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Radial versus raster spectral-domain optical coherence tomography scan patterns for detection of macular fluid in neovascular age-related macular degeneration
  1. Murtaza K Adam,
  2. Nadim Rayess,
  3. Ehsan Rahimy,
  4. Joseph I Maguire,
  5. Jason Hsu
  1. Retina Service of Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
  1. Correspondence to Dr Murtaza K Adam, Mid Atlantic Retina, The Retina Service of Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA 19107, USA; murtaza.adam{at}gmail.com

Abstract

Background/aims To compare the 12-line radial to the 25-line raster spectral-domain optical coherence tomography (SD-OCT) acquisition patterns at detecting intraretinal or subretinal fluid in eyes with neovascular age-related macular degeneration (AMD).

Methods Retrospective cross-sectional analysis of 200 eyes with neovascular AMD. Sequential 12-line radial and 25-line raster scans were evaluated for the presence of intraretinal/subretinal fluid.

Results A total of 394 SD-OCT scans were interpreted (1.97 scans per eye). The 12-line radial detected intraretinal/subretinal fluid in all but 7 of 394 scans (1.7%; 95% CI 0.7% to 3.6%), resulting in a sensitivity of 98.3%. The 25-line raster detected intraretinal/subretinal fluid in all but 10 of 394 scans (2.5%; 95% CI 1.2% to 4.6%), resulting in a sensitivity of 97.5%. This small difference in fluid detection between the two acquisition patterns for neovascular AMD was not found to be statistically significant (p=0.6276).

Conclusions The 12-line radial scan is statistically comparable with the 25-line raster scan in detecting the presence of intraretinal/subretinal fluid in neovascular AMD. The 12-line radial SD-OCT pattern alone may be adequate to guide day-to-day clinical decisions in a more time-efficient manner.

  • Macula
  • Retina
  • Imaging
  • Diagnostic tests/Investigation

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