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a
b
c
d
e
f
g
h
Figure 1 (a,b,c,d,e,f,g,h). Samples
of images of the small bowel
acquired by the capsule endoscope
from the in vivo studies. a,b show
gastric folds in the body of the
stomach, c,d show the villous
pattern of the small bowel
enchanced by the presence of a
little water and air bubble in the
lumen, e,f are airless images of
normal jejunum viewed with the
lumen closed in front of the optical
dome of the capsule, g and h are
views of the terminal ileum.
Capsule
Wireless link
Recorder and
antennae
Wired link
Workstation
Figure 2. Design of the capsule
endoscope system: Video
capsule, Receiver & Recorder,
Workstation.
CAPSULE
Optics and
RECORDER
WORK
STATION
Data storage
Illumination
CPU
Imager
Transmitter
Antenna
Digital
processing
PC
Software
Display
Receiver
Antennae array
Figure 3. Block diagram of the capsule endoscope
system. In the first stage the capsule acquires the
images. The object is illuminated by the LED
illumination system, and the image is projected on the
imager by an optical system. The image is then
transmitted outside the body by means of the
transmitter and antenna. In the second stage
antennae array and the receiver collect the transmitted
signal. The received data is subsequently processed
and stored in the data storage by CPU. In the third
stage the date is retrieved from the recorder and
transferred to the Workstation for additional
processing and presentation on the display.
a
b
c
d
e
f
g
h
i
Figure 4.
a,b - epiglottis. c,d - esophagus.
e - stomach, gastric folds.
f - intestine. g,h - caecum.
i - large intestine, no preparation was
performed - content of large intestine is visible.