Tracked regularized ultrasound elastography for targeting breast radiotherapy.

Hassan Rivaz, Pezhman Foroughi, Ioana Fleming, Richard Zellars, Emad Boctor, Gregory Hager

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Tracked ultrasound elastography can be used for guidance in partial breast radiotherapy by visualizing the hard scar tissue around the lumpectomy cavity. For clinical success, the elastography method needs to be robust to the sources of decorrelation between ultrasound images, specifically fluid motions inside the cavity, change of the appearance of speckles caused by compression or physiologic motions, and out-of-plane motion of the probe. In this paper, we present a novel elastography technique that is based on analytic minimization of a regularized cost function. The cost function incorporates similarity of RF data intensity and displacement continuity, making the method robust to small decorrelations present throughout the image. We also exploit techniques from robust statistics to make the method resistant to large decorrelations caused by sources such as fluid motion. The analytic displacement estimation works in real-time. Moreover, the tracked data, used for targeting the radiotherapy, is exploited for discarding frames with excessive out-of-plane motion. Simulation, phantom and patient results are presented.

Original languageEnglish (US)
Title of host publicationMedical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention
Pages507-515
Number of pages9
Volume12
EditionPt 1
StatePublished - 2009

Fingerprint

Elasticity Imaging Techniques
Breast
Radiotherapy
Patient Simulation
Costs and Cost Analysis
Segmental Mastectomy
Cicatrix

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Rivaz, H., Foroughi, P., Fleming, I., Zellars, R., Boctor, E., & Hager, G. (2009). Tracked regularized ultrasound elastography for targeting breast radiotherapy. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention (Pt 1 ed., Vol. 12, pp. 507-515)

Tracked regularized ultrasound elastography for targeting breast radiotherapy. / Rivaz, Hassan; Foroughi, Pezhman; Fleming, Ioana; Zellars, Richard; Boctor, Emad; Hager, Gregory.

Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Vol. 12 Pt 1. ed. 2009. p. 507-515.

Research output: Chapter in Book/Report/Conference proceedingChapter

Rivaz, H, Foroughi, P, Fleming, I, Zellars, R, Boctor, E & Hager, G 2009, Tracked regularized ultrasound elastography for targeting breast radiotherapy. in Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Pt 1 edn, vol. 12, pp. 507-515.
Rivaz H, Foroughi P, Fleming I, Zellars R, Boctor E, Hager G. Tracked regularized ultrasound elastography for targeting breast radiotherapy. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Pt 1 ed. Vol. 12. 2009. p. 507-515
Rivaz, Hassan ; Foroughi, Pezhman ; Fleming, Ioana ; Zellars, Richard ; Boctor, Emad ; Hager, Gregory. / Tracked regularized ultrasound elastography for targeting breast radiotherapy. Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Vol. 12 Pt 1. ed. 2009. pp. 507-515
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