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Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Near-infrared fluorescence cholangiopancreatoscopy: Initial clinical feasibility results.
Gastrointest. Endosc. 79, 664–668 (2014)
BACKGROUND: The recent clinical propagation of targeted fluorescence agents brings a promising alternative in endoscopy by complementing visual disease detection with molecular biomarkers. OBJECTIVE: Development of near-infrared (NIR) fluorescence cholangiopancreatoscopy in real-time and validation of its clinical use. DESIGN: Feasibility study. SETTING: Tertiary referral center at a large university hospital. PATIENTS: Patients with pancreatic and biliary diseases. INTERVENTIONS: Routine cholangiopancreatoscopy with additional wide-field NIR fluorescence imaging. MAIN OUTCOME MEASUREMENTS: We adapted a miniature cholangioscope for real-time concurrent wide-field color and NIR fluorescence imaging. Illumination is provided through a custom-designed fiber bundle, and the acquired images are relayed via a dichroic beam splitter to 2 charge-coupled devices for simultaneous measurement. We characterize the sensitivity and resolution and demonstrate the clinical feasibility by detecting indocyanine green localization in 2 patients. RESULTS: A spatial optical resolution of approximately 50 μm was achieved, and fluorescent dye concentrations of 17.3 nM could be detected. Elevated fluorescence signals were detected during clinical measurements, and biopsy specimens confirmed the presence of malignancy in both patients. LIMITATIONS: Feasibility study, limited number of patients. CONCLUSIONS: The results demonstrate that real-time wide-field fluorescence detection in the NIR range is possible in humans by using adapted endoscopes. The feasibility of detecting indocyanine green in the pancreatobiliary ducts is verified, suggesting that cancer screening at a molecular level might play an increasingly important role in the future.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
ICG; IPMN; NIR; indocyanine green; intraductal papillary mucinous neoplasm; near-infrared; Bile-duct Cancer; Biliary Strictures; Indocyanine Green; Cholangioscopy; Diagnosis; Lesions; Tract; Ercp
ISSN (print) / ISBN
0016-5107
e-ISSN
1097-6779
Zeitschrift
Gastrointestinal Endoscopy
Quellenangaben
Band: 79,
Heft: 4,
Seiten: 664–668
Verlag
Elsevier
Verlagsort
New York
Nichtpatentliteratur
Publikationen
Begutachtungsstatus
Peer reviewed