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This booklet is a revised edition of the NIOSH document
Histoplasmosis: Protecting Workers at Risk, which was originally
published in September 1997. The updated information in this
booklet will help readers understand what histoplasmosis is and
recognize activities that may expose workers to the disease-causing
fungus Histoplasma capsulatum. The booklet also informs readers
about methods they can use to protect themselves and others from
exposure.
The third edition of Dye Lasers has been prepared in response to
demand for an updated version of this well-known Topics volume. The
classic chapters on continuous-wave dye lasers and properties of
dye lasers are unchanged, but are now complemented by an additional
chapter on continuous-wave dye lasers that takes account of recent
advances. The chapters on principles of operation and mode-locking
of dye lasers have been updated. Finally, the chapter on
applications, which was originally written when a synopsis was
still possible, has been eliminated completely in this edition,
since nowadays dye lasers have penetrated almost all fields of
science and technology and applications have become innumerable. In
its place there is a new chapter on wavemeters. This book provides
an excellent introduction to dye lasers and contains much useful
information for scientists and engineers who deal with their
applications.
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.
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