain Injury

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