TY - JOUR

T1 - Stress echocardiography with smartphone

T2 - real-time remote reading for regional wall motion

AU - Stress Echo 2020 study group of the Italian Society of Cardiovascular Echography

AU - Scali, Maria Chiara

AU - de Azevedo Bellagamba, Clarissa Carmona

AU - Ciampi, Quirino

AU - Simova, Iana

AU - de Castro e Silva Pretto, José Luis

AU - Djordjevic-Dikic, Ana

AU - Dodi, Claudio

AU - Cortigiani, Lauro

AU - Zagatina, Angela

AU - Trambaiolo, Paolo

AU - Torres, Marco R.

AU - Citro, Rodolfo

AU - Colonna, Paolo

AU - Paterni, Marco

AU - Picano, Eugenio

PY - 2017/11/1

Y1 - 2017/11/1

N2 - The diffusion of smart-phones offers access to the best remote expertise in stress echo (SE). To evaluate the reliability of SE based on smart-phone filming and reading. A set of 20 SE video-clips were read in random sequence with a multiple choice six-answer test by ten readers from five different countries (Italy, Brazil, Serbia, Bulgaria, Russia) of the “SE2020” study network. The gold standard to assess accuracy was a core-lab expert reader in agreement with angiographic verification (0 = wrong, 1 = right). The same set of 20 SE studies were read, in random order and >2 months apart, on desktop Workstation and via smartphones by ten remote readers. Image quality was graded from 1 = poor but readable, to 3 = excellent. Kappa (k) statistics was used to assess intra- and inter-observer agreement. The image quality was comparable in desktop workstation vs. smartphone (2.0 ± 0.5 vs. 2.4 ± 0.7, p = NS). The average reading time per case was similar for desktop versus smartphone (90 ± 39 vs. 82 ± 54 s, p = NS). The overall diagnostic accuracy of the ten readers was similar for desktop workstation vs. smartphone (84 vs. 91%, p = NS). Intra-observer agreement (desktop vs. smartphone) was good (k = 0.81 ± 0.14). Inter-observer agreement was good and similar via desktop or smartphone (k = 0.69 vs. k = 0.72, p = NS). The diagnostic accuracy and consistency of SE reading among certified readers was high and similar via desktop workstation or via smartphone.

AB - The diffusion of smart-phones offers access to the best remote expertise in stress echo (SE). To evaluate the reliability of SE based on smart-phone filming and reading. A set of 20 SE video-clips were read in random sequence with a multiple choice six-answer test by ten readers from five different countries (Italy, Brazil, Serbia, Bulgaria, Russia) of the “SE2020” study network. The gold standard to assess accuracy was a core-lab expert reader in agreement with angiographic verification (0 = wrong, 1 = right). The same set of 20 SE studies were read, in random order and >2 months apart, on desktop Workstation and via smartphones by ten remote readers. Image quality was graded from 1 = poor but readable, to 3 = excellent. Kappa (k) statistics was used to assess intra- and inter-observer agreement. The image quality was comparable in desktop workstation vs. smartphone (2.0 ± 0.5 vs. 2.4 ± 0.7, p = NS). The average reading time per case was similar for desktop versus smartphone (90 ± 39 vs. 82 ± 54 s, p = NS). The overall diagnostic accuracy of the ten readers was similar for desktop workstation vs. smartphone (84 vs. 91%, p = NS). Intra-observer agreement (desktop vs. smartphone) was good (k = 0.81 ± 0.14). Inter-observer agreement was good and similar via desktop or smartphone (k = 0.69 vs. k = 0.72, p = NS). The diagnostic accuracy and consistency of SE reading among certified readers was high and similar via desktop workstation or via smartphone.

KW - Echocardiography

KW - Stress echocardiography

KW - Wall motion

UR - http://www.scopus.com/inward/record.url?scp=85019655870&partnerID=8YFLogxK

U2 - 10.1007/s10554-017-1167-2

DO - 10.1007/s10554-017-1167-2

M3 - Article

C2 - 28550586

AN - SCOPUS:85019655870

VL - 33

SP - 1731

EP - 1736

JO - International Journal of Cardiovascular Imaging

JF - International Journal of Cardiovascular Imaging

SN - 1569-5794

IS - 11

ER -