Quantitative imaging of retinal pigment epithelial detachments using spectral-domain optical coherence tomography.
OBJECTIVE
To evaluate the reproducibility of area and volume measurements of retinal pigment epithelium detachments (PEDs) in eyes of patients with age-related macular degeneration using spectral-domain optical coherence tomography imaging and a novel automated, quantitative algorithm.


METHODS
Prospective study to evaluate a diagnostic technology.


METHODS
Patients with PEDs associated with age-related macular degeneration underwent spectral-domain optical coherence tomography imaging. Each eye was imaged 5 times, and each scan consisted of a raster pattern comprising 40 000 uniformly spaced A-scans organized as a 200 × 200 A-scan array. Each raster scan covered a retinal area of 6 × 6 mm encompassing the entire PED. A novel algorithm was used to create PED maps that permitted both qualitative and quantitative assessment of PED area and volume. Test-retest standard deviations of PED area and volume measurements were calculated for each eye.


RESULTS
Sixty-three eyes of 58 patients were enrolled in this study. The qualitative appearance and the quantitative measurements of PED area and volume were highly reproducible over the 5 different datasets obtained from each eye. The intraclass correlation coefficient was more than 0.99 for both area and volume measurements obtained using the entire dataset.


CONCLUSIONS
A novel algorithm for the qualitative and quantitative assessment of PEDs imaged using spectral-domain optical coherence tomography was shown to be highly reproducible. The ability to measure PED area and volume reliably represents a novel strategy for following disease progression, especially when assessing the response of vascularized PEDs to antiangiogenic therapy.
Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Florida, USA.
Fernando M
FM
Penha
Philip J
PJ
Rosenfeld
Giovanni
G
Gregori
Manuel
M
Falcão
Zohar
Z
Yehoshua
Fenghua
F
Wang
William J
WJ
Feuer
D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D004396:Coloring Agents; D005260:Female; D005451:Fluorescein Angiography; D006801:Humans; D007208:Indocyanine Green; D008268:Macular Degeneration / Q000150:complications; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D015203:Reproducibility of Results; D012163:Retinal Detachment / Q000175:diagnosis* / Q000209:etiology; D055213:Retinal Pigment Epithelium / Q000473:pathology*; D041623:Tomography, Optical Coherence
D004396:Coloring Agents; D007208:Indocyanine Green