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Toward optical guidance during endoscopic ultrasound-guided fine needle aspirations of pancreatic masses using single fiber reflectance spectroscopy: a feasibility study.

Abstract：

:Endoscopic ultrasound-guided fine needle aspirations (EUS-FNA) of pancreatic masses suffer from sample errors and low-negative predictive values. Fiber-optic spectroscopy in the visible to near-infrared wavelength spectrum can noninvasively extract physiological parameters from tissue and has the potential to guide the sampling process and reduce sample errors. We assessed the feasibility of single fiber (SF) reflectance spectroscopy measurements during EUS-FNA of pancreatic masses and its ability to distinguish benign from malignant pancreatic tissue. A single optical fiber was placed inside a 19-gauge biopsy needle during EUS-FNA and at least three reflectance measurements were taken prior to FNA. Spectroscopy measurements did not cause any related adverse events and prolonged procedure time with ? 5 ?? min . An accurate correlation between spectroscopy measurements and cytology could be made in nine patients (three benign and six malignant). The oxygen saturation and bilirubin concentration were significantly higher in benign tissue compared with malignant tissue (55% versus 21%, p = 0.038 ; 166 ?? ? mol / L versus 17 ?? ? mol / L , p = 0.039 , respectively). To conclude, incorporation of SF spectroscopy during EUS-FNA was feasible, safe, and relatively quick to perform. The optical properties of benign and malignant pancreatic tissue are different, implying that SF spectroscopy can potentially guide the FNA sampling.

journal_name

J Biomed Opt

journal_title

Journal of biomedical optics

authors

Stegehuis PL,Boogerd LS,Inderson A,Veenendaal RA,van Gerven P,Bonsing BA,Sven Mieog J,Amelink A,Veselic M,Morreau H,van de Velde CJ,Lelieveldt BP,Dijkstra J,Robinson DJ,Vahrmeijer AL

doi

10.1117/1.JBO.22.2.024001

subject

Has Abstract

pub_date

2017-02-01 00:00:00

pages

24001

issue

2

eissn

1083-3668

issn

1560-2281

pii

2601697

journal_volume

22

pub_type

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