Preface. Part 1: Cone-Beam and New Geometries Reconstruction. Comparison of Three 3D Reconstruction Methods from Cone-Beam Data; C. Axelsson-Jacobson, et al. Filtered Backprojection Algorithms for Attenuated Parallel and Cone-Beam Projections Sampled on a Sphere; Y. Weng, et al. A Theorem on Divergent Projections; P.R. Edholm, P.-E. Danielsson. An Adaptative and Constrained Model for 3D X-Ray Vascular Reconstruction; E. Payot, et al. Cone-Beam Algebraic Reconstruction Using Edge-Preserving Regularization; I. Laurette, et al. Eigen Analysis of Cone-Beam Scanning Geometries; G.L. Zeng, et al. Efficient Sampling in 3D Tomography: Parallel Schemes; L. Desbat. Part 2: SPECT Quantitation. Analytical Approaches for Image Reconstruction in 3D SPECT; X. Pan, C.E. Metz. Quantitative Brain SPECT in Three Dimensions: An Analytical Approach Without Transmission Scans; Z. Liang, et al. An Analytical Approach of Compensation for Non-Uniform Attenuation and 3D Detector Response in Cardiac SPECT Imaging; S.J. Glick, et al. Characteristics of Reconstructed Point Response in Three-Dimensional Spatially Variant Detector Response Compensation in SPECT; B.M.W. Tsui, et al. Evaluation of Fully 3D Iterative Scatter Compensation and Post-Reconstruction Filtering in SPECT; F.J. Beekman, M.A. Viergever. An Investigation of Two Approximation Methods for Improving the Speed of 3D Iterative Reconstruction-Based Scatter Compensation; E. Frey, et al. Part 3: Patient Motion and Gated SPECT. Evaluation of a 3D OS-EM Reconstruction Algorithm for Correction of Patient Motion in Emission Tomography; R.R. Fulton, et al. Space-Time Gibbs Priors Applied to Gated SPECT Myocardial Perfusion Studies; D.S. Lalush, B.M.W. Tsui. Reconstruction of Gated SPECT Myocardial Images Using a Temporal Evolution Model; J. de Murcia, P. Grangeat. Part 4: PET Quantitation and Reconstruction. Design and Performance of 3D Single Photon Transmission Measurement on a Positron Tomograph with Continuously Rotating Detectors; R.A. Dekemp, et al. A Single Scatter Simulation Technique for Scatter Correction in 3D PET; C.C. Watson, et al. The Effect of Energy Threshold on Image Variance in Fully 3D PET; J.M. Ollinger. FIPI: Fast 3-D PET Reconstruction by Fourier Inversion of Rebinned Plane Integrals; C. Wu, et al. Performance of a Fast Maximum Likelihood Algorithm for Fully 3D PET Reconstruction; S. Matej, J.A. Browne. Author Index.