Evaluation of the Accuracy of a Video and AI Solution to Measure Lower Leg and Foot Volume

Oriane Chausiaux,1 Gareth Williams,1 Michał Nieznański,1 Adem Bagdu,2 Philip Downer,1 Melanie Keyser,1 Shamus Husheer1 1Heartfelt Technologies Ltd, Cambridge, UK; 2Warwick Medical School, University of Warwick, Coventry, UKCorrespondence: Oriane Chausiaux Email oriane@hftech.orgBackground and Object...

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Autores principales:	Chausiaux O, Williams G, Nieznański M, Bagdu A, Downer P, Keyser M, Husheer S
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2021
Materias:	ai peripheral edema congestion medical device heart failure lymphedema renal disease Medical technology R855-855.5
Acceso en línea:	https://doaj.org/article/705a3bf993c544d1ac4651efbef5ea3c
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spelling	oai:doaj.org-article:705a3bf993c544d1ac4651efbef5ea3c2021-12-02T18:04:55ZEvaluation of the Accuracy of a Video and AI Solution to Measure Lower Leg and Foot Volume1179-1470https://doaj.org/article/705a3bf993c544d1ac4651efbef5ea3c2021-04-01T00:00:00Zhttps://www.dovepress.com/evaluation-of-the-accuracy-of-a-video-and-ai-solution-to-measure-lower-peer-reviewed-article-MDERhttps://doaj.org/toc/1179-1470Oriane Chausiaux,1 Gareth Williams,1 Michał Nieznański,1 Adem Bagdu,2 Philip Downer,1 Melanie Keyser,1 Shamus Husheer1 1Heartfelt Technologies Ltd, Cambridge, UK; 2Warwick Medical School, University of Warwick, Coventry, UKCorrespondence: Oriane Chausiaux Email oriane@hftech.orgBackground and Objectives: Peripheral edema, change in foot volume, is a marker of congestion which is regularly assessed in routine clinical care. A novel video and Artificial Intelligence (AI)-based solution used to measure anatomical parameters, including volume and foot length, Heartfelt HF-1, is compared to the laboratory gold standard (water displacement) and a medical disposable measuring tape.Design, Setting, Participants, and Measurements: 58 healthy volunteers were measured with the Heartfelt device; 22 were also measured with the water displacement method and 19 with the medical tape. Bland–Altman analysis was performed for both volumes and foot lengths. Left/right foot differences provided covariance-corrected standard error of measurement (ccSEM) and minimum detectable difference (MDD) for each measurement method.Results: Heartfelt device measured volumes displayed excellent correlation to the gold standard (water displacement), with Bland–Altman bias of +32mL ± 81mL (1 std.dev). Clinically important change in foot volume is approximately 13%. Water displacement yielded ccSEM of ± 32.1mL and MDD of 90mL (6.7% of average foot volume), while the Heartfelt device measurements yielded ccSEM of ± 12.6mL and MDD of 35.3mL (2.6% of average foot volume). The majority of differences were attributable to manual positioning of the patient foot in the waterbath.Conclusion: This study finds that in clinical and non-clinical settings, the Heartfelt device measures foot volume and length more precisely than either the water displacement technique or manual foot length measurements using a medical disposable tape, while having an excellent agreement with these methods.Keywords: AI, peripheral edema, congestion, -medical device, heart failure, lymphedema, renal diseaseChausiaux OWilliams GNieznański MBagdu ADowner PKeyser MHusheer SDove Medical Pressarticleaiperipheral edemacongestionmedical deviceheart failurelymphedemarenal diseaseMedical technologyR855-855.5ENMedical Devices: Evidence and Research, Vol Volume 14, Pp 105-118 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ai peripheral edema congestion medical device heart failure lymphedema renal disease Medical technology R855-855.5
spellingShingle	ai peripheral edema congestion medical device heart failure lymphedema renal disease Medical technology R855-855.5 Chausiaux O Williams G Nieznański M Bagdu A Downer P Keyser M Husheer S Evaluation of the Accuracy of a Video and AI Solution to Measure Lower Leg and Foot Volume
description	Oriane Chausiaux,1 Gareth Williams,1 Michał Nieznański,1 Adem Bagdu,2 Philip Downer,1 Melanie Keyser,1 Shamus Husheer1 1Heartfelt Technologies Ltd, Cambridge, UK; 2Warwick Medical School, University of Warwick, Coventry, UKCorrespondence: Oriane Chausiaux Email oriane@hftech.orgBackground and Objectives: Peripheral edema, change in foot volume, is a marker of congestion which is regularly assessed in routine clinical care. A novel video and Artificial Intelligence (AI)-based solution used to measure anatomical parameters, including volume and foot length, Heartfelt HF-1, is compared to the laboratory gold standard (water displacement) and a medical disposable measuring tape.Design, Setting, Participants, and Measurements: 58 healthy volunteers were measured with the Heartfelt device; 22 were also measured with the water displacement method and 19 with the medical tape. Bland–Altman analysis was performed for both volumes and foot lengths. Left/right foot differences provided covariance-corrected standard error of measurement (ccSEM) and minimum detectable difference (MDD) for each measurement method.Results: Heartfelt device measured volumes displayed excellent correlation to the gold standard (water displacement), with Bland–Altman bias of +32mL ± 81mL (1 std.dev). Clinically important change in foot volume is approximately 13%. Water displacement yielded ccSEM of ± 32.1mL and MDD of 90mL (6.7% of average foot volume), while the Heartfelt device measurements yielded ccSEM of ± 12.6mL and MDD of 35.3mL (2.6% of average foot volume). The majority of differences were attributable to manual positioning of the patient foot in the waterbath.Conclusion: This study finds that in clinical and non-clinical settings, the Heartfelt device measures foot volume and length more precisely than either the water displacement technique or manual foot length measurements using a medical disposable tape, while having an excellent agreement with these methods.Keywords: AI, peripheral edema, congestion, -medical device, heart failure, lymphedema, renal disease
format	article
author	Chausiaux O Williams G Nieznański M Bagdu A Downer P Keyser M Husheer S
author_facet	Chausiaux O Williams G Nieznański M Bagdu A Downer P Keyser M Husheer S
author_sort	Chausiaux O
title	Evaluation of the Accuracy of a Video and AI Solution to Measure Lower Leg and Foot Volume
title_short	Evaluation of the Accuracy of a Video and AI Solution to Measure Lower Leg and Foot Volume
title_full	Evaluation of the Accuracy of a Video and AI Solution to Measure Lower Leg and Foot Volume
title_fullStr	Evaluation of the Accuracy of a Video and AI Solution to Measure Lower Leg and Foot Volume
title_full_unstemmed	Evaluation of the Accuracy of a Video and AI Solution to Measure Lower Leg and Foot Volume
title_sort	evaluation of the accuracy of a video and ai solution to measure lower leg and foot volume
publisher	Dove Medical Press
publishDate	2021
url	https://doaj.org/article/705a3bf993c544d1ac4651efbef5ea3c
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Evaluation of the Accuracy of a Video and AI Solution to Measure Lower Leg and Foot Volume

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