This dissertation addresses the challenge of assessing the thickness and density of thin cortical bone.Due to the limited spatial resolution of Quantitative Computed Tomography (QCT) the Nyquist-Shannon sampling theorem is violated, making direct reconstruction impossible.To overcome this, a probabilistic Analysis by Synthesis (AbS) framework is proposed that exploits the geometry of the bone and the anisotropy of the CT point spread function.By modeling uncertainties through a bone and measurement model, the AbS optimization is framed as a maximum a posteriori problem, using a Monte Carlo...
This dissertation addresses the challenge of assessing the thickness and density of thin cortical bone.Due to the limited spatial resolution of Quanti...
This dissertation addresses the challenge of assessing the thickness and density of thin cortical bone.Due to the limited spatial resolution of Quantitative Computed Tomography (QCT) the Nyquist-Shannon sampling theorem is violated, making direct reconstruction impossible.To overcome this, a probabilistic Analysis by Synthesis (AbS) framework is proposed that exploits the geometry of the bone and the anisotropy of the CT point spread function.By modeling uncertainties through a bone and measurement model, the AbS optimization is framed as a maximum a posteriori problem, using a Monte Carlo...
This dissertation addresses the challenge of assessing the thickness and density of thin cortical bone.Due to the limited spatial resolution of Quanti...