Virtual chromoendoscopy in small bowel capsule endoscopy: New light or a cast of shadow?

Cotter, José; Magalhães, Joana; Castro, Francisca Dias de; Barbosa, Marco António; Carvalho, Pedro Boal; Leite, Sílvia; Moreira, Maria João; Rosa, Bruno

doi:10.4253/wjge.v6.i8.359

Cited by 28 publications

(28 citation statements)

References 24 publications

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“…If the capsule remained in the stomach after domperidone administration, it was passed into the duodenum by upper gastrointestinal endoscopy [10,11]. The complete video obtained in each SBCE was reviewed by 2 gastroenterologists with vast experience in capsule endoscopy using Rapid ® Reader Software, at a rate of 8-15 frames per second [12].…”

Section: Methodsmentioning

confidence: 99%

RHEMITT Score: Predicting the Risk of Rebleeding for Patients with Mid-Gastrointestinal Bleeding Submitted to Small Bowel Capsule Endoscopy

Magalhães

Gonçalves

Rosa

et al. 2019

Dig Dis

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Introduction: Small bowel capsule endoscopy (SBCE) is the gold standard for mid-gastrointestinal bleeding (MGIB). No score has been developed to predict the risk of small bowel rebleeding after SBCE. Objective: Creating a predictive small bowel rebleeding risk score for MGIB, after initial SBCE. Methods: Retrospective, single center study, including SBCEs for MGIB, from June 2006 to October 2016. The minimum follow-up was 12 months. Univariate analysis and a multivariable Cox regression model tested the association with rebleeding. Statistically significant variables were used to compute the score. The score's accuracy was tested through a receiver operating characteristic (ROC) curve. A classification tree identified risk groups. For internal validation, we performed a 5-fold cross validation. Results: We assessed 357 SBCEs for MGIB, of which 88 (24.6%) presented rebleeding during follow-up. Seven variables were used to compute a risk-predicting score -the RHEMITT score -namely, renal disease; heart failure; endoscopic capsule P1/P2 lesions; major bleeding; incomplete capsule; tobacco consumption; and endoscopic treatment. The score presented good accuracy toward the outcome (area under the curve ROC 0.842, 95% CI 0.757-0.927). We established 3 rebleeding risk groups: low (0-3 points); intermediate (4-10 points); and high (+11 points). Conclusion: A new MGIB score, named RHEMITT, accurately anticipates the individual risk of small bowel rebleeding after initial SBCE.

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Section: Methodsmentioning

confidence: 99%

RHEMITT Score: Predicting the Risk of Rebleeding for Patients with Mid-Gastrointestinal Bleeding Submitted to Small Bowel Capsule Endoscopy

Magalhães

Gonçalves

Rosa

et al. 2019

Dig Dis

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“…Domperidone was used (10 mg) if the SBCE remained in the stomach for over 1h (assessed through real-time viewing) (4) . Four gastroenterologists with experience in SBCE (>100 examinations), whose inter-observer percentage of agreement was previously shown to be near-perfect (5,6) reviewed the exams using conventional viewing (reading speed was defined as 10-12 fps in single image view for all patients). Another expert (>250 SBCE examinations), blinded to the initial capsule findings, marked down all SBI findings.…”

Section: Methodsmentioning

confidence: 99%

“…4831-044 -Guimarães, Portugal. E-mail: pedroboalcarvalho@chaa.min-saude.pt a multiframe viewing system (7) , virtual chromoendoscopy FICE ® mode to highlight surface patterns and mucosal lesions (6,9) , the algorithm Quickview ® that compresses the video by identifying the most distinct images and hiding similar patterns (11) and finally, the suspected blood indicator ® (SBI), where frames with red-coloured pixels are tagged and considered for revision (14) . SBI is easily assessable during SBCE video review, and may be found under the "Tools" tab ( Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Suspected blood indicator in capsule endoscopy: a valuable tool for gastrointestinal bleeding diagnosis

Carvalho

Magalhães

Castro

et al. 2017

Arq. Gastroenterol.

