Accuracy of the heidelberg spectralis in the alignment between near-infrared image and tomographic scan in a model eye: A multicenter study

Giulio Barteselli, Dirk Uwe Bartsch, Francesco Viola, Francesca Mojana, Marco Pellegrini, Kathrin I. Hartmann, Eleonora Benatti, Simon Leicht, Roberto Ratiglia, Giovanni Staurenghi, Robert N. Weinreb, William R. Freeman

Research output: Contribution to journalArticle

Abstract

Purpose: To evaluate temporal changes and predictors of accuracy in the alignment between simultaneous near-infrared image and optical coherence tomography (OCT) scan on the Heidelberg Spectralis using a model eye. Design: Laboratory investigation. Methods: After calibrating the device, 6 sites performed weekly testing of the alignment for 12 weeks using a model eye. The maximum error was compared with multiple variables to evaluate predictors of inaccurate alignment. Variables included the number of weekly scanned patients, total number of OCT scans and B-scans performed, room temperature and its variation, and working time of the scanning laser. A 4-week extension study was subsequently performed to analyze short-term changes in the alignment. Results: The average maximum error in the alignment was 15 ± 6 μm; the greatest error was 35 μm. The error increased significantly at week 1 (P =.01), specifically after the second imaging study (P

Original languageEnglish
Pages (from-to)588-592
Number of pages5
JournalAmerican Journal of Ophthalmology
Volume156
Issue number3
DOIs
Publication statusPublished - Sep 2013

ASJC Scopus subject areas

  • Ophthalmology

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    Barteselli, G., Bartsch, D. U., Viola, F., Mojana, F., Pellegrini, M., Hartmann, K. I., Benatti, E., Leicht, S., Ratiglia, R., Staurenghi, G., Weinreb, R. N., & Freeman, W. R. (2013). Accuracy of the heidelberg spectralis in the alignment between near-infrared image and tomographic scan in a model eye: A multicenter study. American Journal of Ophthalmology, 156(3), 588-592. https://doi.org/10.1016/j.ajo.2013.04.030