Correlation of optic nerve sheath diameter measurements by computed tomography and magnetic resonance imaging

Kalantari, Hossein; Jaiswal, Rajnish; Bruck, Isaac; Matari, Hussein; Ghobadi, Farzaneh; Weedon, Jeremy; Hassen, Getaw Worku

doi:10.1016/j.ajem.2013.07.028

Cited by 59 publications

(38 citation statements)

References 21 publications

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“…and ) . Findings on computed tomography (CT), such as bony scalloping, widening of the optic canal, and skull base dehiscence (both anterior and lateral), may also be suggestive but lack sensitivity and specificity …”

Section: Diagnosismentioning

confidence: 99%

“…53 Findings on computed tomography (CT), such as bony scalloping, widening of the optic canal, and skull base dehiscence (both anterior and lateral), may also be suggestive but lack sensitivity and specificity. 53,57 THE MULTIDISCIPLINARY TEAM Following diagnosis, optimal management of IIH requires multidisciplinary input from at least an ophthalmologist and neurologist. Neurosurgeons, otolaryngologists, bariatric surgeons, nutritionists, and sleep specialists may also play significant roles.…”

Section: The Modified Dandy Criteriamentioning

confidence: 99%

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Idiopathic intracranial hypertension: Contemporary review and implications for the otolaryngologist

et al. 2017

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Objectives: 1) Review controversies pertaining to the pathophysiology, diagnosis, and treatment of idiopathic intracranial hypertension. 2) Discuss the evolving role of otolaryngologists in managing this disease and related disorders.Data Sources: Primary literature review, Centers for Disease Control and Prevention website, International Classification of Headache Disorders, Second Edition.Methods: A comprehensive review of the primary literature was performed from 1990 to 2016 utilizing keywords idiopathic intracranial hypertension, pseudotumor cerebri, benign intracranial hypertension, spontaneous cerebrospinal fluid leak, and encephalocele. Articles were included at the discretion of the authors based on novel and/or historical contributions to the literature.Results: The incidence of idiopathic intracranial hypertension is increasing along with the obesity epidemic. Undiagnosed patients may present to otolaryngologists with pulsatile tinnitus, dizziness, sleep apnea, and spontaneous cerebrospinal fluid leaks. Although diagnosis is predicated upon imaging findings and lumbar puncture, radiographic signs including empty sella, optic nerve dilation, and globe flattening may suggest the diagnosis. The most effective intervention is weight loss combined with acetazolamide. Surgery is reserved for severe or refractory symptoms and can be highly morbid. Otolaryngologists are increasingly responsible for managing a number of secondary disorders including cerebrospinal fluid rhinorrhea and otorrhea. Failure to manage intracranial hypertension may lead to adverse surgical outcomes.Conclusions: The knowledge base for idiopathic intracranial hypertension has greatly expanded over the past 25 years. This disease is associated with a number of conditions directly relevant to otolaryngologists. A keen understanding of this disorder and its management may optimize outcomes in a growing number of patients.

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Section: Diagnosismentioning

confidence: 99%

Section: The Modified Dandy Criteriamentioning

confidence: 99%

Idiopathic intracranial hypertension: Contemporary review and implications for the otolaryngologist

et al. 2017

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“…Measuring the optic nerve sheath diameter (ONSD) in the cranial computed tomography and magnetic resonance imagining sections were found to correlate well with the invasively measured ICP levels in previous studies [3,4]. However, it is obvious that these modalities are not suitable for continuous monitoring of critically ill patients and may not be available in emergency settings.…”

Section: Introductionmentioning

confidence: 81%

Assessment of intra‐interobserver reliability of the sonographic optic nerve sheath diameter measurement

Öztürk

Demır

Yorulmaz

et al. 2015

The Kaohsiung J of Med Scie

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Diagnosis and measuring the level of increase in intracranial pressure (ICP) is critical, especially for the management of trauma patients in the emergency department and intensive care unit. However, measurements are operator-dependent as in all of the sonographic diagnoses. The aim of this study is to assess the operator variations in the measurement of optic nerve sheath diameter (ONSD). There were four emergency medicine specialists involved in the study. Each had at least 1 year of experience of ultrasound scans and performed at least 25 prior ocular scans examining the ONSD. Two measurements were made 1 week apart from both axial and longitudinal planes. Sixty healthy adults were involved in the study and every investigator obtained four measurements from each. Intra-interobserver reliabilities were tested. The investigators performed 60 ocular ultrasounds on individual healthy adults and obtained two measurements in axial and longitudinal planes 1 week apart. Therefore, 960 measurements were analyzed. The levels of compatibilities for most of the measurements were found at acceptable levels statistically. However, it is not possible to say that there was a perfect compatibility among the sonographers according to the previously conducted reliability studies of ultrasound measurements. According to our results, it is hard to say that sonographic measurement of the ONSD is a highly reliable method both in longitudinal and transverse planes.

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“…Geeraerts et al demonstrated a positive correlation between MRI-derived ONSD and invasively measured ICP (r = 0.71), and using a 5.82 mm cutoff, they determined that the ability of ONSD to detect ICP > 20 mmHg was excellent with AUC = 0.94 and NPV of 92 % [30,31]. Interestingly, a comparison of CT to MRI concluded that the two modalities produce comparable measurements of ONSD [32].…”

Section: Magnetic Resonance Imaging (Mri)mentioning

confidence: 99%

“…Skau et al[68] ▪ Comparison to ICP measured via lumbar puncture (LP)Kalantari et al[32] ▪ No comparison to invasively measured ICP ▪ ONSD measured by CT and ONSD measured by MRI correlate strongly with r = 0.8941Ocular ultrasound vs. CTOhle et al[108] ▪ No comparison to invasively measured ICP ▪ Meta-analysis with 12 studies ▪ ONSD determined by ocular ultrasound is 95.6 % sensitive and 92.3 % specific for CT findings suggestive of increased ICP (ex. shift, collapse of ventricles, intracranial bleeding of greater than 2 mm) ▪ ONSD cutoff values:Ragauskas et al[73] ▪ Comparison to ICP measured via lumbar puncture (LP) ▪ Elevated ICP defined as ICP > 14.7 mmHg…”

mentioning

confidence: 99%

Noninvasive methods of detecting increased intracranial pressure

Gerety

Alemán

et al. 2016

Childs Nerv Syst

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The detection of elevated intracranial pressure (ICP) is of paramount importance in the diagnosis and management of a number of neurologic pathologies. The current gold standard is the use of intraventricular or intraparenchymal catheters; however, this is invasive, expensive, and requires anesthesia. On the other hand, diagnosing intracranial hypertension based on clinical symptoms such as headaches, vomiting, and visual changes lacks sensitivity. As such, there exists a need for a noninvasive yet accurate and reliable method for detecting elevated ICP. In this review, we aim to cover both structural modalities such as computed tomography (CT), magnetic resonance imaging (MRI), ocular ultrasound, fundoscopy, and optical coherence tomography (OCT) as well as functional modalities such as transcranial Doppler ultrasound (TCD), visual evoked potentials (VEPs), and near-infrared spectroscopy (NIRS).

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Correlation of optic nerve sheath diameter measurements by computed tomography and magnetic resonance imaging

Cited by 59 publications

References 21 publications

Idiopathic intracranial hypertension: Contemporary review and implications for the otolaryngologist

Idiopathic intracranial hypertension: Contemporary review and implications for the otolaryngologist

Assessment of intra‐interobserver reliability of the sonographic optic nerve sheath diameter measurement

Noninvasive methods of detecting increased intracranial pressure

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