Validation of Fujinon intelligent chromoendoscopy with high definition endoscopes in colonoscopy.
OBJECTIVE
To validate high definition endoscopes with Fujinon intelligent chromoendoscopy (FICE) in colonoscopy.


METHODS
The image quality of normal white light endoscopy (WLE), that of the 10 available FICE filters and that of a gold standard (0.2% indigo carmine dye) were compared.


RESULTS
FICE-filter 4 [red, green, and blue (RGB) wavelengths of 520, 500, and 405 nm, respectively] provided the best images for evaluating the vascular pattern compared to white light. The mucosal surface was best assessed using filter 4. However, the views obtained were not rated significantly better than those observed with white light. The "gold standard", indigo carmine (IC) dye, was found to be superior to both white light and filter 4. Filter 6 (RGB wavelengths of 580, 520, and 460 nm, respectively) allowed for exploration of the IC-stained mucosa. When assessing mucosal polyps, both FICE with magnification, and magnification following dye spraying were superior to the same techniques without magnification and to white light imaging. In the presence of suboptimal bowel preparation, observation with the FICE mode was possible, and endoscopists considered it to be superior to observation with white light.


CONCLUSIONS
FICE-filter 4 with magnification improves the image quality of the colonic vascular patterns obtained with WLE.
Parra-Blanco
Adolfo
A
Department of Gastroenterology, University Hospital of the Canary Islands, Tenerife, Spain. parrablanco@hotmail.com
Jiménez
Alejandro
A
Rembacken
Björn
B
González
Nicolás
N
Nicolás-Pérez
David
D
Gimeno-García
Antonio Z
AZ
Carrillo-Palau
Marta
M
Matsuda
Takahisa
T
Quintero
Enrique
E
D002329:Carmine; D003106:Colon / Q000098:blood supply; D003111:Colonic Polyps / Q000473:pathology*; D023881:Colonography, Computed Tomographic; D020685:Colonoscopes; D003113:Colonoscopy / Q000379:methods*; D004396:Coloring Agents; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D007203:Indigo Carmine; D007211:Indoles; D008027:Light; D014741:Video Recording / Q000295:instrumentation*
D004396:Coloring Agents; D007211:Indoles; D002329:Carmine; D007203:Indigo Carmine