Ablation monitoring with elastography: 2D in-vivo and 3D ex-vivo studies.

Hassan Rivaz, Ioana Fleming, Lia Assumpcao, Gabor Fichtinger, Ulrike Hamper, Michael Choti, Gregory Hager, Emad Boctor

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The clinical feasibility of 2D elastography methods is hindered by the requirement that the operator avoid out-of-plane motion of the ultrasound image during palpation, and also by the lack of volumetric elastography measurements. In this paper, we develop and evaluate a 3D elastography method operating on volumetric data acquired from a 3D probe. Our method is based on minimizing a cost function using dynamic programming (DP). The cost function incorporates similarity of echo amplitudes and displacement continuity. We present, to the best of our knowledge, the first in-vivo patient studies of monitoring liver ablation with freehand DP elastography. The thermal lesion was not discernable in the B-mode image but it was clearly visible in the strain image as well as in validation CT. We also present 3D strain images from thermal lesions in ex-vivo ablation. Good agreement was observed between strain images, CT and gross pathology.

Original languageEnglish (US)
Title of host publicationMedical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention
Pages458-466
Number of pages9
Volume11
EditionPt 2
StatePublished - 2008

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Elasticity Imaging Techniques
Hot Temperature
Costs and Cost Analysis
Palpation
Physiologic Monitoring
Pathology
Liver

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Rivaz, H., Fleming, I., Assumpcao, L., Fichtinger, G., Hamper, U., Choti, M., ... Boctor, E. (2008). Ablation monitoring with elastography: 2D in-vivo and 3D ex-vivo studies. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention (Pt 2 ed., Vol. 11, pp. 458-466)

Ablation monitoring with elastography : 2D in-vivo and 3D ex-vivo studies. / Rivaz, Hassan; Fleming, Ioana; Assumpcao, Lia; Fichtinger, Gabor; Hamper, Ulrike; Choti, Michael; Hager, Gregory; Boctor, Emad.

Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Vol. 11 Pt 2. ed. 2008. p. 458-466.

Research output: Chapter in Book/Report/Conference proceedingChapter

Rivaz, H, Fleming, I, Assumpcao, L, Fichtinger, G, Hamper, U, Choti, M, Hager, G & Boctor, E 2008, Ablation monitoring with elastography: 2D in-vivo and 3D ex-vivo studies. in Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Pt 2 edn, vol. 11, pp. 458-466.
Rivaz H, Fleming I, Assumpcao L, Fichtinger G, Hamper U, Choti M et al. Ablation monitoring with elastography: 2D in-vivo and 3D ex-vivo studies. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Pt 2 ed. Vol. 11. 2008. p. 458-466
Rivaz, Hassan ; Fleming, Ioana ; Assumpcao, Lia ; Fichtinger, Gabor ; Hamper, Ulrike ; Choti, Michael ; Hager, Gregory ; Boctor, Emad. / Ablation monitoring with elastography : 2D in-vivo and 3D ex-vivo studies. Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Vol. 11 Pt 2. ed. 2008. pp. 458-466
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