TY - GEN
T1 - Ablation monitoring with elastography
T2 - 11th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2008
AU - Rivaz, Hassan
AU - Fleming, Ioana
AU - Assumpcao, Lia
AU - Fichtinger, Gabor
AU - Hamper, Ulrike
AU - Choti, Michael
AU - Hager, Gregory
AU - Boctor, Emad
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=58849142077&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=58849142077&partnerID=8YFLogxK
U2 - 10.1007/978-3-540-85990-1_55
DO - 10.1007/978-3-540-85990-1_55
M3 - Conference contribution
C2 - 18982637
AN - SCOPUS:58849142077
SN - 3540859896
SN - 9783540859895
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 458
EP - 466
BT - Medical Image Computing and Computer-Assisted Intervention - MICCAI 2008 - 11th International Conference, Proceedings
PB - Springer Verlag
Y2 - 6 September 2008 through 10 September 2008
ER -