Table 1 Description of en face and cross-sectional O2E features for classifying different BE mucosal types, mean ± s.d

From: Tethered optoacoustic and optical coherence tomography capsule endoscopy for label-free assessment of Barrett’s oesophageal neoplasia

Mucosal type

En face features

Cross-sectional features

EP inhomogeneity (a.u.)

Tumour vascular pattern

Mucosa stratification can be seen in OCT images

Glands exist within EP

Transparent glands exist in OCT images

OCT penetration (µm)

Vascular depths in OPAM (µm)

NSM

0.098 ± 0.02

No

Yes

No

No

726 ± 43

534 ± 114

GM

0.14 ± 0.04

No

No

No

No

316 ± 35

328 ± 87

IM

0.15 ± 0.02

No

Likely (in 75% ROIs)

Yes

No (mean transparency 69% (a.u.))

599 ± 29

264 ± 59

D

0.19 ± 0.08

No

Possibly (in 26% ROIs)

Yes

Yes (mean transparency 85% (a.u.))

584 ± 27

284 ± 92

IMC

0.14 ± 0.02

Yes

No

No

No

346 ± 24

276 ± 35

  1. a.u., arbitrary unit; D, dysplasia; EP, epithelium; GM, gastric metaplasia; IM, intestinal metaplasia; IMC, intramucosal cancer; NSM, normal squamous mucosa.