Title :
Path-loss estimation of wireless channels in capsule endoscopy from X-ray CT images
Author :
Takizawa, Kenichi ; Hagiwara, Hiroaki ; Hamaguchi, Kiyoshi
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol. (NICT), Yokosuka, Japan
fDate :
Aug. 30 2011-Sept. 3 2011
Abstract :
The paper describes an estimation method of path-loss for capsule endoscopy using wireless communications to send images from digestive tract. This method is based on the use of a set of X-ray computer tomography (CT) images of the patient. In order to evaluate this method, we conducted a measurement of received signal strength (RSS) by introducing a signal generator (SG) in esophagus and duodenum of a participant. As a result of comparisons, the method provides estimates on path-loss for the participant with estimation errors of less than 6 dB in 75% measurement positions.
Keywords :
biological organs; computerised tomography; endoscopes; medical image processing; signal generators; wireless channels; X-ray CT images; X-ray computer tomography images; capsule endoscopy; digestive tract; duodenum; esophagus; path-loss estimation; received signal strength; signal generator; wireless channel; wireless communication; Antenna measurements; Atmospheric measurements; Computed tomography; Estimation; Particle measurements; Wireless communication; X-ray imaging; Capsule Endoscopes; Duodenum; Equipment Design; Equipment Failure Analysis; Esophagus; Radiographic Image Interpretation, Computer-Assisted; Reproducibility of Results; Sensitivity and Specificity; Telemetry; Tomography, X-Ray Computed;
Conference_Titel :
Engineering in Medicine and Biology Society, EMBC, 2011 Annual International Conference of the IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-4121-1
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2011.6090425
