Assessment of surgical skills using Surgical Processes and Dynamic Time Warping

Germain Forestier 1, * Florent Lalys 1 Laurent Riffaud 2 Brivael Trelhu 1 Pierre Jannin 1
* Auteur correspondant
1 VisAGeS - Vision, Action et Gestion d'informations en Santé
INSERM - Institut National de la Santé et de la Recherche Médicale : U746, Inria Rennes – Bretagne Atlantique , IRISA-D5 - SIGNAUX ET IMAGES NUMÉRIQUES, ROBOTIQUE
Abstract : Toward the creation of new computer-assisted intervention systems, Surgical Process Models (SPMs) is an emerging concept used for analyzing and assessing surgical interventions. SPMs represent Surgical Process (SPs) which are formalized as symbolic structured descriptions of surgical interventions, using a pre-defined level of granularity and a dedicated terminology. In this context, an important challenge is the creation of new metrics for the comparison and the evaluation of SPs. Thus, correlations between these metrics and pre-operative data allow to classify surgeries and highlight specific information on the surgery itself and on the surgeon, such as his/her level of expertise. In this paper, we explore the automatic classification of a set of SPs based on the Dynamic Time Warping (DTW) algorithm. DTW allows to compute a distance between two SPs that focuses on the different types of activities performed during surgery and their sequencing, by minimizing time differences. Indeed, it turns out to be a complementary approach to classical methods focusing on the time and the number of activities differences only. Experiments were carried out on 24 lumbar disc herniation surgeries to discriminate the level of expertise of surgeons according to prior classification of SPs. Unsupervised classification experiments have shown that this approach was able to automatically identify groups of surgeons according to their level of expertise (senior and junior), and opens many perspectives for the creation of new metrics for surgeries comparison and evaluation.
Type de document :
Communication dans un congrès
M2CAI 2011 (MICCAI workshop) - Modelling and Monitoring of Computer-Assisted Intervention, Sep 2011, Toronto, Canada
Liste complète des métadonnées

Littérature citée [24 références]  Voir  Masquer  Télécharger

http://www.hal.inserm.fr/inserm-00617017
Contributeur : Florent Lalys <>
Soumis le : jeudi 25 août 2011 - 14:45:57
Dernière modification le : mercredi 26 septembre 2018 - 11:12:06
Document(s) archivé(s) le : lundi 12 novembre 2012 - 15:50:15

Fichier

paper7_DTW_revised.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : inserm-00617017, version 1

Citation

Germain Forestier, Florent Lalys, Laurent Riffaud, Brivael Trelhu, Pierre Jannin. Assessment of surgical skills using Surgical Processes and Dynamic Time Warping. M2CAI 2011 (MICCAI workshop) - Modelling and Monitoring of Computer-Assisted Intervention, Sep 2011, Toronto, Canada. 〈inserm-00617017〉

Partager

Métriques

Consultations de la notice

1194

Téléchargements de fichiers

354