Article
Processing and visualizing three-dimensional ultrasound data.
Department of Engineering, University of Cambridge, Trumpington Street, Cambridge, UK.
British Journal of Radiology (impact factor:
1.31).
02/2004;
77 Spec No 2:S186-93.
pp.S186-93
Source: PubMed
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Citations (0)
- Cited In (3)
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Article: Reducing motion artifacts in 3-D breast ultrasound using non-linear registration.
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ABSTRACT: Automated full-field 3-D breast ultrasound (3DBUS) has a high potential as a reproducible method for screening and intervention. Consecutive linear transducer scans yield a consistent breast ultrasound volume, yet individual slices are prone to tissue deformation and motion. To compensate resulting image distortions, we propose an efficient non-rigid registration method applied sequentially to pairs of 3DBUS volume slices, optionally either on-line or in post-processing. A quantitative evaluation of the method on synthetic deformations shows subvoxel registration accuracy. First application to clinical breast US images and preliminary results confirmed effectiveness and accuracy of the method.Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. 02/2008; 11(Pt 2):998-1005. -
Conference Proceeding: Fast B-Mode Ultrasound Image Simulation of Deformed Tissue
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ABSTRACT: This paper presents a fast image synthesis procedure inside elastic volumes under deformation simulated by the finite element method (FEM). Given the node displacements of a mesh and the 3D image voxel data of a volume prior to deformation, the method maps the image pixels, to be synthesized, from the deformed configuration back to the nominal pre-deformed configuration, where the pixel intensities are obtained easily through interpolation in the regular-grid structure of the voxel volume. This mapping requires the identification of the mesh element enclosing each image pixel, in order to use its corresponding shape function for smooth interpolation. To accelerate this point location operation, a fast method of marking the projection of the deformed mesh on the image pixels at every frame is introduced. In order to evaluate our method, a deformable tissue phantom was constructed and its 3D ultrasound volume was acquired in its nominal state. B-mode images of the phantom were then synthesized under the simulated deformation of an ultrasound probe. Results show that realistic B-mode images can be simulated in real-time with the proposed technique, even under large deformations. The technique is also implemented on a real-time system for ultrasound exploration with deformation.Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE; 09/2007 -
Article: Real-time synthesis of image slices in deformed tissue from nominal volume images.
[show abstract] [hide abstract]
ABSTRACT: This paper presents a fast image synthesis procedure for elastic volumes under deformation. Given the node displacements of a mesh and the 3D image voxel data of an undeformed volume, the method maps the image plane pixels to be synthesized from the deformed configuration back to the nominal pre-deformed configuration, where the pixel intensities are obtained easily through interpolation in the regular-grid structure of the voxel volume. For smooth interpolation, this mapping requires the identification of the mesh element enclosing each image pixel. To accelerate this point location procedure, a fast method of marking the image pixels is employed by finding the intersection of the mesh and the image, and marking this intersection on the image pixels using Bresenham's line drawing algorithm. A deformable tissue phantom was constructed, it was modeled using the finite element method, and its 3D ultrasound volume was acquired in its undeformed state. Actual B-mode images of the phantom under deformation by the ultrasound probe were then compared with the corresponding synthesized images simulated for the same deformations. Results show that realistic images can be synthesized in real-time using the proposed technique.Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. 02/2007; 10(Pt 1):401-8.
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Keywords
3D ultrasound application domains
data demands specialized algorithms
generic processing techniques
relevant
techniques
three-dimensional
wide range