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©2014 Baishideng Publishing Group Inc. All rights reserved.
Capsule endoscopy capture rate: Has 4 frames-per-second any impact over 2 frames-per-second?
Ignacio Fernandez-Urien, Cristina Carretero, Erika Borobio, Ana Borda, Emilio Estevez, Sara Galter, Begoña Gonzalez-Suarez, Benito Gonzalez, Marisol Lujan, Jose Luis Martinez, Vanessa Martínez, Pedro Menchén, Javier Navajas, Vicente Pons, Cesar Prieto, Julio Valle
Ignacio Fernandez-Urien, Erika Borobio, Ana Borda, Department of Gastroenterology, Hospital de Navarra, 31008 Pamplona, Spain
Cristina Carretero, Cesar Prieto, Department of Gastroenterology, Clínica Universidad de Navarra, 31008 Pamplona, Spain
Emilio Estevez, Benito Gonzalez, Department of Gastroenterology, Hospital Juan Canalejo, 26131 La Coruña, Spain
Sara Galter, Department of Gastroenterology, Hospital de Tarrasa, 08509 Barcelona, Spain
Begoña Gonzalez-Suarez, Department of Gastroenterology, Hospital del Mar, 08509 Barcelona, Spain
Marisol Lujan, Department of Gastroenterology, Hospital General de Valencia, 46367 Valencia, Spain
Jose Luis Martinez, Department of Gastroenterology, Hospital Puerta de Hierro, 28816 Madrid, Spain
Vanessa Martínez, Vicente Pons, Department of Gastroenterology, Hospital La Fe, 46367 Valencia, Spain
Pedro Menchén, Department of Gastroenterology, Hospital Gregorio Marañón, 28816 Madrid, Spain
Javier Navajas, Julio Valle, Department of Gastroenterology, Complejo Hospitalario de Toledo, 45591 Toledo, Spain
Author contributions: Fernandez-Urien I designed the study, included 10 patients, and wrote/edited the manuscript; Carretero C was involved in editing the paper and study design; Borobio E and Borda A collected and analyzed the data; Estevez E, Galter S, Gonzalez-Suarez B, Gonzalez B, Lujan M, Martinez JL, Martínez V, Menchén P, Navajas J and Prieto C included 10 patients and reviewed the videos; Pons V was involved in study design and editing the paper; Valle J reviewed the videos; all authors reviewed the final version of the manuscript, suggested changes and corrections, and were asked to give their permission in order to send it for publishing.
Correspondence to: Ignacio Fernandez-Urien, MD, PhD, Department of Gastroenterology, Hospital de Navarra, c/Irunlarrea 3, 31008 Pamplona, Spain. ifurien@yahoo.es
Telephone: +34-948-422328 Fax: +34-948-296500
Received: April 2, 2014
Revised: May 20, 2014
Accepted: June 26, 2014
Published online: October 21, 2014
AIM: To compare the current capsule and a new prototype at 2 and 4 frames-per-second, respectively, in terms of clinical and therapeutic impact.
METHODS: One hundred patients with an indication for capsule endoscopy were included in the study. All procedures were performed with the new device (SB24). After an exhaustive evaluation of the SB24 videos, they were then converted to “SB2-like” videos for their evaluation. Findings, frames per finding, and clinical and therapeutic impact derived from video visualization were analyzed. Kappa index for interobserver agreement and χ2 and Student’s t tests for qualitative/quantitative variables, respectively, were used. Values of P under 0.05 were considered statistically significant.
RESULTS: Eighty-nine out of 100 cases included in the study were ultimately included in the analysis. The SB24 videos detected the anatomical landmarks (Z-line and duodenal papilla) and lesions in more patients than the “SB2-like” videos. On the other hand, the SB24 videos detected more frames per landmark/lesion than the “SB2-like” videos. However, these differences were not statistically significant (P > 0.05). Both clinical and therapeutic impacts were similar between SB24 and “SB2-like” videos (K = 0.954). The time spent by readers was significantly higher for SB24 videos visualization (P < 0.05) than for “SB2-like” videos when all images captured by the capsule were considered. However, these differences become non-significant if we only take into account small bowel images (P > 0.05).
CONCLUSION: More frames-per-second detect more landmarks, lesions, and frames per landmark/lesion, but is time consuming and has a very low impact on clinical and therapeutic management.
Core tip: Capsule endoscopy has been demonstrated to be very accurate for small bowel lesions detection. Currently, most capsule endoscopes take 2 frames-per-second. Whether more frames-per-second could increase the diagnostic accuracy has not been previously investigated. The present study demonstrates that more frames per second is time consuming and has a very low impact in clinical and therapeutic management.
