|Max. frame rate, fps||20||∼200|
|Max. pullback speed, mm/s||3||20|
|Scan diameter (FOV), mm||6.8||∼6–11|
|Axial resolution, µm||15||10–15|
|Lateral resolution, µm||90||20–40|
|Tissue penetration, mm||1.5–3||2–3.5|
|Balloon occlusion||Highly recommended||Optional|
|Catheter size, mm||0.48||0.8–1.0|
FD-OCT = frequency or Fourier-domain optical coherence tomography; FOV = field of view; TD-OCT = time-domain optical coherence tomography.
↵⁎ Values are approximate; TD-OCT specifications refer to the Lightlab time-domain optical coherence tomography (TD-OCT) system (M2/M3).