A prospective controlled study of NBI was conducted in 104 consecutive patients with definite or suspected bladder cancer. Transurethral targeted biopsies were performed after white light imaging (WLI) and NBI cystoscopy, and the histologic outcomes were compared.

The narrow-band imaging (NBI) technique, in which modified optical filters are used in the light source of a video endoscope system, narrows the bandwidth of the spectral transmittance. Learn more