There have been several significant advances innuclearmedicine since the publication of the
second edition of Practical NuclearMedicine. The last seven years have seen great strides in
instrumentation, including new coincidence detectors, the development of a wider variety
of crystals, and the advent of combined anatomical/functional imaging devices, including
PET/CT and SPECT/CT. PET imaging with 18F-FDG has become a mainstay of many
clinical settings, and other radiotracers are finding theirway into the rapidly expanding field
of oncologic PET.
This book collects chapters on different theoretical and experimental aspects of photonics crystals for Nanophotonics applications. It is divided in two parts - a theoretical section and an experimental and applicative section.
SPECT viết tắt của cụm từ Single Photon Emission Computed Tomography; Là một thiết bị ứng dụng kỹ thuật y học hạt nhân để chẩn đoán hình ảnh chức năng của các cơ quan trong cơ thể. Hình ảnh mà SPECT thu được không phải là hình thể giải phẫu mà là hình ảnh phản ánh chức năng của cơ quan.
Although a general understanding persists that the
human brain functions similarly in women and in men,
an increasing body of knowledge indicates that neuronal
connectivity, recruitment, and disease patterns exhibit
gender differences. Imaging techniques such as positron
emission computerized tomography (PET) and single
photon emission computerized tomography (SPECT)
have highlighted some gender-based differences in human
Congenital Anomalies of the Lumbar Spine
Spondylolysis is a bony defect in the pars interarticularis (a segment near the junction of the pedicle with the lamina) of the vertebra; the etiology may be a stress fracture in a congenitally abnormal segment. The defect (usually bilateral) is best visualized on oblique projections in plain x-rays, CT scan, or single photon emission CT (SPECT) bone scan and occurs in the setting of a single injury, repeated minor injuries, or growth.
Although dyspnea is a common symptom, there has been only limited investigation of
its prognostic significance among patients referred for cardiac evaluation.
We studied 17,991 patients undergoing myocardial-perfusion single-photon-emission
computed tomography during stress and at rest. Patients were divided into five categories
on the basis of symptoms at presentation (none, nonanginal chest pain, atypical angina,
typical angina, and dyspnea).
Photovoltaics have started replacing fossil fuels as major energy generation roadmaps, targeting higher efficiencies and/or lower costs are aggressively pursued to bring PV to cost parity with grid electricity. Third generation PV technologies may overcome the fundamental limitations of photon to electron conversion in single-junction devices and, thus, improve both their efficiency and cost. This book presents notable advances in these technologies, namely organic cells and nanostructures, dye-sensitized cells and multijunction III/V cells. ...
QDs play an important role mainly in the imaging and as highly fluorescent probes for
biological sensing that have better sensitivity, longer stability, good biocompatibility, and
minimum invasiveness. The fluorescent properties of QDs arise from the fact, that their
excitation states/band gaps are spatially confined, which results in physical and optical
properties intermediate between compounds and single molecules. Depending on chemical
composition and the size of the core which determines the quantum confinement, the
emission peak can vary from UV to NIR wavelengths (400–1350 nm).