Abstract
Intraductal ultrasonography (IDUS) is a widely used imaging modality for evaluating gastrointestinal disorders. This modality provides ultrasound images from the inside of the bile or pancreatic duct with a high-frequency ultrasound probe with a thin diameter, particularly in the biliopancreatic region. The indications of IDUS for pancreatobiliary lesions include the diagnosis of small residual common bile duct stones after endoscopic extraction, differential diagnosis of biliary strictures, the diagnosis of pancreaticobiliary maljunction, the staging of biliary duct carcinomas, the diagnosis of invasion of intraductal papillary tumors, and the staging of periampullary carcinomas.
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Nagahama, M. (2019). IDUS: Introduction. In: Mine, T., Fujita, R. (eds) Advanced Therapeutic Endoscopy for Pancreatico-Biliary Diseases. Springer, Tokyo. https://doi.org/10.1007/978-4-431-56009-8_15
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DOI: https://doi.org/10.1007/978-4-431-56009-8_15
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