Endoscopy 2020; 52(S 01): S199-S200
DOI: 10.1055/s-0040-1704621
ESGE Days 2020 ePoster Podium presentations
Friday, April 24, 2020 15:30 – 16:00 Capsule 3 ePoster Podium 5
© Georg Thieme Verlag KG Stuttgart · New York

THE NEW GENERATION OF EXPRESS VIEW IS HIGHLY ACCURATE AND IS EFFECTIVE TO REDUCE CAPSULE ENDOSCOPY READING TIME

S Piccirelli
1   Fondazione Poliambulanza, Digestive Endoscopy Unit and Gastroenterology, Brescia, Italy
2   Fondazione Policlinico Universitario A. Gemelli IRCCS -Università Cattolica del Sacro Cuore, Department of Gastroenterology, Rome, Italy
,
A Mussetto
3   S. Maria delle Croci Hospital, Gastroenterology Unit, Ravenna, Italy
,
A Bellumat
4   S Maria del Prato Hospital, Department of Gastroenterology and Digestive Endoscopy, Belluno, Italy
,
R Cannizzaro
5   Centro di Riferimento Oncologico (CRO) IRCCS, Oncological Gastroenterology Division, Aviano, Italy
,
M Pennazio
6   City of Health and Science University Hospital, University Division of Gastroenterology, Turin, Italy
,
A Pezzoli
7   Sant’Anna University Hospital, Department of Gastroenterology and Endoscopy Unit, Ferrara, Italy
,
A Bizzotto
1   Fondazione Poliambulanza, Digestive Endoscopy Unit and Gastroenterology, Brescia, Italy
,
N Fusetti
7   Sant’Anna University Hospital, Department of Gastroenterology and Endoscopy Unit, Ferrara, Italy
,
F Valiante
4   S Maria del Prato Hospital, Department of Gastroenterology and Digestive Endoscopy, Belluno, Italy
,
C Spada
1   Fondazione Poliambulanza, Digestive Endoscopy Unit and Gastroenterology, Brescia, Italy
2   Fondazione Policlinico Universitario A. Gemelli IRCCS -Università Cattolica del Sacro Cuore, Department of Gastroenterology, Rome, Italy
› Author Affiliations
Further Information

Publication History

Publication Date:
23 April 2020 (online)

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Aims Capsule Endoscopy (CE) is a first-line diagnostic test in patients with suspected small bowel bleeding (SSBB). Since CE reading is time-consuming, innovative types of reading software have been developed. The new generation reading algorithm ‘Express-View’(EV) by MiroCam aims to reduce CE reading time by removing images based upon their similarity, without affecting the diagnostic yield.

Primary aim: evaluation of EV accuracy in patients with SSBB.

Secondary aim: evaluation of the reading time with the EV compared to Standard Reading (SR).

Methods This interim analysis included 48 pts with SSBB prospectively enrolled to undergo small bowel-CE. SR was initially performed according to the ESGE guidelines.

A second reading was performed using the EV mode by an external,blinded reader. Visualization time,nature,and relevance of lesions were collected.

EV accuracy was calculated before and after a consensus performed by two experienced investigators to re-classify dicordant cases. Reading time was also evaluated.

Results 47/48 patients performed a complete VCE examination. Cecal visualization was achieved in 43 pts(91.5%).

In 33/47 pts (70.2%) both SR and EV were in agreement for type of lesion and localization, while in the remaining 14 pts (29.8%) SR and EV had different results. After consensus, in 12/14 cases EV was reclassified to properly detect the lesion, being the prevoius disagreement considered related to a reader-misinterpretation. In the remaining 2pts (4.2%), EV mode missed relevant lesions.

Pre-consensus and post-consensus accuracy parameters are shown in the table.

Tab. 1

Diagnostic accuracy of Express View compared to Standard Reading

(values in %)

Sensitivity

Specificity

PPV

NPV

Pre-consensus

71.9

66.7

82.1

52.6

Post-consensus

94.6

100

100

83.3

Mean reading time at SR and EV was 84.13 ± 53.63 min and 14.79 ± 11.2 min, respectively (p< 0.001).

Conclusions Preliminary results suggest that EV algorithm shows excellent accuracy and significantly reduces CE reading time.