Compared to spectral-domain OCT, Stratus-OCT Time-Domain generally has which characteristic?

Compared to spectral-domain OCT, Stratus-OCT Time-Domain generally has which characteristic?

• A. Lower Axial Resolution
• B. No Moving Parts
• C. Higher Axial Resolution
• D. Faster Scanning Speed

Answer: (C)

Axial resolution in OCT is determined by the light source bandwidth—the broader the bandwidth, the finer the resolution in depth. Stratus Time-Domain OCT uses a moving reference mirror and a single detector path, which makes scanning slower and generally yields lower sensitivity compared with spectral-domain OCT. Spectral-domain OCT detects all depths simultaneously with a stationary reference arm and a spectrometer, enabling much faster acquisition and higher sensitivity, while preserving or even improving axial resolution because it can use broader bandwidth light sources. In practical terms, the biggest differences you’ll notice are speed and sensitivity: spectral-domain systems image faster and with less motion-related noise, while axial resolution is largely set by the source bandwidth and is typically similar or better in spectral-domain systems. So the idea you might encounter—that time-domain OCT has higher axial resolution—doesn’t align with how axial resolution is set and with how the two technologies are designed; the practical takeaway is that spectral-domain OCT offers faster scanning and higher sensitivity, with axial resolution being comparable or better due to broader bandwidth usage.

Axial resolution in OCT is determined by the light source bandwidth—the broader the bandwidth, the finer the resolution in depth. Stratus Time-Domain OCT uses a moving reference mirror and a single detector path, which makes scanning slower and generally yields lower sensitivity compared with spectral-domain OCT. Spectral-domain OCT detects all depths simultaneously with a stationary reference arm and a spectrometer, enabling much faster acquisition and higher sensitivity, while preserving or even improving axial resolution because it can use broader bandwidth light sources. In practical terms, the biggest differences you’ll notice are speed and sensitivity: spectral-domain systems image faster and with less motion-related noise, while axial resolution is largely set by the source bandwidth and is typically similar or better in spectral-domain systems. So the idea you might encounter—that time-domain OCT has higher axial resolution—doesn’t align with how axial resolution is set and with how the two technologies are designed; the practical takeaway is that spectral-domain OCT offers faster scanning and higher sensitivity, with axial resolution being comparable or better due to broader bandwidth usage.