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21 May 1999 Tomographic reconstruction using free-form deformation models
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We address the issue of using deformable models to reconstruct the shape of unknown objects in the context of 3D tomography. We focus on the reconstruction of piecewise- uniform radioactive distributions such as in blood pool or lung imaging. We represent the unknown distribution by a set of closed surfaces defining uniformly emitting regions in space. The methods implemented so far tend to directly deform the surfaces. Rather than deforming the surface models themselves, we explore the deformation of the space in which the surfaces are contained to match a set of scintigraphic measurements. We focus on the use of free-form deformations to describe the continuous transformation of space. We illustrate this approach by reconstructing simulated scintigraphic data of the lungs.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xavier L. Battle, Yves J. Bizais, Catherine Le Rest, and A. Turzo "Tomographic reconstruction using free-form deformation models", Proc. SPIE 3661, Medical Imaging 1999: Image Processing, (21 May 1999);

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