Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/5356
Título: Visual function assessment in medical imaging research
Autor: Lança, Carla Costa
Thompson, John D.
Lança, Luís
Hogg, Peter
Palavras-chave: Ophthalmology
Visual function
Medical imaging
Visual acuity
Contrast sensitivity
Binocular visual acuity
Data: Nov-2015
Editora: American Society of Radiologic Technologists
Citação: Lança C, Thompson JD, Lança L, Hogg P. Visual function assessment in medical imaging research. Radiol Technol. 2015;87(2):129-38.
Resumo: Background - Medical image perception research relies on visual data to study the diagnostic relationship between observers and medical images. A consistent method to assess visual function for participants in medical imaging research has not been developed and represents a significant gap in existing research. Methods - Three visual assessment factors appropriate to observer studies were identified: visual acuity, contrast sensitivity, and stereopsis. A test was designed for each, and 30 radiography observers (mean age 31.6 years) participated in each test. Results - Mean binocular visual acuity for distance was 20/14 for all observers. The difference between observers who did and did not use corrective lenses was not statistically significant (P = .12). All subjects had a normal value for near visual acuity and stereoacuity. Contrast sensitivity was better than population norms. Conclusion - All observers had normal visual function and could participate in medical imaging visual analysis studies. Protocols of evaluation and populations norms are provided. Further studies are necessary to understand fully the relationship between visual performance on tests and diagnostic accuracy in practice.
Peer review: yes
URI: http://hdl.handle.net/10400.21/5356
Versão do Editor: http://www.radiologictechnology.org/content/87/2/129.abstract
Aparece nas colecções:ESTeSL - Artigos

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