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-Background -Small bowel bleeding is a leading indication for small bowel capsule endoscopy. The Suspected Blood Indicator (SBI) is a software feature directed to automatically detect bleeding lesions during small bowel capsule endoscopy. Objective -We aimed to assess SBI diagnostic accuracy for small bowel haemorrhage or potentially bleeding lesions during small bowel capsule endoscopy for small bowel bleeding. MethodsSingle-centre retrospective study including 281 consecutive small bowel capsule endoscopy performed for small bowel bleeding during 6 years. The investigators marked lesions with high bleeding potential (P2), such as angioectasias, ulcers and tumours, as well as active bleeding during regular small bowel capsule endoscopy viewing with PillCam SB2 ®

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“…Cotter et al [25] evaluated whether VC can improve the delineation of SBLs previously detected by conventional white-light SBCE. In their study, 100 lesions were reviewed using the 3 FICE settings and the blue filter.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Usefulness of Virtual Chromoendoscopy with Different Color Modes in the MiroCam® System for Characterization of Small Bowel Lesions

Silva

Pinho

Rodrigues

et al. 2018

GE Port J Gastroenterol

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Background: Virtual chromoendoscopy (VC) in small bowel capsule endoscopy can improve the visualization and characterization of different small bowel lesions (SBLs). There are few studies of its usefulness in the Given® system, and there is no evidence yet of its utility in the MiroCam® system. Aim: The aim of this study was to evaluate whether VC can improve the characterization of SBLs with the MiroCam® system. Methods: Twenty-two patients were selected, in which 100 elementary lesions were identified, including erosions (n = 45), ulcers (n = 17), and angioectasias (n = 38). For each lesion identified, images were captured without chromoendoscopy (normal image [NI]) and with chromoendoscopy modes 1 (color mode [CM] 1), 2 (CM2), and 3 (CM3). A score from 1 to 4 was assigned to each image, in which a better evaluation of the characteristics and limits of the lesion was classified in ascending order, where 1 is the worst and 4 the best evaluation. The scores of the various modes were compared with Kendall's tau-c coefficient. Results: The average scores attributed to the photographs in NI, CM1, CM2, and CM3 were 3.83, 2.89, 1.85, and 1.43, respectively (tau-c = -0.75, p < 0.001). Evaluating the elementary lesions independently, the average scores for modes NI, CM1, CM2, and CM3 were 3.83, 2.92, 1.86, and 1.38 (tau-c = -0.77, p < 0.001) for erosions, respectively; 3.87, 2.96, 1.76, and 1.40 (tau-c = -0.80, p < 0.001) for ulcers, respectively; and 3.81, 2.82, 1.87, and 1.50 (tau-c = -0.71, p < 0.001) for angioectasias, respectively. Conclusions: VC using the CMs available in the MiroCam® system has not proven useful for a better assessment of any of the SBLs.

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Virtual chromoendoscopy in small bowel capsule endoscopy: New light or a cast of shadow?

Abstract: Virtual chromoendoscopy can improve the delineation of angioectasias, ulcers/erosions and villous edema/atrophy detected by SBCE, with almost perfect interobserver agreement for FICE 1.

Cited by 28 publications

References 24 publications

RHEMITT Score: Predicting the Risk of Rebleeding for Patients with Mid-Gastrointestinal Bleeding Submitted to Small Bowel Capsule Endoscopy

RHEMITT Score: Predicting the Risk of Rebleeding for Patients with Mid-Gastrointestinal Bleeding Submitted to Small Bowel Capsule Endoscopy

Suspected blood indicator in capsule endoscopy: a valuable tool for gastrointestinal bleeding diagnosis

Evaluation of the Usefulness of Virtual Chromoendoscopy with Different Color Modes in the MiroCam® System for Characterization of Small Bowel Lesions

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