Recent Advances in Imaging

Recent Advances in Imaging

Medical Imaging Technologies and Methods for Health Care

Medical Imaging Technologies and Methods for Health Care provides timely, evidence-based information that helps readers understand innovations in medical imaging. These innovations are computer / ...
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Use of Biomechanical Engineering Method in Image Registration of Breast

Pp. 35-44 (10)

Fuk-hay Tang

Abstract

Background: The image registration using positron emission tomography (PET) and magnetic resonance imaging (MRI) has been studied extensively. The purpose of this project is to propose a patient-specific image registration model that can improve both the accuracy and efficiency of the registration process. Large-scale deformation of the breast makes image registration of the breast a challenging task. Usually, a patient undergoes MRI in the prone position and PET in the supine position. Registration of breast in supine position with breast in prone position is a challenge. Methods: Eight cases with corresponding pairs of PET/computed tomography (CT) and MRI breast images were used in this study for the performance of PET/MRI registration. Registration was based on a biomechanical finite element model that could simulate large-scale deformation of the breast under pressure. Results: In this study, an accurate patient-specific registration model was built with a target registration error (TRE) of 4.77±2.20 mm. Conclusion: Image deformation due to the effect of gravity was successfully modeled by the finite element method.

Keywords:

Finite Element Analysis, Breast Modeling, PET and MR Registration.

Affiliation:

School of Dentistry and Health Science, Charles Sturt University, Bathurst, New South Wales, Australia.