Table 2 The comparison of properties between the endoscopic wide-field imaging and endomicroscopy

Resolution

Around 100 μm

0.5–20 μm

Field of view

80–140°

Ø0.3–Ø3 mm

Detection target

Macroscopical objects in tissue

Tissue structures in cellular and subcellular scale

Corresponding techniques

Traditional white-light imaging

Narrow-band imaging

Linked color imaging

i-scan

Endocyto

Confocal laser endomicroscopy

Photoacoustic endoscopy

Optical coherent tomography

Coherent anti-Stokes Raman scattering

Multi-photon endomicroscopy