Comparison of Three Point-of-Care Ultrasound Views and MRI Measurements for Optic Nerve Sheath Diameter: A Prospective Validity Study

Raval, Ronak; Shen, Jay; Ferguson, Nick; Kelly, Thomas; Daniels, Justin; Dorotta, Ihab; Ramsingh, Davinder

doi:10.1007/s12028-019-00881-7

Cited by 15 publications

(8 citation statements)

References 36 publications

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“…Moreover, even Patterson et al [ 23 ] reported an ONSD agreement in a cohort of intracranial hypertension patients. However, in a more recent paper, Raval et al [ 12 ] did not find significant agreement in transverse, inferior or sagittal US views and MRI in the axial view of ONSD, raising concerns about this association because of different US ocular plane orientation, different image quality and different angle of transection.…”

Section: Discussionmentioning

confidence: 98%

“…In a dedicated study, focusing on children and adolescents, using both MRI and B-mode US, a good reproducibility and repeatability of the ONSD measurement, with a repeatability coefficient between 0.34 and 0.46 mm, was described [ 11 ]. Conversely, other papers have disputed those findings because of a lacking standardized ONSD sonographic methodology [ 12 ]. Our group previously presented a dedicated bundle [ 13 ], based on US mode and the identification of some anatomical landmarks also using color Doppler, to improve the reliability and standardize the ONSD assessment.…”

Section: Introductionmentioning

confidence: 99%

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The CLOSED protocol to assess optic nerve sheath diameter using color-Doppler: a comparison study in a cohort of idiopathic normal pressure hydrocephalus patients

et al. 2022

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Background Sonographic assessment of the optic nerve sheath diameter represents a promising non-invasive technique for estimation of the intracranial pressure. A wide inter-observer variability, along with a lack of a standardized protocol for the optic nerve sheath diameter measurements, could lead to over- or under-estimation. The present study was aimed at evaluating feasibility of color-Doppler for better delineating optic nerve sheath borders, comparing it to B-mode imaging, using the magnetic resonance measurements as a comparison. Methods Optic nerve sheath diameters were evaluated using magnetic resonance by an expert radiologist in a cohort of patients with suspected idiopathic normal pressure hydrocephalus. Magnetic resonance findings were evaluated twice. In the first half of this cohort, optic nerve sheath diameters were measured using B-mode only, in the second half applying color-Doppler. Measurements obtained using these two techniques were compared to magnetic resonance imaging measurements. The Bland–Altman analysis and concordance correlation coefficient were computed to quantify the strength of agreement between the two magnetic resonance assessments. Box plots and average (± SD) were used to compare assessments by sonographic and magnetic resonance methods. Results Fifty patients were included. MRI assessment showed a moderate concordance correlation coefficient. Optic nerve sheath diameters measured applying color-Doppler were lower (p < 0.001) and less scattered compared to B-mode assessment, which approached more to magnetic resonance measurements. Conclusions In this cohort of patients, magnetic resonance showed high intra-rater variability in optic nerve sheath diameter assessments. Optic nerve sheath diameter assessments using color-Doppler yielded lower and less scattered diameters compared to B-mode only.

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Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

The CLOSED protocol to assess optic nerve sheath diameter using color-Doppler: a comparison study in a cohort of idiopathic normal pressure hydrocephalus patients

et al. 2022

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“…This modality is not without its controversies like common artifact interfering with measurements and difficulty in training even experienced providers to identify ONS [ 59 ]. Inferior and transverse ocular scans yield the best images, and despite only moderate correlation with MRI measurements, the relative size can be used as a cursory examination [ 60 ].…”

Section: Trans-ocular Sonography For Elevated Icpmentioning

confidence: 99%

Point-of-Care Ultrasound for the Trauma Anesthesiologist

Heinz

Vincent

2022

Curr Anesthesiol Rep

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Purpose of Review With advances in technology and availability of handheld ultrasound probes, studies are focusing on the perioperative care of patients, but a limited number specifically on trauma patients. This review highlights recent findings from studies using point of care ultrasound (POCUS) to improve the care of trauma patients. Recent Findings Major findings include the use of POCUS to assess volume status of trauma patients upon arrival to measure the major vasculature. Additionally, several studies have advanced the use of POCUS to identify pneumothorax in trauma patients. Finally, the ASA POCUS certification and ASRA expert guidelines are examples of international organizations establishing guidelines for utilization and training of anesthesiologists in the field of POCUS, which will be discussed. Summary Despite the COVID-19 pandemic, and considerable resources being diverted to fight this global healthcare crisis, advances are being made in utilization of POCUS to aid the care of trauma patients.

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“…Some studies have shown that when the eyeball is in the maximum abduction position and the ONSD is reduced by more than 5%, subarachnoid fluid increases (41). Second, the measurement of ONSD requires high-quality ultrasound images (31). When performing ultrasound examination on the same patient, it may appear that high-quality images may be obtained in one view, but not in another view.…”

Section: Ocular Ultrasoundmentioning

confidence: 99%

Non-invasive detection of intracranial pressure related to the optic nerve

Li¹,

Wan²

2021

Quant Imaging Med Surg

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Intracranial pressure (ICP) is associated with a variety of diseases. Early diagnosis and the timely intervention of elevated ICP are effective means to clinically reduce the morbidity and mortality of some diseases. The detection and judgment of reduced ICP are beneficial to glaucoma doctor and neuro ophthalmologist to diagnose optic nerve disease earlier. It is important to evaluate and monitor ICP clinically.Although invasive ICP detection is the gold standard, it can have complications. Most non-invasive ICP tests are related to the optic nerve and surrounding tissues due to their anatomical characteristics. Ultrasound, magnetic resonance imaging, transcranial Doppler, papilledema on optical coherence tomography, visual evoked potential, ophthalmodynamometry, the assessment of spontaneous retinal venous pulsations, and eye-tracking have potential for application. Although none of these methods can completely replace invasive technology; however, its repeatable, low risk, high accuracy, gradually attracted people's attention. This review summarizes the non-invasive ICP detection methods related to the optic nerve and the role of the diagnosis and prognosis of neurological disorders and glaucoma. We discuss the advantages and challenges and predict possible areas of development in the future.

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Comparison of Three Point-of-Care Ultrasound Views and MRI Measurements for Optic Nerve Sheath Diameter: A Prospective Validity Study

Cited by 15 publications

References 36 publications

The CLOSED protocol to assess optic nerve sheath diameter using color-Doppler: a comparison study in a cohort of idiopathic normal pressure hydrocephalus patients

The CLOSED protocol to assess optic nerve sheath diameter using color-Doppler: a comparison study in a cohort of idiopathic normal pressure hydrocephalus patients

Point-of-Care Ultrasound for the Trauma Anesthesiologist

Non-invasive detection of intracranial pressure related to the optic nerve

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