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Results: 7

1.
Figure 1

Figure 1. From: Comprehensive esophageal microscopy by using optical frequency-domain imaging (with video).

The OFDI system schematic.

Benjamin J. Vakoc, et al. Gastrointest Endosc. ;65(6):898-905.
2.
Figure 2

Figure 2. From: Comprehensive esophageal microscopy by using optical frequency-domain imaging (with video).

The imaging catheter and balloon centration mechanism is shown. A, The limited field of view of the conventional catheter. B, The use of a balloon-centering catheter that allows full circumferential imaging overcomes the limited field of view of conventional catheter. C, The balloon catheter is shown schematically.

Benjamin J. Vakoc, et al. Gastrointest Endosc. ;65(6):898-905.
3.
Figure 6

Figure 6. From: Comprehensive esophageal microscopy by using optical frequency-domain imaging (with video).

A, A comprehensive vascular map derived from the structural image set. B to D, Cross-sectional images at the indicated locations. Arrows indicate corresponding vessels in the vascular map and cross-sectional images.

Benjamin J. Vakoc, et al. Gastrointest Endosc. ;65(6):898-905.
4.
Figure 7

Figure 7. From: Comprehensive esophageal microscopy by using optical frequency-domain imaging (with video).

A vascular map, including Doppler signal processing. A, The Doppler signal magnitude is displayed by using the indicated color lookup table and overlaid on a structural image. B and C, Cross-sectional images from locations designated in (A).

Benjamin J. Vakoc, et al. Gastrointest Endosc. ;65(6):898-905.
5.
Figure 4

Figure 4. From: Comprehensive esophageal microscopy by using optical frequency-domain imaging (with video).

A, A transverse cross-sectional image showing all architectural layers of the squamous mucosa, including the epithelium (e), lamina propria (lp), muscularis mucosa (mm), submucosa (sm), and muscularis propria (mp); because of the large change in esophageal circumference during imaging (56 mm) and after resection (~22 mm), the cross-sectional image is displayed over a proportionately larger width. B, Representative histology from the same swine (H&E, orig. mag. ×2).

Benjamin J. Vakoc, et al. Gastrointest Endosc. ;65(6):898-905.
6.
Figure 5

Figure 5. From: Comprehensive esophageal microscopy by using optical frequency-domain imaging (with video).

Imaging of the SCJ. A, Three-dimensional renderings of the SCJ are shown, with planes designating locations of the cross-sectional images. B and C, Unwrapped transverse cross-sectional images spanning 360°. D, Representative histology of (E) (H&E, orig. mag. ×2). E, A longitudinal cross-sectional image; the depth of the muscularis mucosa is observed to vary significantly at the transformation zone (black arrows); residual motion artifacts are indicated by the white arrow. A supplementary video representing a full-volume pull-back sequence is available at www.giejournal.org.

Benjamin J. Vakoc, et al. Gastrointest Endosc. ;65(6):898-905.
7.
Figure 3

Figure 3. From: Comprehensive esophageal microscopy by using optical frequency-domain imaging (with video).

OFDI images of the distal esophagus. The esophageal circumference in all figures is given by the balloon circumference (56 mm). A, Three-dimensional renderings of the distal esophagus with quadrant cut-outs and planes designating the locations of the cross-sectional images. B, A trans-verse cross-sectional image; the balloon appears as the inner surface and is clearly apparent in the lower portion of the image where an air/mucus pocket separates the balloon and luminal wall; the radial depth scale is given by the indicated scale bar. The images in (A) and (B) are presented with distorted dimensions to allow for greater visualization of detail. C, A longitudinal cross-sectional image is shown (arrows designating residual motion artifacts); note that the 3-dimensional images use an inverted reflectivity mapping (white corresponds to higher reflectivities) to improve visualization.

Benjamin J. Vakoc, et al. Gastrointest Endosc. ;65(6):898-905.

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