Ultrasound monitoring of tissue ablation via deformation model and shape priors.

Emad Boctor, Michelle deOliveira, Michael Choti, Roger Ghanem, Russell H Taylor, Gregory Hager, Gabor Fichtinger

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

A rapid approach to monitor ablative therapy through optimizing shape and elasticity parameters is introduced. Our motivating clinical application is targeting and intraoperative monitoring of hepatic tumor thermal ablation, but the method translates to the generic problem of encapsulated stiff masses (solid organs, tumors, ablated lesions, etc.) in ultrasound imaging. The approach involves the integration of the following components: a biomechanical computational model of the tissue, a correlation approach to estimate/track tissue deformation, and an optimization method to solve the inverse problem and recover the shape parameters in the volume of interest. Successful convergence and reliability studies were conducted on simulated data. Then ex-vivo studies were performed on 18 ex-vivo bovine liver samples previously ablated under ultrasound monitoring in controlled laboratory environment. While B-mode ultrasound does not clearly identify the development of necrotic lesions, the proposed technique can potentially segment the ablation zone. The same framework can also yield both partial and full elasticity reconstruction.

Original languageEnglish (US)
Title of host publicationMedical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention
Pages405-412
Number of pages8
Volume9
EditionPt 2
StatePublished - 2006

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Elasticity
Intraoperative Monitoring
Controlled Environment
Liver
Ultrasonography
Neoplasms
Hot Temperature
Therapeutics

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Boctor, E., deOliveira, M., Choti, M., Ghanem, R., Taylor, R. H., Hager, G., & Fichtinger, G. (2006). Ultrasound monitoring of tissue ablation via deformation model and shape priors. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention (Pt 2 ed., Vol. 9, pp. 405-412)

Ultrasound monitoring of tissue ablation via deformation model and shape priors. / Boctor, Emad; deOliveira, Michelle; Choti, Michael; Ghanem, Roger; Taylor, Russell H; Hager, Gregory; Fichtinger, Gabor.

Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Vol. 9 Pt 2. ed. 2006. p. 405-412.

Research output: Chapter in Book/Report/Conference proceedingChapter

Boctor, E, deOliveira, M, Choti, M, Ghanem, R, Taylor, RH, Hager, G & Fichtinger, G 2006, Ultrasound monitoring of tissue ablation via deformation model and shape priors. in Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Pt 2 edn, vol. 9, pp. 405-412.
Boctor E, deOliveira M, Choti M, Ghanem R, Taylor RH, Hager G et al. Ultrasound monitoring of tissue ablation via deformation model and shape priors. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Pt 2 ed. Vol. 9. 2006. p. 405-412
Boctor, Emad ; deOliveira, Michelle ; Choti, Michael ; Ghanem, Roger ; Taylor, Russell H ; Hager, Gregory ; Fichtinger, Gabor. / Ultrasound monitoring of tissue ablation via deformation model and shape priors. Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Vol. 9 Pt 2. ed. 2006. pp. 405-412
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