The impact of demographics and positioning on the imaging features of the optic nerve sheath and ophthalmic vessels
| Main Author: | |
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| Publication Date: | 2025 |
| Other Authors: | , , , , |
| Format: | Article |
| Language: | eng |
| Source: | Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) |
| Download full: | http://hdl.handle.net/10362/179390 |
Summary: | Publisher Copyright: © The Author(s) 2025. |
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The impact of demographics and positioning on the imaging features of the optic nerve sheath and ophthalmic vesselsCentral retinal arteryDopplerOphthalmic arteryOptic nerve sheathOptic nerve sheath diameterUltrasonographyRadiological and Ultrasound TechnologyRadiology Nuclear Medicine and imagingPublisher Copyright: © The Author(s) 2025.Background: There are significant discrepancies in the optic nerve sheath diameter (ONSD) reported in the literature. We aimed to determine the ultrasonographic imaging features of ONSD and ophthalmic vessels in a healthy population, using a standardized protocol, and to estimate the effect of demographics and positioning changes on imaging measurements. Methods: We measured the mean values of the ONSD in supine and sitting position and the Doppler imaging parameters of the ophthalmic, central retinal and short posterior ciliary arteries. Inter-observer reliability was assessed using intraclass correlation coefficient (ICC). Linear regression models were fitted to predict the effect of demographic and clinical determinants on the imaging features. Results: A total of 50 measurements were obtained for each observer. The mean ONSD was 5.9 mm and there was a mean reduction of 0.2 mm when assessed in sitting position (p < 0.001). Doppler analysis showed higher peak-systolic velocity and resistive index in the ophthalmic artery (35.6 cm/s vs. 12.0 cm/s; 0.78 vs. 0.70) compared to the central retinal artery (p < 0.001). Age, sex, heart rate and systolic blood pressure were significant determinants of the imaging features, with ONSD being larger in males (p < 0.001) and increasing with heart rate (p = 0.001). ICC estimates indicated ‘good’ inter-observer reliability of the ONSD and the ophthalmic and central retinal arteries velocities and resistance. Conclusions: Our findings suggest a significant impact of patient demographics and positioning during ultrasonography on the normal imaging features of the ONSD and ophthalmic vessels. The heterogeneity in methodology and clinical cohorts may justify previous discrepancies in the literature. These findings can assist in the interpretation of imaging features in clinical settings and in the standardization of point of care ONSD ultrasonography.NOVA Medical School|Faculdade de Ciências Médicas (NMS|FCM)RUNBerhanu, DavidAbegão Pinto, LuísCarneiro, InêsFragata, IsabelTavares Ferreira, JoanaLucas Neto, Lia2025-02-19T21:22:37Z20252025-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/179390eng2524-8987PURE: 110683213https://doi.org/10.1186/s13089-025-00403-xinfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-02-24T01:50:42Zoai:run.unl.pt:10362/179390Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T20:40:16.820779Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse |
| dc.title.none.fl_str_mv |
The impact of demographics and positioning on the imaging features of the optic nerve sheath and ophthalmic vessels |
| title |
The impact of demographics and positioning on the imaging features of the optic nerve sheath and ophthalmic vessels |
| spellingShingle |
The impact of demographics and positioning on the imaging features of the optic nerve sheath and ophthalmic vessels Berhanu, David Central retinal artery Doppler Ophthalmic artery Optic nerve sheath Optic nerve sheath diameter Ultrasonography Radiological and Ultrasound Technology Radiology Nuclear Medicine and imaging |
| title_short |
The impact of demographics and positioning on the imaging features of the optic nerve sheath and ophthalmic vessels |
| title_full |
The impact of demographics and positioning on the imaging features of the optic nerve sheath and ophthalmic vessels |
| title_fullStr |
The impact of demographics and positioning on the imaging features of the optic nerve sheath and ophthalmic vessels |
| title_full_unstemmed |
The impact of demographics and positioning on the imaging features of the optic nerve sheath and ophthalmic vessels |
| title_sort |
The impact of demographics and positioning on the imaging features of the optic nerve sheath and ophthalmic vessels |
| author |
Berhanu, David |
| author_facet |
Berhanu, David Abegão Pinto, Luís Carneiro, Inês Fragata, Isabel Tavares Ferreira, Joana Lucas Neto, Lia |
| author_role |
author |
| author2 |
Abegão Pinto, Luís Carneiro, Inês Fragata, Isabel Tavares Ferreira, Joana Lucas Neto, Lia |
| author2_role |
author author author author author |
| dc.contributor.none.fl_str_mv |
NOVA Medical School|Faculdade de Ciências Médicas (NMS|FCM) RUN |
| dc.contributor.author.fl_str_mv |
Berhanu, David Abegão Pinto, Luís Carneiro, Inês Fragata, Isabel Tavares Ferreira, Joana Lucas Neto, Lia |
| dc.subject.por.fl_str_mv |
Central retinal artery Doppler Ophthalmic artery Optic nerve sheath Optic nerve sheath diameter Ultrasonography Radiological and Ultrasound Technology Radiology Nuclear Medicine and imaging |
| topic |
Central retinal artery Doppler Ophthalmic artery Optic nerve sheath Optic nerve sheath diameter Ultrasonography Radiological and Ultrasound Technology Radiology Nuclear Medicine and imaging |
| description |
Publisher Copyright: © The Author(s) 2025. |
| publishDate |
2025 |
| dc.date.none.fl_str_mv |
2025-02-19T21:22:37Z 2025 2025-01-01T00:00:00Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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article |
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publishedVersion |
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http://hdl.handle.net/10362/179390 |
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http://hdl.handle.net/10362/179390 |
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eng |
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eng |
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2524-8987 PURE: 110683213 https://doi.org/10.1186/s13089-025-00403-x |
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info:eu-repo/semantics/openAccess |
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