Narrow-band imaging system has been developed at the National Cancer Center Hospital East, Japan.
The technology of the narrow-band imaging system is based on modifying the spectral features by narrowing the bandwidth of spectral transmittance using various optical filters.
The narrow-band imaging system consists of 3, including 41,530 nm, 44,530 nm, and 50,030 nm, which are used to observe the fine capillaries in the superficial mucosa.
This is essential to identify gastrointestinal neoplasms.
|Narrow-band imaging differentiates hyperplastic polyp from adenomatous polyp|
Dr Yasushi Sano and colleagues report that the narrow-band imaging system has been in development since 1999 and its efficacy for gastrointestinal tract use was first reported in 2000.
The investigative team conducted a pilot study using the narrow-band imaging system.
The team has shown that this system may be sufficient to differentiate hyperplastic polyp from adenomatous polyp.
The investigators also observed that narrow-band imaging can visualize neoplasia with image processing in real-time during colonoscopy without the need for dye spraying.
The team proposes the term “optical/digital chromoendoscopy” using the narrow-band imaging system and hope.
Dr Sano's team commented, “We propose that this instrument will become standard endoscopy for in the 21st century.”
“To estimate the feasibility and efficacy of using the narrow-band imaging system for surveillance or screening examination, randomized control trials should be conducted in the future.”