Validation of Non-rigid Registration Using Finite Element Methods
IPMI '01 Proceedings of the 17th International Conference on Information Processing in Medical Imaging
Needle Insertion Modelling for the Interactive Simulation of Percutaneous Procedures
MICCAI '02 Proceedings of the 5th International Conference on Medical Image Computing and Computer-Assisted Intervention-Part II
MICCAI '01 Proceedings of the 4th International Conference on Medical Image Computing and Computer-Assisted Intervention
Haptics in computer-mediated simulation: training in vertebroplasty surgery
Simulation and Gaming - Symposium: virtual reality simulation
MICCAI'11 Proceedings of the 14th international conference on Medical image computing and computer-assisted intervention - Volume Part I
X-Ray mammogram registration: a novel validation method
IWDM'06 Proceedings of the 8th international conference on Digital Mammography
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Currently, High Field (1.5T) Superconducting MR image-guided needle breast procedures allow the physician only to calculate approximately the location and extent of a cancerous tumor in the compressed patient breast before inserting the needle. It can then become relatively uncertain that the tissue specimen removed during the biopsy actually belongs to the lesion of interest. A new method for guiding clinical breast biopsy is presented, based on a deformable finite element model of the breast. The geometry of the model is constructed from MR data, and its mechanical properties are modeled using a non-linear material model. This method allows imaging the breast without compression before the procedure, then compressing the breast and using the finite element model to predict the tumor's position during the procedure. A patient's breast was imaged in a 1.5T magnet, first uncompressed, then fewer than two different plate compression amounts (12% and 26%). A deformable model of that breast was constructed. The model was deformed using virtual compression plates, and the displacements of a cyst, and of two vitamin E pills attached to the surface of the breast were recorded both in the real breast and in the deformable model. All of the simulations were done using custom-written software, and took less that a half-hour to complete. The results suggest that it is possible to create a deformable model of the breast based on the use of finite elements with non-linear material properties capable of modeling and predicting the deformation of the breast.