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©2013 Baishideng Publishing Group Co.
World J Gastrointest Endosc. Nov 16, 2013; 5(11): 540-550
Published online Nov 16, 2013. doi: 10.4253/wjge.v5.i11.540
Published online Nov 16, 2013. doi: 10.4253/wjge.v5.i11.540
Table 3 Comparison of different types of optical coherence tomography systems
Parameters | TD-OCT | SD-OCT | SS-OCT/OFDI |
Mechanism | Interference signals are detected as a function of optical time delay between obj. and ref. arm. | Interference signals are detected with a camera as a function of optical frequency | Spectral fringes are mapped to time domain by use of a swept laser and are measured with a detector as a function of time |
Major components | Broadband laser, optical delay line and a detector | Broadband laser, spectrometer and camera | Tunable laser, digitizer and a balanced detector |
Spectrum | 800 nm, 1000 nm, 1300 nm | 800 nm, 1000 nm, 1300 nm | 800 nm, 1000 nm, 1300 nm |
Imaging depth | 1-3 mm | 1-3 mm | 1-3 mm |
Resolution | ≥ 10 μm | 1-10 μm | 1-10 μm |
Imaging speed (axial scan rate) | Slow ( ≤ 5 kHz) | Fast (20-150 kHz) | Fairly fast (20-400 kHz) |
SNR | Low | High | High |
Image quality | Moderate | Fairly high | High |
Sensitivity | Low (70-90 dB) | High (85-105 dB) | High (≥ 100 dB) |
Phase stability | Low | High | Moderate |
Portability | Yes | Yes | Yes |
System cost | Low | High | Moderate |
- Citation: Mahmud MS, May GR, Kamal MM, Khwaja AS, Sun C, Vitkin A, Yang VX. Imaging pancreatobiliary ductal system with optical coherence tomography: A review. World J Gastrointest Endosc 2013; 5(11): 540-550
- URL: https://www.wjgnet.com/1948-5190/full/v5/i11/540.htm
- DOI: https://dx.doi.org/10.4253/wjge.v5.i11.540