Drawing on the history of post-independence Tunisia, the book studies the evolution of al-Nahdah as a political party in Tunisia and its role in a protracted struggle to shape the post-authoritarian order along democratic lines. It explores al-Nahdah's relationship with the Tunisian state, society and beyond that resulted in shaping its fluctuating expressions of ideology and practices. State repression, political participation, or internal differentiation (among other factors) place an Islamic movement (in this case al-Nahdah) in such a situation that demands a perpetual self re-evaluation as well as implementation of ideology, objectives, and political programmes. The study explains how the socio-political setting in Tunisia demanded various ideologically opposite currents (Islamic, liberal, or leftist) to endure cross-ideological cooperation either to contest authoritarian regimes or to engage in the political process. It more importantly analyzes the trajectory of a gradual democratization process in the country and provides evidence explaining the impact and importance of a vibrant civil society, building alliances, and sharing of power. The book provides comparative analytical attention to the primary sources on these issues to create a critical historiography. It thus adds to the body of literature on the state, society, and politics in the MENA region and particularly targets students, scholars, and social scientists interested in understanding the nature of power and politics in Tunisia and beyond.

This book discusses various dynamic facets of the life of Rashid al-Ghannushi , a distinguished Islamic thinker and activist not only in Tunisia and North Africa, but in the entire Muslim world. It especially focuses on those aspects related to his intellectual understanding and response to a number of critical contemporary issues. In the 21st Century, Rashid al-Ghannushi is considered as the most moderate among the Muslim thinkers and intellectuals, particularly when it comes to the question of Islam-democracy compatibility and power sharing theory. This book also offers an account of a previously little known, yet much talked about Muslim voice in the post-Arab Spring era. It further shows how the intellectual Muslim thinkers' own perspectives and expectations from Islamic movement(s) and their interaction with the 'western oriented local leadership', as well as their (secular) policies color their understanding of Islam and various other major issues.

Written by an interdisciplinary team of medical doctors, computer scientists, physicists, engineers, and mathematicians, Correction Techniques in Emission Tomography presents various correction methods used in emission tomography to generate and enhance images. It discusses the techniques from a computer science, mathematics, and physics viewpoint.

The book gives a comprehensive overview of correction techniques at different levels of the data processing workflow. It covers nuclear medicine imaging, hybrid emission tomography (PET-CT, SPECT-CT, PET-MRI, PET-ultrasound), and optical imaging (fluorescence molecular tomography). It illustrates basic principles as well as recent advances, such as model-based iterative algorithms and 4D methods. An important aspect of the book is on new and sophisticated motion correction techniques in PET imaging. These techniques enable high-resolution, high-quality images, leading to better imaging analysis and image-based diagnostics.

Reflecting state-of-the-art research, this volume explores the range of problems that occur in emission tomography. It looks at how the resulting images are affected and presents practical compensation methods to overcome the problems and improve the images.

Written by an interdisciplinary team of medical doctors, computer scientists, physicists, engineers, and mathematicians, Correction Techniques in Emission Tomography presents various correction methods used in emission tomography to generate and enhance images. It discusses the techniques from a computer science, mathematics, and physics viewpoint. The book gives a comprehensive overview of correction techniques at different levels of the data processing workflow. It covers nuclear medicine imaging, hybrid emission tomography (PET-CT, SPECT-CT, PET-MRI, PET-ultrasound), and optical imaging (fluorescence molecular tomography). It illustrates basic principles as well as recent advances, such as model-based iterative algorithms and 4D methods. An important aspect of the book is on new and sophisticated motion correction techniques in PET imaging. These techniques enable high-resolution, high-quality images, leading to better imaging analysis and image-based diagnostics. Reflecting state-of-the-art research, this volume explores the range of problems that occur in emission tomography. It looks at how the resulting images are affected and presents practical compensation methods to overcome the problems and improve the images.

Respiratory and cardiac motion leads to image degradation in Positron Emission Tomography (PET), which impairs quantification. In this book, the authors present approaches to motion estimation and motion correction in thoracic PET. The approaches for motion estimation are based on dual gating and mass-preserving image registration (VAMPIRE) and mass-preserving optical flow (MPOF). With mass-preservation, image intensity modulations caused by highly non-rigid cardiac motion are accounted for. Within the image registration framework different data terms, different variants of regularization and parametric and non-parametric motion models are examined. Within the optical flow framework, different data terms and further non-quadratic penalization are also discussed. The approaches for motion correction particularly focus on pipelines in dual gated PET. A quantitative evaluation of the proposed approaches is performed on software phantom data with accompanied ground-truth motion information. Further, clinical applicability is shown on patient data. The book concludes with an outlook of recent developments and potential future advances in the field of PET motion correction.