Measurement and impact of proximal and distal tortuosity in carotid stenting procedures Gianluca Faggioli, MD, Monica Ferri, MD, Mauro Gargiulo, MD, Antonio.

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Measurement and impact of proximal and distal tortuosity in carotid stenting procedures Gianluca Faggioli, MD, Monica Ferri, MD, Mauro Gargiulo, MD, Antonio Freyrie, MD, Francesca Fratesi, MD, Lamberto Manzoli, MD, Andrea Stella, MD Journal of Vascular Surgery Volume 46, Issue 6, Pages 1119-1124 (December 2007) DOI: 10.1016/j.jvs.2007.08.027 Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

Fig 1 Method of tortuosity index (TI) measurement: (a) A + B + C = proximal TI; (b) A1 + B1 + C1 = distal TI. Journal of Vascular Surgery 2007 46, 1119-1124DOI: (10.1016/j.jvs.2007.08.027) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

Fig 2 Influence of proximal tortuosity index (TI) in technical failure: (a) Technical failure in a bovine arch and severe proximal tortuosity (TI >150°); (b) carotid artery stenting is successful in a similar situation (bovine arch) but with TI <150°. Journal of Vascular Surgery 2007 46, 1119-1124DOI: (10.1016/j.jvs.2007.08.027) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

Fig 3 Technical success with coiling in a patient with distal internal carotid artery >150° (coiling). Journal of Vascular Surgery 2007 46, 1119-1124DOI: (10.1016/j.jvs.2007.08.027) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions