Document Detail

A non-invasive navigation system for retargeting gastroscopic lesions.
MedLine Citation:
PMID:  25226971     Owner:  NLM     Status:  In-Data-Review    
Biopsy is a traditional endoscopic surveillance of premalignant gastric lesions, and endoscopic tattooing is used for marking the biopsy's location. However, the tattooing has several disadvantages. For example, the procedure is an invasive operation and may not be durable due to the diffusion. Moreover, it is procedurally cumbersome with an associated risk of technical failure. In this study, a computer aided endoscopic navigation system (CAEN system) was developed for a non-invasive biopsy procedure. The CAEN system consists of a new, designed six degree of freedom (6-DOF) tracking endoscope device and a computer simulated work station. During the procedure, the endoscopist uses the tip of the tracking endoscope to touch the lesion. Then, the lesion's location is recorded in the work station, which then guides the endoscopist in retargeting the lesions in the follow-ups. The clinical experimental results demonstrate that the accuracy at the angularis is 5.2±2.8 mm, at the antral lesser curvature is 7.2±2.0 mm, at the antral greater curvature is 6.3±3.1 mm, at the antral posterior wall is 8.2±1.6 mm, and at the antral anterior wall is 7.9±1.3 mm. The mean accuracy is 7.5 mm, and the P-value is 0.023, which is likely suitable for clinical practice. Furthermore, the proposed CAEN system requires less procedural time than the tattooing.
Jiquan Liu; Bin Wang; Weiling Hu; Yun Zong; Jianmin Si; Huilong Duan
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Bio-medical materials and engineering     Volume:  24     ISSN:  1878-3619     ISO Abbreviation:  Biomed Mater Eng     Publication Date:  2014 Jan 
Date Detail:
Created Date:  2014-09-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9104021     Medline TA:  Biomed Mater Eng     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  2673-9     Citation Subset:  IM    
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